Resultado de las sobredentaduras superiores según número de implantes dentales en pacientes edéntulos totales / Outcome of maxillary overdentures according to the number of dental implants in full edentulous patients

RESUMEN Objetivo: Realizar una revisión de la literatura sobre el resultado de las sobredentaduras maxilares según el número de implantes dentales en pacientes edéntulos totales. Materiales y Métodos: Se realizó una búsqueda bibliográfica sistematizada en los motores de búsqueda Pubmed, Scopus y Web of Science y luego de establecer los criterios y filtros de la misma, se utilizaron 6 artículos. De los 6 artículos analizados, 4 fueron estudios de tipo ensayo clínico aleatorizado, 1 estudio prospectivo y 1 estudio retrospectivo. Resultados: Los resultados clínicos de las sobredentaduras maxilares, basados en el número de implantes sobre los cuales fueron soportadas, y comparando los protocolos más difundidos e investigados como los de All-on-4 y All-on-6, fueron similares. Se consideran óptimos, confiables, exitosos y longevos, sin diferencia significativa según el número de implantes dentales colocados. Conclusiones: Las sobredentaduras maxilares soportadas por 4 o 6 implantes fueron técnicas de tratamiento confiables, y ofrecen resultados comparables. Las complicaciones fueron limitadas y los resultados óptimos y duraderos.

ABSTRACT Objective: To review the literature on the outcome of maxillary overdentures according to the number of dental implants in edentulous patients. Materials and Methods: A systematic bibliographic search was carried out in the Pubmed, Scopus and Web of Science search engines and, after appliying the criteria and filters, 6 articles were used. Of the 6 articles analyzed, 4 were randomized clinical trial type studies, 1 prospective study and 1 retrospective study. Results: The results of maxillary overdentures, according to the number of implants used to support them, and comparing the most widespread and researched protocols such as All-on-4 and All-on-6, were similar. They are considered optimal, reliable, successful and long-lived, with no significant difference within the number of dental implants placed. Conclusions: Maxillary overdentures supported by 4 or 6 implants were reliable, and exhibit comparable results. The complications were limited, and the results were optimal and enduring.

Dental Loss in the Lower Socioeconomic Stratum of a Sample of the Chilean Population Born in the 19TH and 20TH Centuries / Pérdida Dental en el Estrato Socioeconómico Bajo de una Muestra de la Población Chilena Nacida en los Siglos XIX y XX

SUMMARY: Partial or total dental loss (edentulism) is associated with decreased quality of life. Chile has large socioeconomic gaps, which are also recognized in oral health, but it is not known how Edentulism has evolved throughout the country. The aim of this study was to determine the edentulism in people born during the 19th and 20th centuries in Chile, who died in the 20th century, and to compare it with current data from the Chilean Ministry of Health (MINSAL) to observe its evolution in the country. For this purpose, 60 3D models of skulls from the Subactual Osteological Collection of Santiago were analyzed (30 individuals per sex), in which the presence and absence of teeth in antemortem in the maxilla were analyzed. A high percentage of tooth loss was observed, with 65 % partial edentulism, a 30 % total edentulism, and only 5 % had complete dentition in this osteological collection. In addition, a significant decrease over time was found; in 2017, the percentage of complete dentition at the national level was 32.8 %. A higher frequency of edentulism was also found in females from the osteological collection, with a significant probability of twice as much edentulism as in males. However, this sex difference was smaller than those found in the current study. Our study is the first to compare edentulism in Chile in two different time periods, since, in addition to studying it in the 19th and 20th century, it is carried out with data from the present day and in line with previous research, reveals the importance of socioeconomic and sex variables for dental loss.

La pérdida parcial o total de dientes (edentulismo) se asocia a una disminución de la calidad de vida. Chile tiene grandes brechas socioeconómicas, que también se reconocen en la salud oral, pero se desconoce cómo ha evolucionado el edentulismo en el país. El objetivo de este estudio fue determinar el edentulismo en personas nacidas durante los siglos XIX y XX en Chile y fallecidas en el siglo XX, y compararlo con datos actuales del Ministerio de Salud de Chile (MINSAL) para observar su evolución en el país. Para ello, se analizaron 60 modelos 3D de cráneos de la Colección Osteológica Subactual de Santiago (30 individuos por sexo), en los que se analizó la presencia y ausencia de dientes en dentición antemortem en el maxilar. Se observó un alto porcentaje de pérdida dentaria, con un 65 % de edentulismo parcial y un 30 % de edentulismo total, y sólo un 5 % presentaba dentición completa en esta colección osteológica. Además, se encontró una disminución significativa a lo largo del tiempo; en 2017, la dentición completa a nivel país fue del 32,8 %. También se encontró una mayor frecuencia de edentulismo en las mujeres de la colección osteológica, con una probabilidad significativa del doble de edentulismo que en los hombres. Sin embargo, esta diferencia de sexo fue menor que la hallada en datos actuales. Este estudio es el primero que compara el edentulismo en Chile en dos épocas diferentes, ya que además de estudiarlo en los siglos XIX y XX, se realizó con datos de la actualidad y, en línea con investigaciones previas, revela la importancia de las variables socioeconómicas y de sexo en la pérdida dental.

Responsiveness of brazilian version of Ohipedent for applications of patient-centered approaches in clinical practice and research / Responsabilidade da versão brasileira do Ohipedent para aplicações de abordagens centrada no paciente na prática clínica e pesquisa

Objective: to evaluate the responsiveness of the Brazilian version of OHIP-EDENT instrument to applications of patient-centered approaches in dental clinical practice and research. Materials and Methods: one hundred edentulous patients up to 50 years old attending a public university clinic were enrolled in this non- randomized clinical study. All subjects received a new CD and answered an oral health-related quality of life (OHRQoL) instrument before treatment (BT) and 3 months after treatment (AT). The responsiveness was analyzed by dividing the mean score ranging from BT to AT by the standard deviation of change scores considering 0.2, 0.5, and 0.8 represent small, moderate, and large clinical changes, respectively. Results: There was a decrease in AT and DT in total scores and in all subscales (p<0.001). The OHIP-EDENT responsiveness scores dropped 14.46 points after treatment, demonstrating a positive reduction as well as an improvement in the patient OHRQoL after new CD. The SRM scored as 1.74, representing satisfactory responsiveness. Conclusion: the OHIP-EDENT (Brazilian version) presents capacity to detect changes in edentulous patients. This instrument can help weigh risks and benefits, assess the cost effectiveness of treatments, and influence recommendations on health policies adopting a more holistic approach to healthcare.

Objetivo: avaliar a capacidade de resposta da versão brasileira do instrumento OHIP-EDENT para aplicações de abordagens centradas no paciente na prática clínica e pesquisa odontológica. Materiais e Métodos: cem pacientes edêntulos de até 50 anos atendidos em uma clínica universitária pública foram incluídos neste estudo clínico não randomizado. Todos os indivíduos receberam uma nova prótese total (PT) e responderam a um instrumento de qualidade de vida relacionado à saúde bucal (QVRSB) antes do tratamento (AT) e 3 meses após o tratamento (DT). A capacidade de resposta foi analisada dividindo-se a pontuação média variando de AT a DT pelo desvio padrão dos escores de mudança, considerando que 0,2, 0,5 e 0,8 representam alterações clínicas pequenas, moderadas e grandes, respectivamente. Resultados: observou-se diminuição AT e DT das pontuações totais e de todas as subescalas (p<0,001). Os escores de responsividade do OHIP-EDENT caíram 14,46 pontos após o tratamento, demonstrando uma redução positiva das médias, bem como uma melhora na QVRSB do paciente após a nova PT. A capacidade de resposta foi 1,74, representando uma grande responsividade. Conclusão: o OHIP-EDENT (versão brasileira) apresenta capacidade de detectar a resposta em pacientes edêntulos. Este instrumento pode ajudar a pesar riscos e benefícios, avaliar a relação custo- eficácia dos tratamentos e influenciar recomendações sobre políticas de saúde que adotem uma abordagem mais holística dos cuidados de saúde.

Oral health conditions of institutionalized older adults and associated factors / Condições de saúde bucal de idosos institucionalizados e seus fatores associados

INTRODUCTION: The growth of the Brazilian older adult population has influenced the increased demand for institutionalization for this public, which usually has poor oral health conditions such as edentulism. OBJECTIVE: To characterize the oral health conditions and verify the variables related to the edentulism of institutionalized older adults and verify the relation of the time of institutionalization with oral health. METHODS: It was a cross-sectional study conducted with 512 institutionalized older adults in which the sociodemographic profile, general health conditions, and oral health care and conditions were evaluated by clinical exams, consultations of medical records, and structured questionnaires. The data were analyzed in the Statistical Package for Social Sciences using the Pearson Chi-square and Fisher's Exact tests and a logistic regression model using a 95% confidence level. RESULTS: A high DMFT (29.4), high prevalence of complete edentulism (61.3%), high need for maxillary (73.6%), and mandibular oral rehabilitation (56.8%) were observed. Edentulism was associated with older age (p<0.001), lower schooling (p<0.001) and non-retirement (p=0.031). It was found that longer institutionalization time remained associated with edentulism even when adjusted by sociodemographic and general health variables (p=0.013). It was also associated with the absence of brushing (p=0.024) and a lower frequency of tooth, gum, and prosthesis brushing (p<0.001). CONCLUSION: It is suggested to establish oral health care routines within long-term institutions for the effective maintenance of oral health throughout the institutionalization time.

INTRODUÇÃO: O crescimento da população idosa brasileira tem influenciado no aumento da procura por institucionalização para esse público, que costuma apresentar precárias condições de saúde bucal como o edentulismo. OBJETIVO: Caracterizar as condições de saúde bucal e verificar as variáveis relacionadas ao edentulismo de idosos institucionalizados, além verificar a relação do tempo de institucionalização com a saúde bucal. MÉTODOS: Trata-se de um estudo transversal realizado com 512 idosos institucionalizados em que o perfil sociodemográfico, as condições gerais de saúde e os cuidados e condições de saúde bucal foram avaliados por meio de exames clínicos, consultas a prontuários e questionários estruturados. Os dados foram analisados no Statistical Package for the Social Sciences por meio dos testes Qui-quadrado de Pearson e Exato de Fisher e um modelo de regressão logística com nível de confiança de 95%. RESULTADOS: Observou-se alto CPOD (29,4), alta prevalência de edentulismo total (61,3%), alta necessidade de reabilitação oral maxilar (73,6%) e mandibular (56,8%). O edentulismo esteve associado a maior idade (p<0,001), menor escolaridade (p<0,001) e ausência de aposentadoria (p=0,031). Verificou-se que o maior tempo de institucionalização permaneceu associado ao edentulismo mesmo quando ajustado por variáveis sociodemográficas e de saúde geral (p=0,013). Além disso, também esteve associado à ausência de escovação (p=0,024) e menor frequência de escovação de dentes, gengivas e próteses (p<0,001). CONCLUSÃO: Sugere-se estabelecer rotinas de atenção à saúde bucal nas instituições de longa permanência para a manutenção efetiva da saúde bucal ao longo do tempo de institucionalização.

A clinical application study of digital manufacturing simple intraoral Gothic arch-tracing device in determining the centric relation of complete dentures / 北京大学学报(医学版)

OBJECTIVE@#To verify the consistency between the digital manufacturing simple intraoral Gothic arch-tracing device and the traditional intraoral Gothic arch-tracing device in determining the centric relation of complete dentures restoration.@*METHODS@#Ten outpatients with edentulous jaws were selec-ted, and the centric relation of the patients was determined by digital manufacturing of simple intraoral Gothic arch-tracing device (T1) and traditional intraoral Gothic arch-tracing device (T2); the difference of clinical operation time between the two methods was recorded; the upper and lower edentulous jaw plaster models were scanned with two kinds of centric relation, the Standard Triangle Language (STL) files imported into Geomagic studio software to apply the best fitting of multiple points of the both upper jaw models, the fitted STL files imported into the 3 shape viewer software, and the maximum position deviations of the vertical, labial (buccal) and lingual directions of the mandibular midline area and molar areas in T1 and T2 groups measured. During the clinical complete dentures try-in, we observed whether there was midline deviation in the mouth of T1 group and T2 group, and whether the occlusion of posterior teeth was stable or not.@*RESULTS@#The mean time spent on determining the centric relation of T1 and T2 groups was (41.90±2.64) min, (57.50±2.37) min respectively. Paired t test was conducted in the two groups, P < 0.01 with significant statistical difference; The mean maximum position deviation between T1 group and T2 group of the midline mandibular region in labial lingual direction was (0.32±0.14) mm, that was (0.40±0.23) mm in vertical direction; the mean maximum position deviation of molar area in buccal lingual direction was (0.35±0.23) mm and that was (0.33±0.20) mm in vertical direction. In the vertical and horizontal directions, the maximum position deviation of mandibles between group T1 and group T2 was controlled within 0.5 mm. In the process of clinical complete dentures try-in, there was no deviation from the center line of dentures. There was not warping, swinging and other poor stability phenomena in T1 and T2 groups.@*CONCLUSION@#The digital manufacturing of simple intraoral Gothic arch-tracing device can be used to determine the centric relation of complete dentures, which can not only save time of clinical operation, but also ensure the accuracy of the centric relation.

A comparative study based on the mandibular movement track and the movement parameters of the virtual articulator in simulating occlusal adjustment / 华西口腔医学杂志

OBJECTIVES@#This study aimed to compare the effects of virtual adjustment on occlusal interferences in mandibular posterior single crown and three-unit bridge restorations by using the mandibular movement track and the movement parameters of a virtual articulator.@*METHODS@#Twenty-two participants were recruited. Digital casts of the maxillary and mandibular arches were obtained using an intraoral scanner, and the jaw registration system was used to record the data of the mandibular movement track and the movement parameters of the articulator. Four kinds of restorations with 0.3 mm occlusal interferences were designed with dental design software. In particular, single crowns were designed for teeth 44 and 46, whereas three-unit bridges were designed for teeth 44-46 and 45-47, and the corresponding natural teeth were virtually extracted. Virtual adjustment of the restorations was performed using two dynamic occlusal recordings, namely, the mandibular movement track and the movement parameters of the virtual articulator. A reverse-engineering software was used to measure the root-mean-square of the three-dimensional deviation of the occlusal surfaces between natural teeth and the adjusted restorations. The differences between the two methods of virtual-occlusion adjustment were compared and analyzed.@*RESULTS@#For the same group of restorations, the three-dimensional deviation of the mandibular movement track group were lower than those of the virtual articulator group, and the differences were statistically significant (P<0.05). For the four groups of restorations adjusted by the same method, the three-dimensional deviation of the 46-tooth single crown was the largest and the smallest three-dimensional deviation was that of the 44-tooth single crown. Statistical differences existed between the 44-tooth single crown and the other groups (P<0.05).@*CONCLUSIONS@#For the occlusal design of posterior single crown and three-unit bridge, the mandibular movement track could be a more effective approach to virtual occlusal adjustment than the movement parameters of the virtual articulator.

A simplified technique for fabricating complete dentures for patients with Parkinson's disease: a case report / Técnica simplificada como alternativa para confecção de próteses totais para paciente com Doença de Parkinson: relato de caso

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)

Oral disorders among older Chileans: prevalence, incidence, and years lived with disability / Prevalência, incidência e anos vividos com incapacidade por doenças bucais no Chile

OBJECTIVE: Prior epidemiological surveys revealed that Chile experiences a high burden of oral diseases. However, no prior study has reported estimates of untreated dental caries, periodontitis, and edentulism over a three-decade period for the country. Using estimates of the Global Burden of Diseases Study (GBD) 2019, the objective of this study is to report the trends of prevalence, incidence, and years-lived with disability (YLDs) due to untreated dental caries, periodontitis, and edentulism in Chilean older adults between 1990 and 2019. METHODS: Estimates of prevalence, incidence, and YLDs due to dental caries, periodontitis, and edentulism were produced for Chile, by age and sex, between 1990 and 2019, using Dismod-MR 2.1. Trends of oral disorders were analyzed using generalized linear regression models applying the Prais-Winsten method. RESULTS: Untreated dental caries and periodontal disease showed an increase in prevalence and YLDs, whereas edentulism prevalence, incidence, and YLDs decreased in all older adults age groups. The incidence of dental caries decreased in the younger groups and increased in the older age groups; while the incidence of periodontal disease increased in the younger and decreased in the older age groups. CONCLUSIONS: Overall, the burden of oral diseases in older Chileans increased between 1990 and 2019. This was particularly relevant for untreated caries and periodontal disease. Future estimates of oral diseases burden in Chile require concerted efforts to produce national health surveys that incorporate oral diseases metrics. These estimates are essential to inform policy formulation, implementation and evaluation. (AU)

OBJETIVO: Pesquisas epidemiológicas anteriores revelaram que o Chile apresenta uma elevada carga de doenças bucais. No entanto, nenhum estudo anterior relatou estimativas de cárie dentária não tratada, periodontite e edentulismo ao longo de um período de três décadas para o país. Usando estimativas do Global Burden of Diseases Study (GBD) 2019, o objetivo deste estudo é relatar as tendências de prevalência, incidência e anos vividos com incapacidade (YLDs) devido a cárie dentária não tratada, periodontite e edentulismo em idosos chilenos entre 1990 e 2019. METODOLOGIA: Estimativas de prevalência, incidência e YLDs devido à cárie dentária, periodontite e edentulismo foram produzidas para o Chile, por idade e sexo, entre 1990 e 2019, usando o Dismod-MR 2.1. Tendências de distúrbios bucais foram analisadas usando modelos de regressão linear generalizada aplicando o método Prais-Winsten. RESULTADOS: A cárie dentária não tratada e a doença periodontal mostraram um aumento na prevalência e nos YLDs, enquanto a prevalência, incidência e YLDs do edentulismo diminuíram em todas as faixas etárias de idosos. A incidência de cárie dentária diminuiu nos grupos mais jovens e aumentou nos grupos etários mais velhos; enquanto a incidência de periodontite aumentou nos grupos mais jovens e diminuiu nos grupos etários mais velhos. CONCLUSÕES: No geral, a carga de doenças bucais em idosos chilenos aumentou entre 1990 e 2019. Isso foi particularmente relevante para cárie não tratada e periodontite. As estimativas futuras da carga de doenças bucais no Chile exigem esforços concentrados para produzir pesquisas nacionais de saúde que incorporem métricas de doenças bucais. Essas estimativas são essenciais para informar a formulação, implementação e avaliação de políticas. (AU)

Discrepancia anteroposterior en registro de relación céntrica con apoyo central intraoral en cubetas rodetes acrílicas (BOPAYACU) e inducción manual en adultos mayores desdentados totales / Anteroposterior discrepancy in centric relation record with intraoral central support in acylic impaction cups (BOPAYACU) and manual induction in edentulous older adults

Objetivo: Comparar la discrepancia anteroposterior medida a nivel de la platina incisiva de 2 métodos de registro intermaxilar en la misma sesión que la im-presión definitiva en adultos mayores desdentados totales. Materiales y métodos. Se incluyeron en el es-tudio 20 pacientes (n=20) con edad promedio de 70 años. En cada uno de ellos se obtuvieron registros intermaxilares con cubetas rodete de acrílico: uno con inducción manual (IM) y otro autoinducido con el sistema de cubeta rodete de acrílico y apoyo central único utilizando una superficie palatina de registro curva (BYC). Los modelos fueron montados en un ar-ticulador Whip Mix modelo 2240 al que se le adicio-nó un dispositivo de papel milimetrado, Orthodent, a nivel de la platina incisiva, para registrar las dife-rencias existentes entre las posiciones obtenidas. El análisis estadístico se llevó a cabo mediante el cálcu-lo de intervalos de confianza (95%) para las diferen-cias medias y prueba de t de student para datos apa-reados (nivel de significancia: α<0,05). Resultados. En el plano mesiodistal a nivel de la platina incisiva se encontró diferencia estadísticamente significativa entre las dos variables de registro (p<0,001). A este nivel el BYC proporcionó registros más retrusivos que IM. Media aritmética (desviaciones estándar) en milímetros: 3,82 (2,1). Conclusión. El sistema de re-gistro con cubetas rodete acrílicas y BYC incorpora-do a las mismas proporciona un registro intermaxi-lar más retrusivo que IM en adultos mayores des-dentados totales cuando se realizan dichos registros en la misma sesión que la impresión definitiva (AU)

Objective: To compare the anteroposterior discre-pancy measured at the level of the incisal plate of 2 methods of intermaxillary registration in the same session as the definitive impression in fully edentu-lous older adults. Materials and methods. Twenty pa-tients (n=20) with an average age of 70 years were included in the study. On each of them, intermaxillary recordings were obtained with acrylic rims trays: one with manual induction (MI) and the other with a self-induced system and single central support using a curved recording palatal surface (BYC). The models were mounted in a Whip Mix model 2240 articula-tor to which an Orthodent graph paper device was added, at the level of the incisal plate, to record the di-fferences between the positions obtained. Statistical analysis was carried out by calculating confidence intervals (95%) for mean differences and T-student for paired data (significance level: α<0.05). Results. On the mesiodistal plane at the level of the incisal plate, a statistically significant difference was found between the two recording variables (p<0.001). At this level the BYC provided more retrusive recordings than MI. Arithmetic mean (standard deviations) in mi-llimeters: 3.82 (2.1). Conclusions. The registration system with acrylic rim trays and BYC incorporated into them provides a more retrusive intermaxillary registration than MI in fully edentulous older adults when such registrations are made in the same ses-sion as the final impression.(AU)

Comparação de diferentes metodologias para análise histométrica de implantes: estudo em ratos / Comparison of different methodologies for histometric analysis of implant. Study in rat

Introdução: Diferentes metodologias tem sido utilizadas para avaliação histológica da osseointegração, levando a diferentes resultados. Objetivo: O objetivo é comparar diferentes metodologias de análise histomorfométrica da osseointegração de implantes com diferentes superfícies, instalados em tíbias de ratos. Material e método: 24 ratos foram aleatoriamente divididos em 3 grupos (n = 8) para a instalação dos implantes. Esses grupos foram divididos de acordo com o tipo de implante instalado na tíbia: Grupo Hidrofílico - HFL (instalação de implante com superfície modificada por jateamento de óxidos e ataque ácido e mantida em solução de cloreto de sódio), Grupo Hidrofóbico - HFB (instalação de implante com superfície modificada por jateamento de óxidos e ataque ácido) e Grupo Usinado - U (instalação de implante com superfície usinada). No período de 45 dias após os procedimentos cirúrgicos de instalação dos implantes, os animais foram submetidos à eutanásia, e as tíbias foram removidas, sendo realizado o processamento histológico para amostras não descalcificadas. Após a obtenção das lâminas, foi realizada a análise histomorfométrica para avaliar as porcentagens de contato osso-implante (% BIC) e da área óssea entre as espiras (% BBT). As mensurações foram realizadas em duas diferentes regiões: 1) as roscas do implante na região do osso cortical e 2) todas as roscas do implante inseridas no osso (cortical e medular). A análise estatística foi feita por meio de ANOVA One-Way, seguida pelo teste de Tukey para análise inferencial dos dados. Resultado: Quando o BIC e o BBT foram analisados de forma independente nas regiões cortical e trabecular/total, observou-se uma diferença no comportamento histológico dos implantes de acordo com o tratamento de superfície. Os implantes HFL apresentaram BIC (%) trabecular 16,85% maior (p = 0,02) do que os implantes HFB e 26,12% maior (p ≤ 0,0001) do que os implantes usinados. Contudo, a região cortical de todos os grupos apresentou valores de BIC cortical significativamente maiores ao redor dos implantes, independentemente da superfície. Conclusão: Os resultados obtidos demonstraram que a formação óssea peri-implantar foi superior nas análises realizadas apenas em osso cortical, se comparados aos valores obtidos na mensuração total (osso cortical somado ao medular). Também foi possível observar que, dentro da mesma superfície, os valores de BIC (%) foram superiores em osso cortical. Em relação às limitações do estudo, pode-se concluir que diferentes metodologias de análise histométrica da osseointegração ao redor de diferentes superfícies de implantes instalados em tíbias de ratos podem interferir nos resultados de osseointegração, independentemente da superfície analisada.

Introduction: Different methodologies were used for histological evaluation of osseointegration, leading to different results. Objective: The objective is to compare different methodologies for histomorphometric analysis of the osseointegration of implants with different surfaces, installed in rat tibias. Material and method: Twenty-four rats were randomly divided into 3 groups (n=8) for implant installation. These groups were divided according to the type of implant that will be installed in the tibia: Hydrophilic Group (installation of an implant with a surface modified by oxide blasting and acid attack and maintained in a sodium chloride solution), Hydrophobic Group (installation of an implant with surface modified by oxide blasting and acid attack) and Machined Group (implant installation with machined surface). Within 45 days after the surgical procedures to install the implants, the animals were euthanized and the tibias were removed, and histological processing was carried out for non-decalcified samples. After obtaining the slides, histomorphometric analysis was performed to evaluate the percentages of bone-implant contact (%BIC) and the bone area between the turns (%BBT). Measurements were carried out in two different regions: 1) the implant threads in the cortical bone region and 2) all implant threads inserted into the bone (cortical and medullary). Statistical analysis was performed using One-Way ANOVA followed by Tukey's test for inferential data analysis. Result: The BIC and BBT were analyzed independently in the cortical and trabecular/total regions, a difference was observed in the histological behavior of the implants according to the surface treatment. HFL implants showed trabecular BIC (%) 16.85% higher (p=0.02) than HFB implants and 26.12% higher (p≤0.0001) than machined implants. However, the cortical region of all groups showed significantly higher cortical BIC values around the implants, regardless of the surface. Conclusion: the results obtained demonstrated that peri-implant bone formation was superior in analyzes carried out only on cortical bone, compared to the values obtained in the total measurement (cortical bone plus medullary bone). It was also possible to observe that, even within the same surface, the BIC(%) values were higher in cortical bone. Within the limitations of the study, it can be concluded that different methodologies for histometric analysis of osseointegration around different surfaces of implants installed in rat tibias can interfere with the results of osseointegration regardless of the surface analyzed

Assessment of quality of life in total edentulous patients rehabilitated with implants and fixed prosthesis

Aim: Tooth loss is very prevalent in Brazil, reflecting high demand for dental services, especially those related to oral rehabilitation. This study aimed to assess the quality of life in total edentulous patients rehabilitated with implants and fixed prosthesis. Methods: Thirty-two patients were evaluated before and after rehabilitation with dental implants and fixed prosthesis using the OHIP-14 questionnaire and the Visual Analogue Scale (VAS) after 6 months follow-up. Results:OHIP-14 revealed a significant improvement after treatment in all seven parameters and in the global score (P < 0.001). VAS presented positive results related to patient satisfaction regarding oral rehabilitation, except for the hygiene of the fixed dentures. Conclusion: At the end of this study, OHIP-14 scores decreased by 50% in most of the questions raised, and VAS presented positive results, except for hygiene of the fixed dentures, presenting an improvement in the quality of life of total edentulous patients after rehabilitation with implants and fixed prosthesis

Manejo odontológico integral de una paciente con disostosis cleidocraneal. Reporte caso / Integral dental management of a patient with cleidocraneal dysplasia. Case report

Introducción: la disostosis cleidocraneal (CCD) es una enfermedad genética rara que compromete el desarrollo óseo normal, causada por la alteración en el gen RUNX2 del cromosoma 6p (brazo corto). Sus consecuencias incluyen alteraciones óseas por anomalías en la osificación intramembranosa que, a su vez, conllevan a modificaciones en el desarrollo de huesos craneales, claviculares, a múltiples efectos sobre el número, erupción y recambio dental, y a dificultades funcionales, además de cambios en la conducta psicosocial por el deterioro en la calidad de vida. Objetivo: describir el manejo integral de una paciente con disostosis cleidocraneal, a través de la revisión de caso clínico y el reporte de hallazgos en su mejoramiento, como consecuencia de tratamientos quirúrgicos, rehabilitación y el apoyo interdisciplinario, aspecto de gran importancia para este tipo de pacientes. Caso clínico: paciente femenina de 31 años con diagnóstico de CCD que asistió a la Unidad Estomatológica de la Universidad de Cartagena ­ Colombia, y fue remitida desde Genética por presentar inconformidad funcional y dolor leve durante la masticación de los alimentos por movilidad dental severa en dientes antero-inferiores; además, manifestó permanencia de órganos dentarios deciduos, la cual fue tratada en fases. Al tratamiento se le dio un enfoque multidisciplinar, lo que mejoró, de forma sustancial, la autopercepción e interrelación de la paciente en la sociedad.

Background: Cleidocranial dysostosis (CCD) is a rare genetic disease that compromises normal bone development, caused by the alteration in the RUNX2 gene of chromosome 6p (short arm), which causes bone alterations due to abnormalities in intramembranous ossification that leads to alterations in the development of cranial and clavicular bones and multiple efects on the number, eruption and dental turnover, which leads to functional difculties, in addition to behavior and alterations in psychosocial behavior and the deterioration of their quality of life, Objective: To describe the comprehensive management of a patient with cranial Cleido dysostosis, through a clinical case review, reporting among the fndings the improvement of the patient through surgical treatments, rehabilitation and interdisciplinary support, of great importance for this type of patient. Clinical case: A 31-year-old female patient with a diagnosis of CCD, who attended the Stomatology Unit of the University of Cartagena - Colombia, referred by the treating geneticist, due to functional discomfort and mild pain during chewing food due to severe dental mobility. in anterior-inferior teeth, also showing permanence of deciduous dental organs, which was treated in phases in which a multidisciplinary approach was given to its management, which substantially improved its self-perception and its interrelation in society.

Oral health and quality of life of the geriatric patient: contexts of autonomy / Salud bucal y calidad de vida del paciente geriátrico: contextos de autonomía

Background: The state of oral health plays an important role in the concept of frailty among the elderly, as they tend to suffer from poor oral health conditions. Objective: The aim of our systematic review is to study the impact of oral health on the quality of life of the geriatric patient in different contexts of autonomy. Material and Methods: A systematic literature review was carried out of which the selection of articles, with publication date between 2008 and 2020 was conducted through computer platforms. The studies were analyzed and evaluated respecting the previously established inclusion criteria. The review corpus consisted of 16 articles, which presented methodological quality. Results: Oral health has an impact on the quality of life of the elderly, both in the context of institutionalization and at a community level. Oral health has an effect on the quality of life of the elderly, namely in the dimensions of physical pain, physical disability, psychological discomfort, functional limitation, psychological and social disability. The higher the level of dependency the lower the oral health which has the greatest impact on quality of life. The presence of periodontitis, dental caries, edentulism, oral lesions and unsuitable dental prostheses result in a worse perception of quality of life. Conclusion: The evidence found in this study reveals that the state of oral health among the elderly influences their quality of life, regardless of the context of autonomy, indicating the need for oral health policies aimed at this specific population.

Fundamento: El estado de salud bucal juega un papel importante en el concepto de fragilidad entre los ancianos, ya que tienden a padecer de malas condiciones de salud bucal. Objetivo: El objetivo de nuestra revisión sistemática es estudiar el impacto de la salud bucal en la calidad de vida del paciente geriátrico en diferentes contextos de autonomía. Material y Métodos: Se realizó una revisión sistemática de la literatura, se seleccionó artículos con fecha de publicación entre 2008 y 2020 a través de plataformas informáticas. Los estudios fueron analizados y evaluados respetando los criterios de inclusión previamente establecidos. El corpus de revisión estuvo compuesto por 16 artículos, que presentaron calidad metodológica. Resultados: La salud bucal tiene impacto en la calidad de vida de los ancianos, tanto en el contexto de institucionalización como a nivel comunitario. La salud bucal tiene un efecto sobre la calidad de vida de los ancianos, concretamente en las dimensiones de dolor físico, discapacidad física, malestar psicológico, limitación funcional, discapacidad psicológica y social. Cuanto mayor es el nivel de dependencia, menor es la salud bucal, lo que tiene un mayor impacto en la calidad de vida. La presencia de periodontitis, caries dental, edentulismo, lesiones bucales y prótesis dentales inadecuadas redundan en una peor percepción de la calidad de vida. Conclusión: Las evidencias encontradas en este estudio revelan que el estado de salud bucal de los ancianos influye en su calidad de vida, independientemente del contexto de autonomía, indicando la necesidad de políticas de salud bucal dirigidas a esa población específica.

Sobrevida, éxito, y efecto en la calidad de vida del tratamiento con sobredentadura mandibular en el Servicio de Especialidades Dentales, Hospital Clínico San Borja Arriarán, Chile: estudio clínico prospectivo de 11 casos. Parte I / Survival, success, and effect on the quality of life of the treatment with mandibular overdenture in the Dental Specialties Service, Hospital Clínico San Borja Arriarán, Chile: prospective clinical study of 11 cases. Part I

RESUMEN: En los hospitales públicos chilenos, los pacientes desdentados mandibulares pueden ser tratados con una Sobredentadura-Mucosoportada, Implanto-Retenida (SMIR). Para tal fin, se adaptaron los lineamientos del plan piloto "Programa de Prestaciones Valoradas. Odontología 2012 Ministerio de Salud", en ausencia de una Guía Ministerial. El objetivo de esta serie de casos fue evaluar si la implementación y adaptación del plan piloto del tratamiento con SMIR mejoró la calidad de vida de los pacientes. Se evaluaron sobrevida, éxito implantario, e impacto en la calidad de vida. Los resultados indican una sobrevida y éxito implantario del 100% y una mejora de la calidad de vida. Conclusión: el tratamiento con SMIR mejora la calidad de vida de los pacientes, en el servicio público.

ABSTRACT: In Chilean public hospitals, patients with Complete Edentulous Mandible are treated with Implant-Retained and Mucosa-supported Overdenture (IRMO). For this purpose, the guidelines of the pilot plan "Valued Benefits Program in Dentistry 2012, Ministry of Health" have been adapted. The aim of this study was to evaluate whether these adapted protocols have been successful. We measured implant survival and success, and impact on quality of life with OHIP-14 criteria. Results indicate 100% implant survival and success and improved quality of life. Conclusion: IRMO improves patients' quality of life in public services.

Application evaluation of prefabricated rigid connecting bar in implants immediate impression preparation of edentulous jaw / 北京大学学报(医学版)

OBJECTIVE@#To compare the operation complexity and accuracy of traditional splint impression technique and impression technique with prefabricated rigid connecting bar system for full-arch implants-supported fixed protheses in vitro.@*METHODS@#Standard mandibular edentulous model with six implant analogs was prepared. The implants were placed at the bone level and multiunit abutments screwed into the implants. Two impression techniques were performed: the traditional splint impression technique was used in the control group, and the rigid connecting bar system was used in the test group. In the control group, impression copings were screwed into the multiunit abutments and connected with autopolymerizing acrylic resin. Open tray impression was fabricated with custom tray and polyether. In the test group, cylinders were screwed into the multiunit abutments. Prefabricated rigid bars with suitable length were selected and connected to the cylinders with small amount of autopolymerizing acrylic resin, and open tray impression was obtained. Impression procedures were repeated 6 times in each group. The working time of the two impression methods were recorded and compared. Analogs were screws into the impressions and gypsum casts were poured. The gypsum casts and the standard model were transferred to stereolithography (STL) files with model scanner. Comparative analysis of the STL files of the gypsum casts and the standard model was carried out and the root mean square (RMS) error value of the gypsum casts of the control and test groups compared with the standard model was recorded. The trueness of the two impression techniques was compared.@*RESULTS@#The work time in the test group was significantly lower than that in the control group and the difference was statistically significant [(984.5±63.3) s vs. (1 478.3±156.2) s, P < 0.05]. Compared with the standard model, the RMS error value of the implant abutments in the test group was (16.9±5.5) μm. The RMS value in the control group was (20.2±8.0) μm. The difference between the two groups was not significant (P>0.05).@*CONCLUSION@#The prefabricated rigid connecting bar can save the chair-side work time in implants immediate loading of edentulous jaw and simplify the impression process. The impression accuracy is not significantly different from the traditional impression technology. The impression technique with prefabricated rigid connecting bar system is worthy of clinical application.

Fréquence et déterminants de l'édentement partiel des adultes dans les institutions médicodentaires de Kinshasa, en République Démocratique du Congo

Contexte et objectifs. La perte de dents appelée édentement affecte la mastication, la parole, l'esthétique, le comportement social et la qualité de vie. L'objectif de la présente étude était d'évaluer la fréquence et les determinants de l'édentement partiel (EP) chez les adultes dans les institutions médico-dentaires de Kinshasa. Méthodes. C'était étude transversale analytique conduite entre octobre 2019 et juillet 2021 dans quelques institutions médico-dentaires de Kinshasa auprès des patients adultes congolais. Les variables d'intérêts étaient la fréquence et les causes de l'EP, les facteurs sociodémographiques et la présence du diabète et/ou de l'hypertension artérielle (HTA). Les déterminants de l'EP ont été recherchés par l'analyse de régression logistique multivariée. Résultats. Quatre cent vingt sept patients ont été inclus. Leur âge moyen était de 37,9 ±15,4 ans. La fréquence de l'EP était de 71%. Seul le statut diabète et/ou hypertension a été indépendamment associé à l'EP (ORa : 23,8 ; IC 95% : 3,2-174,8). Conclusion. La fréquence de l'EP était très élevée chez les adultes, influencée par la presence du diabète et/ou HTA.

Influência da qualidade das próteses totais na prevalência de disfunção temporomandibular / Influence of quality of total prostheses on the prevalence of temporomandibular disorder

Introduction Temporomandibular disorder (TMD) involves the mastication and temporomandibular articulation muscles. Completely toothless patients with prostheses should be thoroughly assessed since edentulism causes damage that can lead to TMD onset. Objective This study aims to assess the effect of the technical quality of total prostheses (TPs) on TMD occurrence in patients with bimaxillary TPs. Material and method 154 patients responded to a questionnaire to obtain personal data, information regarding prostheses, anamnestic index for TMD, and the prosthesis quality index. Result Of the 154 patients examined, 64 (41.6%) had no TMD, 61 (39.6%) had mild TMD, 23 (14.9%) moderate, and only 6 (3.9%) showed severe TMD. As for the quality of total prosthesis, 78 (50.6%) completely toothless individuals had satisfactory TPs while 76 (49.4) presented unsatisfactory prostheses. Regarding the time using total prosthesis, around 50% of individuals with up to 10 years use presented some degree of TMD and 70% of individuals with over 10 years presented TMD. Conclusion Considering the methodology used and the population studied, we conclude that the quality of the TPs did not influence the incidence of TMD.

Introdução A disfunção temporomandibular (DTM) é uma desordem que envolve os músculos da mastigação e da articulação temporomandibular. Pacientes desdentados totais e que utilizam protéses requerem uma avaliação criteriosa, já que o edentulismo leva a prejuízos que podem contribuir para o aparecimento de DTM. Objetivo O objetivo deste presente estudo foi avaliar o efeito da qualidade técnica das próteses totais (PTs) na incidência de DTM em pacientes portadores de PTs bi-maxilares. Material e método Foi aplicado um questionário a 154 pacientes contendo os dados pessoais, o histórico das próteses, o índice anamnésico para DTM e o índice de qualidade de prótese. Resultado Dos 154 pacientes examinados, 64 (41,6%) estavam livres de DTM, 61 (39,6%) possuíam DTM leve, 23 (14,9%), moderada e apenas 6 (3,9%) mostravam DTM severa. Quanto à qualidade da prótese total, 78 (50,6%) desdentados totais portavam PTs satisfatórias e 76 (49,4) estavam com próteses insatisfatórias. Quanto ao tempo de uso da prótese total, cerca de 50% dos indivíduos com até 10 anos de uso apresentaram algum grau de DTM e 70% dos indivíduos com mais de 10 anos acusaram a presença de DTM. Conclusão Considerando-se a metodologia empregada e a população estudada, pôde-se concluir que a qualidade das PTs não influenciou na presença de DTM.

Tooth Loss, Sociodemographic Conditions and Oral Health-Related Quality of Life in the Elderly

Abstract Objective: To verify the association between impacts produced by tooth loss and sociodemographic variables in the oral health-related quality of life (OHRQoL) in the elderly. Material and Methods: This is an analytical cross-sectional study carried out in the municipality of Vitória/ES, Brazil, which sample was composed of 402 older adults. The Oral Health Impact Profile (OHIP-14) was used to measure the individuals' OHRQoL. For data analysis, descriptive and bivariate analyses were performed using the Fisher's exact test and the Mantel-Haenzsel test to assess the effects of combined dimensions. The significance level adopted was 5%. To assess the strength of association between independent variables and dimensions, Odds-Ratio (OR) with 95% confidence interval (CI) was calculated. Results: The prevalence of negative impact on OHRQoL in the elderly was 32.6%. The greatest impact perception was found in individuals with up to 10 years of schooling (p=0.021 and OR=1.602), with need for removable partial dentures (p=0.000 and OR=2.873) and those who did not accept the loss of dental elements (p=0.000 and OR=3.064). Conclusion: Older female adults with socioeconomic class C/D-E, with up to 10 years of schooling, who lost 11 or more teeth, who declared the need for removable partial dentures, suffered greater impacts caused by tooth loss on OHRQoL.

Evaluating edentulism and frailty in a group of elderly people treated at the dental clinic of Universidad San Martín de Porres in Lambayeque, Peru / Condiciones de edentulismo y fragilidad en un grupo de personas mayores que acudieron a la clínica odontológica de la Universidad San Martín de Porres de Lambayeque, Perú

Introduction: Dentistry should contribute to achieving healthy aging based on the identification of the well-being and oral health needs of the elderly. Objective: To evaluate the conditions of edentulism and frailty in a group of elderly people treated at the dental clinic of Universidad San Martín de Porres in Lambayeque, Peru, between the years 2016 and 2018. Material and Methods: An observational, descriptive, retrolective, and cross-sectional study was conducted. Two hundred and seven medical records that included an odontogram were randomly selected to identify cases of total or partial edentulism according to the Kennedy classification. The files were assessed with Fried's test to evaluate the conditions of frailty. The association between variables was estimated by means of a significance analysis using the Chi square test. Results: There was a statistically significant difference between edentulism in both jaws and conditions of frailty (p<0.05). An association of edentulism with physical inactivity and weakness was also demonstrated. Additionally, a statistically significant difference between degrees of edentulism was observed regarding poor diet (p<0.05). Conclusion: The absence of teeth in the elderly acts as a risk factor leading to negative changes in diet, weight, and physical activity. These changes may be associated with frailty, as masticatory insufficiency results in a poor diet and subsequent weakness.

Introducción: El aporte de la Odontología debe contribuir a lograr un envejecimiento saludable, basado en la identificación de las necesidades de bienestar y salud bucal de las personas mayores. Objetivo: Evaluar la condición de edentulismo y de fragilidad en un grupo de personas mayores atendidas en la Clínica Odontológica de la Universidad San Martín de Porres de Lambayeque, entre los años 2016 y 2018. Material y Métodos: Se diseñó un estudio observacional, descriptivo, retrolectivo y transversal, seleccionando de manera aleatoria 207 historias clínicas que incluyeron un odontograma para identificar casos de edentulismo total o parcial de acuerdo a la clasificación de Kennedy: mientras que para evaluar las condiciones de fragilidad fueron revisadas las fichas con el test de Fried. Diferencias entre variables fueron evaluadas con un análisis de significancia mediante la prueba Chi cuadrado. Resultado: Se mostró una diferencia estadísticamente significativa entre edentulismo en ambos maxilares y condiciones de fragilidad (p<0,05). Se evidenció además asociación de edentulismo con inactividad física y debilidad; observándose adicionalmente una diferencia estadísticamente significativa entre grados de edentulismo en relación a la mala alimentación (p<0,05). Conclusion: La ausencia de dientes en las personas mayores funge como un factor de riesgo que contribuye a cambios desfavorables en la dieta, el peso y la actividad física, mismos que se asocian con la fragilidad, donde la insuficiencia masticatoria puede conducir a una deficiente alimentación y la consecuente debilidad.