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1.
BrJP ; 6(3): 251-256, July-sept. 2023. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1520293

ABSTRACT

ABSTRACT BACKGROUND AND OBJECTIVES: Bruxism is defined as an activity of the masticatory muscles, which is independent of the teeth presence, so it can occur in total edentulous patients and users of dental prostheses. In this sense, It is therefore necessary to know the clinical manifestations of bruxism in this population. The objective of this study was to evaluate the clinical manifestation and the presence of probable sleep and awake bruxism in a sample of users of full dentures treated at a teaching dental clinic in the city of Ribeirão Preto/SP. METHODS: The adopted sample consisted of 30 patients (mean age 72 years, 18 women/12 men). The following questionnaires were used to assess probable bruxism: Oral Behavior Checklist (OBC), Questionnaire of the American Academy of Orofacial Pain (AADO) and the Depression Anxiety and Stress Scale (DASS-21). The clinical assessment included the identification of wear on the prostheses, tongue indentations, bitten cheek and sensitivity in the masticatory muscles and temporomandibular joints. The data was analyzed using descriptive statistics. RESULTS: The average of use of the dentures were nine years. Six patients (20%) reported self-perceived sleep bruxism, and 11 (36%) reported self-perceived awake bruxism. OBC showed an average total score of 9.8 ± 6.2, with "teeth clenching" being the most described symptom. DASS-21 presented an average of 16.5, and stress, anxiety and depression were within normal limits. The most commonly reported symptoms in the AADO were headache, neck pain, pain and/or difficulty during jaw function and recent trauma to the head, neck or jaws. In the clinical evaluation, 15 (50%) patients had wear on prosthesis, only 2 (6%) had bitten cheek, none had tongue indentations, 4 (13%) had pain during palpation. CONCLUSION: Despite the limitations of the study (cross-sectional, small sample and absence of instrumental evaluation of bruxism), it is possible to conclude that a significant portion of users of total dentures presented probable bruxism, with tooth clenching being the main report and wear on the prosthesis the main clinical manifestation.


RESUMO JUSTIFICATIVA E OBJETIVOS: O bruxismo é definido como uma atividade da musculatura mastigatória, que independe da presença de dentes, portanto pode ocorrer em pacientes desdentados totais e usuários de próteses dentárias. Assim, é preciso conhecer como o bruxismo se manifesta clinicamente nessa população. O objetivo deste estudo foi investigar a presença do provável bruxismo de sono e de vigília em usuários de prótese total atendidos em uma clínica odontológica de ensino em Ribeirão Preto/SP. MÉTODOS: Uma amostra de conveniência foi composta por 30 pacientes (média de 72 anos, 18 mulheres e 12 homens). Os seguintes questionários foram utilizados para avaliar o provável bruxismo: Oral Behavior Checklist (OBC), Questionário da Academia Americana de Dor Orofacial (AADO) e o Depression Anxiety and Stress Scale (DASS-21). A avaliação clínica incluiu a identificação de desgastes nas próteses, língua dentada, bochecha mordiscada e sensibilidade nos músculos mastigatórios e nas articulações temporomandibulares. Os dados foram analisados por meio de estatística descritiva. RESULTADOS: A média de uso das próteses foi de nove anos. Seis indivíduos (20%) relataram bruxismo do sono e 11 (36%) relataram bruxismo de vigília. O OBC apresentou média de escore total de 9,8 ± 6,2, sendo "apertar de dentes" o sintoma mais descrito. O DASS-21 apresentou média total de 16,5, com valores de estresse, ansiedade e depressão dentro da normalidade. Os sintomas mais relatados no AADO foram cefaleia, dores no pescoço, dor e/ou dificuldade durante a função mandibular e trauma recente na cabeça, pescoço ou maxilares. Na avaliação clínica, 15 (50%) dos pacientes apresentaram desgastes na prótese, 4 (13%) dor por palpação, 2 (6%) bochecha mordiscada e nenhum (0%) língua dentada. CONCLUSÃO: Apesar das limitações deste estudo (corte transversal, amostra reduzida e ausência de avaliação instrumental do bruxismo) foi possível concluir que uma parcela significativa de usuários de próteses totais apresentou provável bruxismo, sendo o apertamento dentário o principal relato e desgastes na prótese a principal manifestação clínica.

2.
Geriatr., Gerontol. Aging (Online) ; 17: 1-4, 2023. ilus, tab
Article in English | LILACS | ID: biblio-1428360

ABSTRACT

BACKGROUND AND OBJECTIVE: Parkinson's disease is a neurological disorder that affects 1% of individuals aged 60 years and older. The associated symptoms can impose limitations on the available dental treatment options. CASE DESCRIPTION: This case report follows the CARE guidelines and presents an adapted and simplified technique to fabricate complete dentures for a 74-year-old male edentulous patient with Parkinson's disease. This modified technique enabled the fabrication of complete dentures in 4 clinical sessions of approximately 40 minutes. The first session involved manufacturing a preliminary impression with fast-setting alginate. The base plates and occlusal rims were then adjusted for artificial teeth arrangement during the second session. The final prosthesis was completed in the third session, which involved a teeth try-in and fabrication of a functional impression with low-melting thermoplastic material and polyether. Finally, denture installation was performed in the fourth session and follow-up consisted of 3 weekly sessions. DISCUSSION: Considering that the treatment provided satisfactory aesthetics and function, mastication and socialization benefits, and improved the self-esteem and well-being of the older patient with Parkinson's disease, the authors suggest this adapted and simplified technique for fabricating complete dentures. (AU)


JUSTIFICATIVA E OBJETIVO: A doença de Parkinson é uma desordem neurológica que afeta 1% dos indivíduos com 60 anos ou mais. Os sintomas associados podem impor limitações nas opções de tratamento odontológico disponíveis. DESCRIÇÃO DO CASO: Este relato de caso segue o protocolo CARE e apresenta uma adaptação da técnica simplificada para confecção de novas próteses totais, para um paciente edêntulo, do sexo masculino, de 74 anos com doença de Parkinson. Essa técnica modificada possibilita a confecção de próteses totais em quatro sessões clínicas de aproximadamente 40 minutos. A primeira sessão envolveu uma moldagem preliminar com alginato de presa rápida. As placas articulares com rodetes de cera foram ajustadas para montagem dos dentes artificiais durante a segunda sessão. A prótese definitiva foi concluída na terceira sessão, que envolveu a prova dos dentes e moldagem funcional com material termoplástico de baixa fusão e poliéter. Por fim, a instalação da prótese foi realizada na quarta sessão e o acompanhamento consistiu em três sessões semanais. DISCUSSÃO: Considerando que o tratamento proporcionou estética e função satisfatórias, benefícios mastigatórios e de socialização, melhora da autoestima e bem-estar do idoso com doença de Parkinson, os autores sugerem o uso da adaptação da técnica simplificada para confecção de prótese total. (AU)


Subject(s)
Humans , Male , Aged , Parkinson Disease , Denture Design/methods , Mouth, Edentulous/rehabilitation
3.
Braz. dent. sci ; 26(4): 1-7, 2023. ilus
Article in English | LILACS, BBO | ID: biblio-1523154

ABSTRACT

Objective: The study aimed to develop a cell phone application entitled: "Total Prosthesis Manual ­ Rehabilitating smiles", as an auxiliary teaching tool for teachers and students through digital technology, with a smartphone. Material and Methods: The tool was structured on the "Application Factory website", which allows the creation of mobile applications in different formats, with broad and interactive features on IOS and Android platforms. The expository format of the content is in slide format, containing descriptive theory and images about the stages of making a complete prosthesis; from necessary materials, photos and descriptive guidance of the steps. Results: The application is a complementary teaching resource to assist undergraduate and postgraduate students and professionals working in the area of complete prosthetics. The theoretical and practical content selected for the application covered all stages of understanding, development and possible complications associated with the manufacture of a complete bimaxillary prosthesis, from planning, impressions, models, orientation plans, tooth assembly, adaptations and delivery. Conclusion: The application provided a low-cost, expandable and easy-to-use teaching resource for teaching complete dentures. It is essential to develop various analyzes such as user experience tests, application effectiveness, development of new technologies and improvement of techniques, so that their potential for enriching learning in complete dentures and dentistry in general can be verified.(AU)


Objetivo: O estudo teve como objetivo desenvolver um aplicativo de celular intitulado: "Manual de Prótese Total ­ Reabilitando sorrisos", como uma ferramenta didática auxiliar para professores e alunos por meio da tecnologia digital, com smartphone. Material e Métodos: A ferramenta foi estruturada no "site da Fábrica de Aplicativos", que permite a criação de aplicativos móveis em diversos formatos, com recursos amplos e interativos nas plataformas IOS e Android. A modalidade expositiva do conteúdo é em formato de slides, contendo teoria descritiva e imagens sobre as etapas de confecção de uma prótese total; a partir de materiais necessários, fotos e orientação descritiva das etapas. Resultados: O aplicativo é um recurso didático complementar para auxiliar estudantes de graduação, pós-graduação e profissionais que atuam na área de prótese total. O conteúdo teórico e prático selecionado para a aplicação visou todas as etapas de compreensão, desenvolvimento e possíveis complicações associadas à confecção de uma prótese total bimaxilar, desde o planejamento, moldagens, maquetes, planos de orientação, montagem dos dentes, adaptações e entrega. Conclusão: O aplicativo trouxe um recurso didático de baixo custo, expansível e fácil de usar para o ensino de próteses totais. É fundamental desenvolver diversas análises como testes de experiência do usuário, eficácia de aplicação, desenvolvimento de novas tecnologias e aprimoramento de técnicas, de forma que possa ser verificado seu potencial de enriquecimento do aprendizado em prótese total e odontologia em geral(AU)


Subject(s)
Humans , Educational Technology , Denture, Complete , Education, Dental , Mobile Applications , Education, Distance , Dentists/education
4.
RGO (Porto Alegre) ; 71: e20230007, 2023. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1431164

ABSTRACT

ABSTRACT Objective: To evaluate the dimensional change of edentulous models made of high density laboratory silicones at different storagetimes. Methods: A metallic master model simulating an edentulous maxilla was used. The model had projections of 1.8 cm located in the regions of canines (A and B) and molars (C and D) allowing the linear measurement of distances AB, BC, CD, DA, AC and BD. A laboratory silicone mold was made for duplication of master model in the following materials (n = 10): G1: Zetalabor 85, G2: Titanium 95, G3: Platinum 95 and G4: Gypsum type III (control). The samples were photographed and measured using a software (Image J) at times T1 (baseline) and T2 (after one week of models fabrication). The data were statistically analyzed using Kruskal- Wallis and Dun non-parametric tests (α = 0.05). Results: The storage time influenced the behavior of the materials evaluated. All groups presented dimensional changes in both times and the group Tit95 presented the best results. Only Zet85 group showed a different behavior related to the region of the model. Conclusions: The high density laboratory silicones showed satisfactory results when compared to the gypsum group. Tit95 was the most stable material and it can be recommended as an edentulous model for total protheses.


RESUMO Objetivo: Avaliar a alteração dimensional de modelos edêntulos fabricados em silicone laboratorial de alta densidade em diferentes tempos de armazenagem. Métodos: Um modelo mestre metálico simulando uma maxila edêntula foi utilizado. O modelo possuía projeções oclusais de 1,8 cm localizadas nas regiões de caninos (A e B) e molares (C e D), permitindo a mensuração das distâncias lineares AB, BC, CD, DA, AC e BD. Um molde foi fabricado em silicone laboratorial para duplicação do modelo mestre com os seguintes materiais (n = 10): G1: Zetalabor 85, G2: Titanium 95, G3: Platinum 95 e G4: Gesso tipo III (controle). As amostras foram fotografadas e mensuradas com auxílio de um software (Image J) nos tempos T1 (baseline) e T2 (após uma semana de confecção). Os dados obtidos foram avaliados estatisticamente utilizando os testes não paramétricos de Kruskal- Wallis e Dunn (α = 0.05). Resultados: O tempo de armazenagem influenciou o comportamento dos materiais avaliados. Todos os grupos apresentaram alterações dimensionais em ambos os temos de avaliação e o G2 apresentou os melhores resultados. Apenas o grupo G1 mostrou alteração dimensional dependente da região mensurada. Conclusão: Silicones laboratoriais de alta densidade mostraram resultados satisfatórias de alteração dimensional quando comparados ao gesso tipo III. O material Titanium 95foi o mais estável e pode ser recomendado como alternativa para a confecção de modelos edêntulos.

5.
J. oral res. (Impresa) ; 11(6): 1-10, nov. 3, 2022. ilus, tab
Article in English | LILACS | ID: biblio-1437657

ABSTRACT

Aim: To assess the effect of different mechanical surface treatments on flexural strength of repaired denture base. Material and Methods: Sixty bar-shaped specimens of heat-polymerized acrylic resin were fabricated, and divided into six groups (n=10). All specimens, except the positive control group (group PC), were sectioned into halves to create a 1-mm clearance. A negative control group with no surface treatment (group NC) was also considered. Other groups underwent different surface treatments: group Laser; treated with erbium: yttrium-aluminum-garnet (Er:YAG) laser, group APA; airborne-particle abrasion (APA), group APA plus Laser; a combination of laser and APA, and group Bur; bur grinding. After measuring surface roughness (Ra) with a profilometer, all sectioned specimens were repaired by auto-polymerizing acrylic resin, and thermocycled afterward. Three-point bending test was performed by a universal testing machine. Data were statistically analyzed (α=0.05). Results: The mean surface roughness of all experimental groups were significantly higher than that of group NC (p<0.05). The mean flexural strength of all groups was significantly lower than that of group PC (p<0.05). Group B had significantly higher flexural strength than the other surface-treated groups (p<0.05). Group Laser had significantly higher flexural strength than groups APA (p=0.043) and APA plus Laser (p=0.023). No significant difference was found between groups APA and APA plus Laser (p=0.684). Conclusion: All surface treatments increased the surface roughness and flexural strength compared with the untreated group. The highest flexural strength was observed in specimens treated by bur grinding and then laser, however, it was still significantly lower than intact specimens.


Objetivo: Evaluar el efecto de diferentes tratamientos superficiales mecánicos sobre la resistencia a la flexión de la base de la prótesis reparada. Material y Métodos: Se fabricaron sesenta especímenes en forma de barra de resina acrílica termo-polimerizada y se dividieron en seis grupos (n=10). Todas las muestras, excepto el grupo de control positivo (grupo PC), se seccionaron en mitades para crear un espacio libre de 1 mm. También se consideró un grupo de control negativo sin tratamiento superficial (grupo NC). Otros grupos se sometieron a diferentes tratamientos superficiales: grupo Láser; tratados con láser de erbio: itrio-aluminio-granate (Er:YAG), grupo APA; abrasión por partículas en el aire (APA), grupo APA más láser; una combinación de láser y APA, y grupo Bur; molienda de fresas. Después de medir la rugosidad de la superficie (Ra) con un perfilómetro, todas las muestras seccionadas se repararon con resina acrílica de autopolimerización y se sometieron a termociclado. La prueba de flexión de tres puntos se realizó con una máquina de prueba universal. Los datos se analizaron estadísticamente (α=0,05). Resultados: La rugosidad superficial media de todos los grupos experimentales fue significativamente mayor que la del grupo NC (p<0,05). La resistencia media a la flexión de todos los grupos fue significativamente menor que la del grupo PC (p<0,05). El grupo B tenía una resistencia a la flexión significativamente mayor que los otros grupos tratados en la superficie (p<0,05). El grupo Láser tuvo una resistencia a la flexión significativamente mayor que los grupos APA (p=0,043) y APA más Láser (p=0,023). No se encontró diferencia significativa entre los grupos APA y APA más Láser (p=0,684). Conclusión: Todos los tratamientos superficiales aumentan la rugosidad de la superficie y la resistencia a la flexión en comparación con el grupo sin tratar. La resistencia a la flexión más alta se observó en las muestras tratadas con fresado y luego con láser; sin embargo, aún era significativamente más baja que las muestras intactas.


Subject(s)
Humans , Acrylic Resins/chemistry , Denture Repair , Polymethyl Methacrylate/chemistry , Dental Materials/chemistry , Denture Bases , Lasers, Solid-State , Methacrylates/chemistry
6.
Natal; s.n; 9 nov 2022. 158 p. tab, ilus, graf.
Thesis in Portuguese | LILACS, BBO | ID: biblio-1532385

ABSTRACT

Este estudo objetivou identificar os fatores que influenciam na decisão de substituir uma prótese total convencional mandibular pelo tratamento com implantes dentários, assim como avaliar a satisfação, qualidade de vida e performance mastigatória (PM) após reabilitação com sobredentaduras com implante único (SIU) em pacientes adaptados e não-adaptados a prótese total convencional (PT) mandibular. Inicialmente, foi realizado um estudo transversal com 117 usuários de PTs bimaxilares, avaliados quanto aos desfechos relacionados à prótese (número de PTs mandibulares usadas previamente, tempo de uso e profissional que confeccionou a prótese atual, e quanto ao uso regular ou não da prótese mandibular) e aspectos centrados no paciente (período de edentulismo mandibular, altura óssea mandibular e interesse do paciente em se submeter a terapia com implantes). Do total da amostra, 78 pacientes manifestaram interesse na terapia implantossuportada, e desses apenas 22 foram selecionados e reabilitados com novas PTs bimaxilares. Após critérios de elegibilidade, foram alocados após pareamento em 2 grupos: adaptados à prótese mandibular (Grupo PTA - "adaptados à PT mandibular", n:10) e não adaptados (Grupo PTN - "não adaptados à PT mandibular", n:12). Em cada paciente, foi instalado um único implante na linha média e após o período de osseointegração as próteses mandibulares foram convertidas em sobredentaduras. O desempenho mastigatório foi avaliado pelo método das tamises, a altura óssea mandibular por medição em radiografia panorâmica, satisfação por escala quantitativa com questionário validado e o impacto da saúde oral na qualidade de vida pelo questionário OHIP-Edent-19. O teste Qui-quadrado foi utilizado para análise dos dados e as razões de prevalência ajustadas por meio da regressão multivariada de Poisson no primeiro estudo; para o segundo, a análise estatística em cada grupo e entre grupos foi baseada nos testes não-paramétricos de Wilcoxon e Mann-Whitney. O intervalo de confiança para os testes foi de 95%. A amostra foi predominantemente do sexo feminino, com 66,7% (n=78) dos participantes interessados em PT mandibular implantossuportada e com idade média de 65,68±6,38 anos. A PM não influenciou a escolha pela reabilitação com implantes. A preferência pela PT implantossuportada mandibular foi associada significativamente com maior experiência prévia com PT mandibular (p=0,021) e à insatisfação quanto à retenção (p=0,005). Após a intervenção com implante, todos os pacientes não adaptados passaram a condição de adaptados. Não houve diferença entre PTA e PTN para OHIP-Edent (p=0,276) e PM (p=0,222), a satisfação foi significativa apenas para o critério "conforto em arco inferior" (p=0,043). Para comparações pré e pós-tratamento com sobredentadura, a mediana do OHIP-Edent total diminuiu significativamente em ambos os grupos. Na comparação intragrupo, essa redução foi significativa em PTA apenas para a "limitação funcional" (p=0,026), e em PTN em quase todos os domínios, exceto "disfunção social" e "incapacidade" (p>0,05). Houve aumento estatisticamente significativo para a satisfação geral de 75,41 para 90,25 (p=0,012) em PTN e de 76,10 para 90,50 (p=0,007) em PTA. Os parâmetros "mastigação", "adaptação", "retenção" e "conforto" em arco inferior foram diferentes com significância em ambos os grupos, e "gustação", "fonação" e "dor" em arco inferior foram significativos apenas para o grupo não adaptado (p<0,05). Houve diferença significativa para PM em PTN (p=0,002) e PTA (p=0,047) ao se comparar tipo de reabilitação. Não houve correlação entre PM e OHIP antes e após a reabilitação (p>0,05). Pode-se concluir que a experiência prévia com PT mandibulares convencionais e a insatisfação com a retenção dessas, influenciam o interesse pela reabilitação com sobredentadura implantossuportada mandibular, assim como, a reabilitação com sobredentadura sobre implante único apresenta-se como alternativa aos pacientes não adaptados a PT convencional mandibular, auxiliando na aceitação do uso da prótese mandibular, assim como, comprovando efeito positivo na satisfação, qualidade de vida e performance mastigatória (AU).


This study aimed to identify the factors that influence the decision to replace a conventional mandibular complete denture by treatment with dental implants, as well as to evaluate satisfaction, quality of life and masticatory performance (MP) after rehabilitation with overdentures with a single implant in patients adapted and not adapted to conventional mandibular complete denture (CD). Initially, a cross-sectional study was carried out with 117 users of bimaxillaries CDs, who were evaluated for outcomes related to the denture (number of previous mandibular CDs, time of use and professional who made the current denture, and regarding regular use of the mandibular denture) and aspects centered patients (period of mandibular edentulism, mandibular bone height and the patient's willingness to undergo implant therapy). From the total sample, 78 patients expressed interest in implant-supported therapy, and of these, only 22 were selected and rehabilitated with new bimaxillary CDs. After eligibility criteria, they were allocated after pairing into 2 groups: adapted to mandibular prosthesis (PTA Group - "adapted to mandibular CD", n:10) and non-adapted (PTN Group - " not adapted to mandibular CD", n:12). In each patient, a single implant was installed in the midline and after the osseointegration period, the mandibular prostheses were converted into overdentures. Masticatory performance was evaluated by the sieve method, mandibular bone height by paranoid radiographic measurement, satisfaction by quantitative scale with a validated questionnaire and the impact of oral health on quality of life by the OHIP-Edent-19 questionnaire. The chi-square test was used for data analysis and the prevalence ratios adjusted by means of multivariate Poisson regression in the first study; on the second, the statistical analysis in each group and between groups was based on the non-parametric-Wilcoxon and Mann-Whitney tests. The confidence interval for the tests was 95%. The sample was composed predominantly by women, with 66.7% (n=78) of the participants interested in implantsupported mandibular CD, with mean age 65.68±6.38 years. MP was not influenced by the choice by dental implants rehabilitation. Preference for mandibular implant-supported CD was significantly associated with longer previous experience in mandibular CD (p=0.021) and with dissatisfaction regarding retention (p=0.005). After the implant intervention, all non-adapted patients became adapted. There was no difference between PTA and PTN for OHIP-Edent (p=0.276) and MP (p=0.222), satisfaction was significant only for the criteria "comfort in the lower arch" (p=0.043). For pre- and post-treatment comparisons with overdentures, the median total OHIP-Edent decreased significantly in both groups. In the intragroup comparison, this reduction was significant in PTA only for "functional limitation" (p=0.026), and in PTN in almost all domains, except "social dysfunction" and "disability" (p>0.05). There was a statistically significant increase in overall satisfaction from 75.41 to 90.25 (p=0.012) in PTN and from 76.10 to 90.50 (p=0.007) in PTA. The parameters "chewing", "adaptation", "retention" and "comfort" in the lower arch were significantly different in both groups, and "gustation", "phonation" and "pain" in the lower arch were significant only for the group not adapted (p<0.05). There was a significant difference for MP in PTN (p=0.002) and PTA (p=0.047) when comparing the type of rehabilitation. There was no correlation between MP and OHIP before and after rehabilitation (p>0.05). It can be concluded that the previous experience with conventional mandibular CD and the dissatisfaction with the retention of these, influence the rehabilitation with mandibular implant-supported overdenture, as well as the rehabilitation with overdenture on single implant presents itself as an alternative for patients not adapted to mandibular conventional CD, helping to accept the use of mandibular prosthesis, as well as proving a positive effect on satisfaction, quality of life and masticatory performance (AU).


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Quality of Life , Denture, Complete , Mastication , Mouth Rehabilitation , Cross-Sectional Studies/methods , Patient Satisfaction , Statistics, Nonparametric , Mandibular Prosthesis Implantation , Dental Implantation , Immediate Dental Implant Loading
7.
J. oral res. (Impresa) ; 11(4): 1-10, jul. 21, 2022. ilus, tab
Article in English | LILACS | ID: biblio-1427082

ABSTRACT

Aim: This study aimed to evaluate the correlation between vertical dimension of occlusion (VDO) and various facial measurements in a sample of Sudanese adults. Material and Methods: A total of 113 dental students (33 males and 80 females) with a mean age of 21.7±1.26 years were enrolled in this study. Different facial measurements including (Eye-Mouth, Eye-Eye, Eye-Ear, and Ear Height) were compared with two different measurements of VDO: N-Gn (from the tip of the nose to the tip of the chin), and Sn-Me (from the base of the nose to the bottom of the chin). Pearson's correlation coefficient test was utilized for the correlation between the measured parameters. A p-value of less than 0.05 was considered significant for all analyses. Results: A significant positive correlation was shown between all measured facial distances and both measured VDO distances. Though, the strongest correlation was seen for the eye-mouth distance (r= 0.725, p<0.001), while the weakest was for ear height (r= 0.254, p= 0.007). A paired t-test revealed a significant longer N-Gn distance than Sn-Me distance. Also, it has been shown that there were no significant differences between right and left sides of the face. Conclusion: The distance measured from the outer canthus of the eye to the angle of the mouth can be used to predict Subnasale-Menton (Sn-Me) distance.


Objetivo: Este estudio tuvo como objetivo evaluar la correlación entre dimensión vertical oclusal (DVO) y varias medidas faciales en una muestra de adultos sudaneses. Material y Métodos: Un total de 113 estudiantes de odontología (33 hombres y 80 mujeres) con una edad media de 21,7 ± 1,26 años se inscribieron en este estudio. Se compararon diferentes medidas faciales que incluyen (ojo- boca, ojo-ojo, ojo-oído y altura de la oreja) con dos medidas diferentes de DVO: N-Gn (desde la punta de la nariz hasta la punta del mentón) y Sn -Yo (desde la base de la nariz hasta la parte inferior del mentón). Se utilizó la prueba del coeficiente de correlación de Pearson para la correlación entre los parámetros medidos. Un valor de p inferior a 0,05 se consideró significativo para todos los análisis. Resultados: Se mostró una correlación positiva significativa entre todas las distancias faciales medidas y ambas distancias DVO medidas. Sin embargo, la correlación más fuerte se observó para la distancia ojo-boca (r=0,725, p<0,001), mientras que la más débil fue para la altura de las orejas (r=0,254, p=0,007). Una prueba de t pareada reveló una distancia N-Gn significativamente más larga que la distancia subnasal-mentón. Además, se ha demostrado que no hubo diferencias significativas entre los lados derecho e izquierdo de la cara. Conclusión: La distancia medida desde el canto externo del ojo hasta el ángulo de la boca puede utilizarse para predecir la distancia subnasal-mentón.


Subject(s)
Humans , Male , Female , Vertical Dimension , Face/anatomy & histology , Prosthodontics , Sudan/epidemiology , Anthropometry , Nose/anatomy & histology , Chin/anatomy & histology , Dental Occlusion , Eye/anatomy & histology , Maxillofacial Development , Mouth/anatomy & histology
8.
Medisan ; 26(2)abr. 2022. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1405787

ABSTRACT

Introducción: La prótesis dental completa genera una reacción tisular en el medio bucal, cuyo diagnóstico puede ser confirmado mediante el estudio citológico, que constituye una herramienta imprescindible para identificar cambios displásicos tempranos de la mucosa subprótesis. Objetivo: Identificar las posibles variaciones celulares de la mucosa bucal en pacientes portadores de prótesis completa. Métodos: Se realizó un estudio descriptivo y transversal en la Clínica Estomatológica Provincial Docente Mártires del Moncada de Santiago de Cuba, de junio de 2014 a enero de 2019, de 100 pacientes atendidos en la consulta de Prótesis Estomatológica, a los cuales se les realizó el raspado citológico de la mucosa del paladar y los rebordes para su posterior análisis microscópico según variables de interés. Para el procesamiento estadístico se empleó el porcentaje como medida de resumen y el estadígrafo de la Χ2, con un nivel de significación de 0,05. Resultados: En la serie predominaron las displasias leves (66,7 %), que resultaron más frecuentes en las edades de 20 a 39 años (12,5 %), en tanto, las moderadas y las graves figuraron principalmente en el grupo etario de 60 y más años (9,3 y 27,7 %, respectivamente). Todos los tipos de displasia primaron en los pacientes que habían portado la prótesis por más de 5 años y afectaron mayormente la queratina; de igual modo, entre las lesiones observadas, la estomatitis afectaba a un mayor porcentaje (31,2), sobre todo en el paladar (82,3 %), mientras que 8,3 % correspondió a la leucoplasia. Conclusión: Las pruebas citológicas son imprescindibles para la confirmación diagnóstica de cambios displásicos y posibilitan la prevención temprana del cáncer bucal.


Introduction: The complete dental prosthesis generates a tisular reaction in the oral cavity which diagnosis can be confirmed by means of citological study that constitutes an indispensable tool to identify early dysplastic changes of the subprosthesis mucous. Objective: To identify the oral possible cellular variations of the oral mucous in patients with complete prosthesis. Methods: A descriptive and cross sectional study was carried out in Mártires del Moncada Provincial Stomatological Clinic of Santiago de Cuba, from June, 2014 to January, 2019, with 100 patients, assisted in the Stomatological Prosthesis Department to whom the cytological scrapings of the palate and the edges were carried out for their later microscopic analysis according to variables of interest. For the statistical procedures, the percentage was used as summary measure and the Chi squared statistician, with a significance level of 0,05. Results: In the series the mild dysplasias prevailed (66,7%) that were more frequent in the 20 to 39 age group (12,5%), while the moderate and the serious dysplasias figured mainly in the age group of 60 and over (9,3 and 27,7%, respectively). All the dysplasia types prevailed in the patients that had carried the prosthesis for more than 5 years and they mostly affected the keratin; in a same way, among the observed lesions, the stomatitis affected a higher percentage (31,2), mainly in the palate (82,3%), while 8,3% corresponded to the leukoplakia. Conclusion: The cytological checkups are indispensable for the diagnostic confirmation of dysplasic changes and they allow to prevent early oral cancer.


Subject(s)
Dental Prosthesis , Denture, Complete , Leukoplakia, Oral , Cytodiagnosis , Mouth Mucosa
9.
Article in English | LILACS-Express | LILACS | ID: biblio-1385878

ABSTRACT

ABSTRACT: The aim of this study is to evaluate the effect of two ethyl cyanoacrylate-based adhesives on the growth of Candida albicans biofilms on a heat-polymerized resin, after 7, 14, and 30 days of exposure. Ninety circular (10 x 2 mm) heat-polymerized resin specimens were equally divided into three groups: control, conventional ethyl cyanoacrylate (ECAc), and ethyl cyanoacrylate gel (ECAg). Two layers of 50 µL of each material were applied to the respective groups. C. albicans SC5314 strain was activated and standardized to 107 cells/mL-1. Specimens were immersed in 1 mL of artificial saliva and deposited in 1 mL fungal suspension, washed, and immersed in 1 mL of RPMI for 7, 14, and 30 days. The medium was changed at 48-hour intervals. The final suspension was diluted (10 -1 to 10-4) and deposited on Sabouraud dextrose agar for 48 h at 37 °C. After this period, the colonies were quantified using the CFU/mL calculation. Data were evaluated using one- way ANOVA and Tukey's test for post-hoc analysis (P=0.05). It was observed that both adhesives significantly reduced (P<0.05) biofilm formation compared to the control at all evaluated periods. In conclusion, an immediate and long-term inhibitory effect on C. albicans biofilm formation was observed.


RESUMEN: El objetivo del estudio fue evaluar el desarrollo microbiano en superficies de resina acrílica de termopolimerización, acondicionadas previamente, con adhesivos a base de etil cianoacrilato después de 7, 14 y 30 días de exposición en biofilm de Candida albicans. Noventa muestras circulares (10 x 2 mm) de resina acrílica de termopolimerización se dividieron por igual en tres grupos: control, etil cianoacrilato convencional (ECAc) y etil cianoacrilato en gel (ECAg). Se aplicaron dos capas de 50 µl de cada adhesivo en cada muestra. Simultáneamente, se activó la cepa C. albicans SC5314 y se estandarizó a 107 células/ml-1. Las muestras fueron sumergidas en 1 mL de saliva artificial por dos horas y luego se depositó 1 mL de suspensión fúngica por una hora. En seguida cada muestra se lavó y se sumergió en 1 mL de RPMI durante 7, 14 y 30 días, con cambios del medio a cada 48 horas. La suspensión final se diluyó (10-1 a 10-4) y se depositó en agar dextrose Sabouraud durante 48 h a 37° C. Después de este período, las colonias se cuantificaron mediante el cálculo de UFC / mL. Los datos obtenidos se evaluaron por medio del test ANOVA-one way y la prueba de Tukey para el análisis post- hoc (p = 0,05). Se observó que ambos adhesivos redujeron significativamente (P<0,05) la formación del biofilm de Candida albicans al ser comparados con el grupo control en todos los períodos evaluados. Los adhesivos a base de etil cianoacrilato poseen un efecto inhibidor de biofilm de Candida albicans de hasta 30 días, al ser aplicados dos veces en resinas acrílicas de termopolimerización.

10.
Journal of Prevention and Treatment for Stomatological Diseases ; (12): 902-906, 2022.
Article in Chinese | WPRIM | ID: wpr-942768

ABSTRACT

@#Polyetheretherketone (PEEK) is known as a high-grade engineering plastic with good mechanical properties, chemical stability and biocompatibility. Currently, PEEK materials have been widely used in prosthodontics, such as complete dentures and removable partial dentures. The relevant research shows that PEEK posts are superior to glass fiber posts, which have high tensile bond strength and bending strength. At present, few case reports of PEEK postcores have been published, and clinical case reports suggest that PEEK postcores have good oral prosthetic aesthetics and are ideal and reliable postcore crown materials. However, the preparation and surface treatment methods of PEEK require further refinement. A review of the related properties of PEEK and the prospects of its application in the field of postcore crown restoration will be presented in this paper.

11.
Araçatuba; s.n; 2022. 73 p. ilus, graf, tab.
Thesis in Portuguese | LILACS, BBO | ID: biblio-1435928

ABSTRACT

Objetivo: Avaliar se customizações da prótese total mandibular (reembasamento e restabelecimento da dimensão vertical de oclusão) influenciam na amplitude eletromiográfica dos músculos masseter e temporal, força máxima de mordida e qualidade de vida relacionada à saúde oral de indivíduos edêntulos. Materiais e métodos: Usuários de próteses totais que usavam o mesmo par de próteses por mais do que 5 anos foram incluídos (sem disfunção temporomandibular) (n=15). Avaliações de qualidade de vida (Oral Health Impact Profile for Edentulous ­ OHIP-EDENT), força máxima de mordida, e eletromiografia dos músculos masseter e temporal foram realizadas em 5 tempos diferentes (T1 ­ próteses antigas originais; T2 ­ após 18 dias de uso da prótese mandibular reembasada; T3 ­ após 18 dias do restabelecimento da dimensão vertical de oclusão; e T4 e T5 ­ 30 e 100 dias de uso de novas próteses totais. Resultados: Não houve diferenças significativas entre os pontos de tempo para todos os testes eletromiográficos e de força máxima de mordida. O OHIP-EDENT mostrou que o reembasamento pode contribuir para uma maior adaptação da prótese total mandibular e conforto do paciente (T2), em contrapartida T3 foi associado com o desconforto do paciente (p<0.05). Conclusão: Baseado na avaliação de qualidade de vida relacionada à saúde oral, o reembasamento da prótese total mandibular ocasionou um aumento do conforto mastigatório para os pacientes, e o restabelecimento prévio da dimensão vertical de oclusão causou um desconforto para os pacientes. A amplitude eletromiográfica mostrou que as customizações realizadas neste estudo não aumentaram ou diminuíram o esforço mastigatório significativamente. Além disso, todos os valores de força máxima de mordida observados estavam dentro do clinicamente aceitável(AU)


Objective: To evaluate whether customizations of mandibular complete dentures (relining and restoration of the vertical dimension of occlusion) influence the electromyographic amplitude of the masseter and temporal muscles, maximum bite force and oral health-related quality of life of edentulous individuals. Materials and methods: Complete denture wearers who wore the same pair of dentures for more than 5 years were included (without temporomandibular dysfunction) (n=15). Assessments of quality of life (Oral Health Impact Profile for Edentulous ­ OHIP-EDENT), maximum bite force, and electromyography of the masseter and temporal muscles were performed at 5 different times (T1 - original old dentures; T2 - after 18 days of wearing relined mandibular denture; T3 - after 18 days of restoration of the vertical dimension of occlusion; and T4 and T5 - 30 and 100 days of wearing new complete dentures. Results: There were no significant differences between the time points for all electromyographic and maximum bite force tests. The OHIP-EDENT showed that relining can contribute to greater adaptation of the mandibular denture and patient comfort (T2), in contrast, T3 was associated with patient discomfort (p<0.05). Conclusion: Based on the assessment of quality of life related to oral health, the reline of the mandibular complete denture caused an increase in masticatory comfort for the patients, and the previous definitive restoration of the vertical dimension of occlusion caused discomfort for patients. The electromyographic amplitude showed that the customizations performed in this study did not significantly increase or decrease masticatory effort. In addition, all observed maximum bite force values were within the clinically acceptable range(AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Quality of Life , Bite Force , Jaw, Edentulous , Denture, Complete , Masticatory Muscles , Vertical Dimension , Oral Health , Denture Rebasing , Electromyography , Mouth Rehabilitation
12.
Odovtos (En línea) ; 23(2)ago. 2021.
Article in English | LILACS, SaludCR | ID: biblio-1386530

ABSTRACT

ABSTRACT: The clinical management of the epulis involves the elimination of causal factors, excision of fibrous tissue excess accompanied by an appropriate prosthetic rehabilitation. The confection of interim prosthesis or the rectification of old prosthesis for the setting up of a tissue conditioner if necessary, to improve the healing and prevent the decrease of the vestibule depth after the surgical exeresis. Throughout this paper, we are going to present a new technique for the correction of old prostheses poorly adapted for the management of a case of the epulis fissuratum.


RESUMEN: El manejo clínico de un épulis comprende la eliminación de los agentes causales y la eliminación del tejido fibroso, acompañado de una adecuada rehabilitación protésica. Es necesaria la confección de una prótesis provisional o la rectificación de la prótesis vieja, para la colocación del acondicionador de tejidos si fuera necesario para mejorar el sanado y prevenir la disminución de la profundidad del vestíbulo después de la exéresis quirúrgica. En este artículo, presentaremos una nueva técnica para la corrección de la prótesis desajustada en el manejo de un caso de épulis fisurado.


Subject(s)
Humans , Dental Prosthesis/instrumentation , Gingival Diseases/therapy
13.
Odontol. vital ; (34)jun. 2021.
Article in English | LILACS, SaludCR | ID: biblio-1386447

ABSTRACT

Abstract Introduction: Inspite of the great advances in dentistry, aging populations imply that there are still significant numbers of edentulous people worldwide. In most cases, implant-assisted prosthetic rehabilitation is the best solution. However, economic issues constrain access to this therapeutic approach, meaning that conventional removable prosthetics continue to be the most frequent treatment. In the removable denture making process, the so-called traditional method has been widely taught and used. It involves taking two impressions: a preliminary one followed by a definitive one (or functional). The simplified method constructs the prosthesis directly from the first impression obtained with a stock tray, without the need of a second impression. Purpose: To review the scientific evidence comparing both methods in terms of patient satisfaction, clinical quality, and masticatory performance and capacity. Results: No advantages have been found in favor of the traditional method regarding the four variables selected. Conclusions: According to the available information, the traditional method of taking impressions for complete removable dental prostheses does not provide significantly superior clinical results when compared to those obtained using the simplified method in terms of clinical quality, patient satisfaction, performance and masticatory capacity.


Resumen Introducción: Pese a los avances de la odontología, el fenómeno del envejecimiento de la población ha generado que la cantidad de personas desdentadas totales aún represente una cifra significativa. Los artificios protésicos implanto-asistidos constituyen, en la mayoría de los casos, la mejor alternativa rehabilitadora. Sin embargo, la variable económica surge como el principal impedimento para que los pacientes accedan a este recurso, y por este motivo, mantienen la prótesis total removible como una opción terapéutica. Para su confección, el método tradicional indica la necesidad de tomar dos impresiones: una preliminar y una definitiva o funcional. El método simplificado, confecciona la prótesis a partir de la primera impresión, obtenida con cubeta de stock. Objetivo: Revisar evidencia científica que compara ambos métodos en cuanto a las variables de: satisfacción del paciente, calidad clínica, rendimiento y capacidad masticatoria. Resultados: No se verifican ventajas a favor del método tradicional en relación a las variables estudiadas. Conclusiones: En concordancia con la información recabada, los resultados clínicos obtenidos mediante el método tradicional de toma de impresiones para prótesis totales no son significativamente superiores a los del método simplificado en relación a calidad clínica, satisfacción del paciente, rendimiento y capacidad masticatoria.


Subject(s)
Dental Impression Technique/instrumentation , Dental Prosthesis/methods
14.
Rev. Odontol. Araçatuba (Impr.) ; 42(1): 24-32, jan.-abr. 2021. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1148164

ABSTRACT

O uso de próteses mal adaptadas pode ocasionar o surgimento de processos proliferativos não neoplásicos. A hiperplasia fibrosa inflamatória (HFI) é uma lesão benigna, proveniente de reação hiperplásica do tecido conjuntivo fibroso em resposta às injúrias crônicas de baixa intensidade. O objetivo do presente trabalho é relatar um caso clínico sobre remoção cirúrgica de HFI, seguida de reabilitação oral com próteses removíveis. Paciente de 75 anos do sexo masculino relatou que gostaria de fazer a troca da sua prótese, pois a mesma estava fraturada. Ao exame clínico intra-oral constatou-se que suas próteses possuíam higienização precária, e, a superior, possuía uma borda cortante que causou uma lesão hiperplásica na região de fundo de vestíbulo anterior. Quanto ao aspecto clínico, apresentava-se com consistência fibrosa e firme à palpação, de coloração semelhante a mucosa e assintomática. O plano de tratamento proposto foi reembasamento da prótese antiga com resina Soft Confort (Dencril, Brasil) eliminando as áreas que traumatizavam a mucosa, cirurgia pré-protética para a remoção da HFI, exame histopatológico e a confecção de novas próteses, sendo a superior prótese total convencional e a inferior prótese parcial removível. Observa-se a importância no cuidado do planejamento reabilitador protético dos pacientes, pois, como foi descrito neste caso, em algumas situações pode haver necessidade de lançarmos mão de diversas modalidades de tratamento prévias à reabilitação(AU)


The use of poorly adapted prostheses can lead to the emergence of non-neoplastic proliferative processes. Inflammatory fibrous hyperplasia (HFI) is a benign lesion, resulting from a hyperplastic reaction of fibrous connective tissue in response to low-intensity chronic injuries. The aim of the present study is to report a clinical case about surgical removal of HFI, followed by oral rehabilitation with removable prostheses. A 75-year-old male patient reported that he would like to change his prosthesis, because it was fractured. On intra-oral clinical examination, it was found that his prostheses had poor hygiene, and the upper one had a cutting edge that caused a hyperplastic lesion in the deep region of the anterior vestibule. As for the clinical aspect, it was fibrous and firm on palpation, mucosa-like and asymptomatic. The proposed treatment plan was to repurpose the old prosthesis with Soft Confort resin (Dencril, Brazil), eliminating the areas that traumatized the mucosa, pre-prosthetic surgery for the removal of HFI, histopathological examination and the making of new prostheses, the upper prosthesis being conventional total and the lower partial removable prosthesis. It is observed the importance in the care of the prosthetic rehabilitation planning of the patients, because, as it was described in this case, in some situations it may be necessary to resort to different treatment modalities prior to the rehabilitation(AU)


Subject(s)
Dental Prosthesis Design , Hyperplasia , Connective Tissue , Denture, Complete , Denture, Partial, Removable , Denture Rebasing
15.
Braz. dent. j ; 32(2): 64-71, Mar.-Apr. 2021. tab, graf
Article in English | LILACS, BBO | ID: biblio-1339323

ABSTRACT

Abstract This study evaluated the dental displacement in dentures included in different flasks and processed by the Australian cycle modified or by microwave. Metal pins were placed on the teeth as reference for measurements: a) Incisal edge of maxillary and mandibular central incisors, buccal cusp of maxillary and mandibular vestibular first premolars, and mesiobuccal maxillary and mandibular cusps of second molars; b) Incisor to incisor, premolar to premolar and molar to molar; c) Left incisor to left molar and right incisor to right molar, and d) Vertical. Dentures were divided according to flasks (n=10): G1- Metal; G2- HH bimaxillary metal; G3-Microwaves; G4- HH bimaxillary microwaves. For G1 and G2, polymerization at 65ºC/30 min, flame quenched for 30 min, heating at 65ºC/30 min, boiling water for 1 h. For G3 and G4, microwave (20 min/140 W and 5 min/560 W). Comparator microscope with digital camera and analytical unit assessed the measurements before and after denture polymerization. The final distance was made subtracting the distance before the denture processing from the distance of the dental displacement after processing. The value of the difference was submitted to 2-way ANOVA, considering the flask type and denture type. Maxillary denture showed greater displacement when compared to mandibular denture. Flask types and interaction with denture types showed similar difference between before and after polymerization. In conclusion, displacement promoted by flask types in dentures cured by polymerization cycles promoted similar effect on the distance between teeth. Greater value for distance between teeth occurred for maxillary denture.


Resumo O objetivo neste estudo foi avaliar o deslocamento dental em próteses totais incluídas em diferentes tipos de muflas e polimerizadas pelo ciclo australiano ou por micro ondas. Pinos metálicos foram colocados nos dentes como pontos de referência para as medidas: a) Borda incisal dos incisivos centrais maxilares e mandibulares, cúspide vestibular dos primeiros pré molares maxilares e mandibulares e cúspides mésiovestibulares dos segundos molares maxilares e mandibulares; b) Distâncias látero-laterais incisivo a incisivo, pré-molar a pré-molar e molar a molar; c) Distâncias horizontais anteroposterior incisivo esquerdo a molar esquerdo e incisivo direito a molar direito, e d) Vertical. As próteses foram separadas de acordo com o tipo de mufla (n=20): G1- Metálica; G2-HH bi-maxilar metálica; G3- Micro-ondas; G4- HH bi-maxilar micro ondas. Ciclo de polimerização para G1 e G2, água a 65ºC por 30 minutos, aquecimento interrompido por 30 minutos, reaquecimento a 65ºC por 30 minutos, seguido de água fervente por 1 hora. Para G3 e G4, micro ondas (20 minutos a 140 W e 5 minutos a 560 W). As medidas foram avaliadas com microscópio comparador linear. A distância final entre os dentes foi obtida subtraindo o valor da distância antes do processamento da prótese do valor da distância resultante do deslocamento dentário após o processamento. A diferença obtida entre essas distâncias foi submetida à ANOVA de 2 fatores, considerando como variáveis tipo de mufla e tipo de prótese. A prótese maxilar apresentou maior deslocamento dental quando comparada à mandibular. Os tipos de muflas e a interação com os tipos de próteses mostraram movimentos dentais similares antes e depois da polimerização. Em conclusão, o deslocamento dental promovido por diferentes tipos de frascos em próteses curadas por diferentes ciclos de polimerização promoveu efeito semelhante na alteração da distância entre os dentes. Maior valor para a mudança de distância entre os dentes ocorreu na prótese maxilar.


Subject(s)
Denture, Complete , Australia , Polymerization
16.
Acta odontol. latinoam ; 34(1): 35-42, Apr. 2021. graf
Article in English | LILACS-Express | LILACS | ID: biblio-1284932

ABSTRACT

ABSTRACT The aim of this study was to compare jaw relation record in the completely edentulous patient using acrylic rim trays with curved or flat registration plates or using the manual guidance technique. The study included 17 patients - 11 female and 6 male, average age 70 years. Three jaw relation records were taken during one session, in the same vertical dimension, using acrylic rim trays: (1) with manual guidance (IM), (2) with self-guided recording system with acrylic rim tray and central support using a curved plate (BYC) and (3) with self-guided recording system with acrylic rim tray and central support using a flat plate (BYR). The models were mounted on a Whip Mix 2240 articulator to which a condyle position device (Orthodent) was added to register, at the level of the condyle box and incisal table, the differences among the positions recorded with the different setups (IM, BYC and BYR). The distances were measured on millimeter paper provided by the recording system manufacturer. For statistical analysis, confidence intervals (95%) were calculated for the mean differences and Student's t-test for paired data (significance level: alpha<0.05). On both the mesiodistal plane and the vertical plane at the level of each condyle box and the incisal table, there were statistically significant differences among the three systems (p<0.001). At the level of incisal table, BYC and BYR provided more retrusive records than IM [arithmetic means (standard deviations) in millimeters: 3.82 (2.10) and 4.53 (2.18), respectively). The records obtained with BYR were significantly more retrusive with BYC [arithmetic mean (standard deviation) in millimeters: 1.41 (1.00)]. We reject the null hypothesis that proposes that all three registration systems described are clinically equivalent for establishing a jaw relation record in completely edentulous patients.


RESUMEN El objetivo de este estudio fue comparar el registro de la posición intermaxilar en el paciente desdentado total obtenido con el uso de cubetas rodete de acrílico y platinas de registro curva o recta y con la técnica de inducción manual. Se incluyeron en el estudio 17 pacientes, 11 mujeres y 6 varones con edad promedio de 70 años. En cada uno de ellos se obtuvieron en la misma sesión y en la misma dimensión vertical tres registros intermaxilares con cubetas rodete de acrílico: uno con inducción manual (IM), otro autoinducido con el sistema de cubeta rodete de acrílico y apoyo central único utilizando una superficie palatina de registro curva (BYC) y un tercero con este mismo sistema pero con la superficie palatina recta (BYR). Los modelos correspondientes fueron montados en un articula-dor Whip Mix modelo 2240 al que se le adicionó un dispositivo de posición condilar (Orthodent) para registrar, a nivel de la caja condílea y la platina incisiva, las diferencias existentes entre las posiciones obtenidas con cada una de las variantes de las platinas en las cubetas rodete acrílicas y la posición registrada con inducción manual. Las distancias fueron medidas sobre papel milimetrado provisto por el fabricante del sistema de registro. El análisis estadístico se llevó a cabo mediante el cálculo de intervalos de confianza (95%) para las diferencias medias y prueba de t de student para datos apareados (nivel de significancia: alfa<0,05). Tanto en el plano mesiodistal como en el vertical a nivel de cada caja condilea como en la platina incisiva, se encontró diferencia estadísticamente significativa entre las tres variables de registro (p<0,001). A nivel de las platinas incisivas tanto BYC como BYR proporcionaron registros más retrusivos que IM [medias aritméticas (desviaciones estándar) en milímetros: 3,82 (2,1°) y 4,53 (2,18), respectivamente). Los obtenidos con BYR fueron significativamente más retrusivos que en el grupo BYC [media aritmética (desviación estándar) en milímetros: 1,41 (1,00)]. Rechazamos la hipótesis nula que propone que los tres sistemas de registro expuestos son clínicamente equivalentes para establecer una posición de registro intermaxilar en desdentados totales.

17.
J. oral res. (Impresa) ; 10(1): 1-8, feb. 24, 2021. ilus, graf, tab
Article in English | LILACS | ID: biblio-1283264

ABSTRACT

Background: The corollary is not investigated in the completely edentulous patients with palatal tori. Objective: The aim of this study was to assess the oral stereognostic ability in completely edentulous patients with palatal tori. Material and Methods: Thirty-four completely edentulous patients aged 50 to 89 years were allocated to Group 1 (without palatal tori, n=18) and Group 2 (with palatal tori, n=16). The oral stereognostic test was conducted using 6 intraoral test pieces (circle/square/rectangle/triangle/plus/toroid) that were fabricated to standard dimensions using the light cure acrylic resin. Each test piece was placed in the patient's mouth and was asked to manipulate the test piece between the tongue and the palate. The patients identified the shapes by matching them on a shape chart. Each correct identification was assigned a score of 1. The response time taken to identify each shape was recorded. Statistical computation was done using a chi - square test and Mann-Whitney U test. Results: Significant difference was observed in the overall scoring percentages between the 2 groups (p<0.05). Group 2 had lower oral stereognostic scores compared to group 1 (p<0.05). There was no statistically significant difference in the mean response time for identifying the shapes among the groups, however group 2 patients had longer response time. Conclusion: Oral stereognostic ability of the completely edentulous patients with torus palatinus was lower when compared to completely edentulous patients without tori.


Antecedentes: el corolario no se investiga en los pacientes completamente desdentados con toros palatinos. Objetivo:El objetivo de este estudio fue evaluar la capacidad estereognóstica oral en pacientes completamente edéntulos con toros palatinos. Material y Métodos: Treinta y cuatro pacientes completamente edéntulos de 50 a 89 años fueron asignados al Grupo 1 (sin toros palatinos, n = 18) y al Grupo 2 (con toros palatinos, n = 16). La prueba estereognóstica oral se realizó utilizando 6 piezas de prueba intraorales (círculo / cuadrado / rectángulo / triángulo / cruz / aro) que se fabricaron a dimensiones estándar utilizando la resina acrílica fotopolimerizable. Cada pieza de prueba se colocó en la boca del paciente y se le pidió que manipulara la pieza de prueba entre la lengua y el paladar. Los pacientes identificaron las formas haciéndolas coincidir en un gráfico de formas. A cada identificación correcta se le asignó una puntuación de 1. Se registró el tiempo de respuesta necesario para identificar cada forma. El cálculo estadístico se realizó mediante la prueba de chi-cuadrado y la prueba U de Mann-Whitney. Resultados: Se observó una diferencia significativa en los porcentajes de puntuación generales entre los 2 grupos (p<0,05). El grupo 2 tuvo puntuaciones estereognósticas orales más bajas en comparación con el grupo 1 (p<0,05). No hubo diferencia estadísticamente significativa en el tiempo medio de respuesta para identificar las formas entre los grupos, sin embargo, los pacientes del grupo 2 tuvieron un tiempo de respuesta más largo.Conclusión: La capacidad estereognóstica oral de los pacientes completamente edéntulos con torus palatino fue menor en comparación con los pacientes completamente edéntulos sin torus.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Palate/pathology , Stereognosis , Exostoses , Mouth, Edentulous , Palate, Hard , Denture, Complete
18.
RGO (Porto Alegre) ; 69: e20210059, 2021. tab, graf
Article in English | LILACS-Express | LILACS, BBO | ID: biblio-1351399

ABSTRACT

ABSTRACT Objective: The aim of this cross-sectional study was to evaluate the anatomical characteristics of edentulous residual ridges in stone casts of complete dentures users and assess correlations with masticatory efficiency. Methods: The sample included 74 study casts, of which 37 were higher and 37 bottom. Measurements were performed using a drypoint compass and a transparent ruler. Arches and ridges of maxillae and mandibles were classified into small, medium, and large. Masticatory efficiency was obtained by the sieve method with the old prostheses and 3 months after placement of new prostheses. The correlations between the anatomical variables of the ridges and arches (height, width and size) and masticatory efficiency were verified by the Spearman correlation test. Significant differences in masticatory efficiencies were assessed by the Wilcoxon test. Results: People with larger maxillary alveolar ridge presented better masticatory performance with old and new dentures. There was no correlation between maxillary ridge width and size with masticatory efficiency, but a correlation was found between maxillary arch width and masticatory efficiency evaluated with the old dentures. Conclusions: With the new dentures, the correlation had a tendency for significance. For the mandible, no correlation was found between height, width, and size of the ridge or with width, length, and size of the arch and masticatory efficiency. In addition, there was no significant difference between masticatory efficiencies evaluated with the old and new prostheses. For the maxilla, ridge height and arch width influence masticatory efficiency. For the mandible, the anatomy had little influence on masticatory performance.


RESUMO Objetivo: Este estudo transversal objetivou avaliar as características anatômicas de rebordos residuais de usuários de próteses totais em gesso pedra e avaliar correlações com a eficiência mastigatória. Métodos: A amostra incluiu 74 modelos de estudo, sendo 37 superiores e 37 inferiores. As medidas foram realizadas com um compasso de ponta seca e régua transparente. Os arcos e rebordos da maxila e mandíbula foram classificados em pequenos, médios e grandes. A eficiência mastigatória foi obtida pelo método da peneira com as próteses antigas e 3 meses após a instalação das próteses novas. As correlações entre as variáveis anatômicas dos rebordos e arcos (altura, largura e tamanho) e a eficiência mastigatória foram verificadas pelo teste Spearman. Diferenças significativas nas eficiências mastigatórias foram avaliadas pelo teste de Wilcoxon. Resultados: Pessoas com crista alveolar maxilar alta apresentaram melhor desempenho mastigatório com próteses novas e antigas. Não houve correlação entre a largura e o tamanho da crista maxilar com a eficiência mastigatória, mas foi encontrada uma correlação entre a largura do arco maxilar e a eficiência mastigatória avaliadas com as próteses antigas. Para a mandíbula, não foi encontrada correlação entre altura, largura e tamanho da crista ou com largura, comprimento e tamanho do arco e eficiência mastigatória. Além disso, não houve diferença significativa entre as eficiências mastigatórias avaliadas com as próteses antigas e novas. Conclusão: Para a maxila, a altura da crista e a largura do arco influenciam a eficiência mastigatória. Para a mandíbula, a anatomia teve pouca influência no desempenho mastigatório.

19.
J. appl. oral sci ; 29: e20200948, 2021. tab, graf
Article in English | LILACS | ID: biblio-1340105

ABSTRACT

Abstract Appropriated denture hygiene is a predictive factor for longevity of rehabilitation treatment and maintenance of the oral mucosal health. Although, disinfectant solutions are commonly used as denture cleansers, the impact of these solutions on acrylic resin-based dentures remain unclear. Objective To evaluate, in vitro, the antibiofilm activity of complete denture hygiene solutions and their effects on physical and mechanical properties of acrylic resin. Methodology For antibiofilm activity measurement acrylic resin specimens were contaminated with Candida albicans, Candida glabrata and Streptococcus mutans. After biofilm growth, the specimens were assigned to the hygiene solutions: Distilled water (Control); 0.2% Sodium hypochlorite (SH); Efferdent Power Clean Crystals (EPC) and 6.25% Ricinus communis (RC). The viability of microorganisms was evaluated by agar plate counts. In parallel, physical, and mechanical properties of the acrylic resin were evaluated after simulating a 5-year period of daily immersion in the previously mentioned solutions. The changes in surface roughness, color, microhardness, flexural strength, impact strength, sorption and solubility were evaluated. Data were compared by ANOVA followed by the Tukey test or Kruskal-Wallis followed by the Dunn test depending on the distribution (α=0.05). Results Regarding antibiofilm action, SH eliminated all microorganisms while EPC and RC exhibited moderate action against S. mutans (p=0.001) and C. glabrata (p<0.001), respectively. Relative to effects on the physical and mechanical properties of the acrylic resin, RC led to higher values of color change (p=0.030), hardness (p<0.001), surface roughness (p=0.006) and flexural strength (p<0.001). Moreover, RC induced the highest values of changes in solubility (p<0.001). EPC promoted greater changes in surface morphology, whereas immersion in SH retained the initial appearance of the acrylic resin surface. All hygiene solutions reduced the impact strength (p<0.05). Conclusion SH presented the most effective antibiofilm activity. In addition, changes on properties were observed after immersion in RC, which were considered within acceptable limits.


Subject(s)
Acrylic Resins , Denture Cleansers/pharmacology , Surface Properties , Materials Testing , Hygiene , Biofilms , Denture Bases , Denture, Complete
20.
Chinese Journal of Medical Education Research ; (12): 636-640, 2021.
Article in Chinese | WPRIM | ID: wpr-908846

ABSTRACT

Objective:To explore the application effect of mind mapping in the experimental teaching of complete denture for the undergraduates of stomatological technology.Methods:In this study, the undergraduates of stomatological technology in Chongqing Medical University were divided into three groups. They were taught with traditional experimental teaching of complete denture, mind mapping teaching and modified mind mapping teaching respectively. The students' mastery degree were evaluated by experiment examination, theoretical examination and comprehensive examination (a weight to experiment and theoretical examination). SPSS 22.0 was used for statistical analysis.Results:The results of one-way ANOVA showed that there were significant differences in experimental examination ( F=99.471, P<0.001) and comprehensive examination ( F=22.909, P<0.001). Dunnett T3 analysis found that the comprehensive examination score of mind mapping group and modified mind mapping group were significantly improved than that of the traditional experimental group ( P<0.001). Conclusion:For the undergraduates who lack of clinical experience, mind mapping can effectively improve students' understanding and mastery of relevant knowledge in complete denture making.

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