Orientações de manutenção e higienização de prótese fixa total implantossuportada: revisão de literatura / Guidelines for maintenance and cleaning of implantssupported total fixed prosthesis: literature review

A evolução dos tratamentos em implantodontia possibilitou uma mudança nos tratamentos reabilitadores para pacientes edêntulos, tornando possível a colocação de próteses fixas, que proporcionam maior qualidade de vida para estes pacientes. Para que estas próteses tenham bom desempenho e longevidade satisfatórios é essencial que se mantenha um padrão adequado de higienização bucal e manutenção profissional. Assim, o objetivo deste trabalho foi realizar uma revisão de literatura a respeito dos principais recursos disponíveis para higienização e manutenção das próteses totais fixas sobre implante (protocolo de Branemark), tanto nos cuidados domiciliares dos pacientes quanto no atendimento profissional do cirurgião dentista. Foi realizada uma busca eletrônica, não sistemática, nas bases de dados Lilacs, Pubmed/Medline, Scielo e ScienceDirect, cruzando-se os seguintes descritores: "Higiene Oral"; "Implantes Dentários"; "Implantação Dentária"; "Manutenção"; "Prótese Dentária Fixada por Implante" e "Prótese Dentária". Foram consultados artigos de revisão de literatura, revisão sistemática, meta-análise, estudos clínicos randomizados, além de livros pertinentes ao assunto, publicados no período de 1995 a 2022.Verificou-se na literatura disponível que os principais instrumentos indicados para uso domiciliar são escova dental, fio dental, escova interdental, irrigador oral, dentifrício e enxaguatório. No atendimento profissional em consultório odontológico deve ser dispendida atenção especial às instruções passadas ao paciente e também fazer o possível para motivar e encorajar o seu engajamento na rotina de higienização, além do acompanhamento periodontal, possíveis substituições de parafusos e instalação de placa oclusal estabilizadora, quando necessário. Manter uma higiene oral adequada é essencial para o sucesso das próteses fixas sobre implantes e o cirurgião dentista desempenha um papel crucial não apenas ao realizar o acompanhamento periódico do paciente, mas também ao sugerir os instrumentos mais apropriados, instruir sobre a higiene oral adequada e motivar o paciente a manter a saúde bucal satisfatória(AU)

The evolution of treatments in implantology has enable a change in rehabilitation treatments for edentulous patients, making it possible to place fixed prostheses that provide a better quality of life for these patients. In order to ensure good performance and satisfactory longevity, it is essential to maintain an appropriate standard of oral hygiene and professional maintenance. Thus, the objective of this work was to conduct a literature review on the main resources available for cleaning and maintenance of complete fixed prostheses on implants (Branemark protocol), both in the patients' home care and in the professional care provided by the dentist. A nonsystematic electronic search was carried out in the Lilacs, Pubmed/Medline, Scielo, and ScienceDirect databases, crossing the following descriptors: "Oral Hygiene"; "Dental Implants"; "Dental Implantation"; "Maintenance"; "Dental Prosthesis, ImplantSupported"; and "Prosthodontics". Literature review articles, systematic reviews, meta-analyses, randomized clinical studies, and relevant books on the subject published from 1995 to 2022 were consulted. The literature available indicates that the main instruments recommended for home care are toothbrush, dental floss, interdental brush, oral irrigator, toothpaste, and mouthwash. In the professional dental office, special attention should be given to the instructions given to the patient, as well as to motivate and encourage their engagement in the hygiene routine, in addition to periodontal monitoring, possible screw replacements, and installation of an occlusal splint when necessary. Maintaining adequate oral hygiene is essential for the success of fixed prostheses on implants, and the dentist plays a crucial role, not only in providing periodic patient follow-up, but also in suggesting the most appropriate instruments, instructing on adequate oral hygiene, and motivating the patient to maintain satisfactory oral health(AU)

Efectividad del modelo Individual Placement and Support en el trastorno mental grave: revisión sistemática / Effectiveness of the Individual Placement and Support model in severe mental disorder: a systematic review / Efetividade do modelo Individual Placement and Support em transtorno mental grave: uma revisão sistemática

Resumen Introducción El empleo es uno de los principales determinantes del estado general de salud. Para las personas que padecen un trastorno mental grave obtener un empleo supone un punto crucial en su recuperación por lo que la búsqueda, adquisición y mantenimiento de un empleo son objetivos fundamentales para las intervenciones de terapia ocupacional en esta población. Objetivos Conocer los resultados de las intervenciones de terapia ocupacional basadas en el modelo Individual Placement and Support sobre la inserción laboral y la calidad de vida de personas con trastorno mental grave. Método Se empleó la declaración PRISMA según los criterios establecidos por Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Las búsquedas se realizaron en las bases de datos: PubMed, Web of Science, Scopus y Cochrane. El riesgo de sesgo se evaluó con la herramienta Review Manager Web. El protocolo de revisión se registró en PROSPERO: CRD42023418778. Resultados Se incluyeron 12 estudios. El rango de edad de los participantes oscila entre los 18 y 53 años, predominando el género masculino. Los resultados vocacionales demuestran que la tasa de empleo fue al menos un 20% mayor en el grupo de apoyo individualizado al empleo que en el grupo control. No se encontraron hallazgos concluyentes para los resultados no vocacionales. Conclusión Los resultados sugieren que este modelo es efectivo en la inserción laboral de las personas con trastorno mental grave. Son necesarios futuros estudios con mayor rigor metodológico para confirmar la eficacia de este modelo en las variables no vocacionales.

Abstract Introduction Employment is one of the main determinants of general health status. For people suffering from serious mental disorders, obtaining a job is a crucial point in their recovery, which is why finding, acquiring, and maintaining a job are fundamental objectives for occupational therapy interventions with this population. Objective Find out the results of occupational therapy interventions based on the Individual Placement and Support model in the labor market insertion and quality of life of people with severe mental disorders. Method A review was conducted according to the criteria established by Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Searches were carried out in the following databases: PubMed, Web of Science, Scopus, and Cochrane. Risk of bias was assessed using the Review Manager Web tool. The review protocol was registered at PROSPERO: CRD42023418778. Results Twelve studies were included. Participants ranged in age from 18 to 53 years, with predominance of males. Vocational results show that the employment rate was at least 20% higher in the individualized employment support group than in the control group. No conclusive findings were found for non-vocational outcomes. Conclusion The results suggest that this model is effective in the employability of people with severe mental disorders. Future studies with greater methodological rigor are needed to confirm the effectiveness of this model in non-professional variables.

Resumo Introdução O trabalho é um dos principais determinantes do estado geral de saúde. Para pessoas que sofrem de transtorno mental grave, conseguir um emprego é um ponto crucial em sua recuperação, razão pela qual encontrar, adquirir e manter um emprego são objetivos fundamentais para intervenções de terapia ocupacional nessa população. Objetivo Conhecer os resultados das intervenções de terapia ocupacional baseadas no modelo Individual Placement and Support sobre a inserção no mercado de trabalho e a qualidade de vida de pessoas com transtorno mental grave. Método Uma revisão foi conduzida de acordo com os critérios estabelecidos pelo Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). As buscas foram realizadas nos seguintes bancos de dados: PubMed, Web of Science, Scopus e Cochrane. O risco de viés foi avaliado usando a ferramenta Review Manager Web. O protocolo de revisão foi registrado no PROSPERO: CRD42023418778. Resultados Doze estudos foram incluídos. A idade dos participantes variou de 18 a 53 anos, com predominância do sexo masculino. Os resultados vocacionais demostram que a taxa de emprego foi pelo menos 20% maior no grupo de apoio individualizado ao emprego do que no grupo controle. Não foram encontrados achados conclusivos para os resultados não vocacionais. Conclusão : Os resultados sugerem que esse modelo é eficaz na integração ocupacional de pessoas com transtorno mental grave. São necessários estudos futuros com maior rigor metodológico para confirmar a eficácia desse modelo em variáveis não profissionais.

Total removal of the buccal flange in maxillary prosthetic preparation: a necessity?: case report / Remoção total do flange vestibular no preparo protético de maxila: uma necessidade?: relato de caso

ABSTRACT Fixed implant-supported complete maxillary dentures aim to rehabilitate aesthetic, phonetic, and functional aspects of edentulous arches. A previous prosthetic preparation without a flange in the anterior sector makes it possible to evaluate the labial support and the existing space for the future prosthesis. Thus, it allows the most appropriate choice of the type of rehabilitation and surgical technique. However, follow-up studies have shown that when proceeding this way, problems in the posterior sector are still occurring, such as the lack of vertical space for an adequate bar design and concave internal designs, which make access to hygiene difficult. Faced with the problem, the aim of this study is to report a clinical case in which the previous prosthetic preparation included the removal of the flange also from the posterior sector during the teeth try-in and the duplication of this assembly in a transparent multifunctional guide that allowed the visualization of the amount of bone removal needed. The osteotomy, performed before the installation of the implants, provided enough space for the bar, acrylic, and prefabricated denture teeth in the prosthesis that was installed, an important fact considering that this is an area with greater chewing efforts. It also allowed for correct internal design in the prosthesis, which will ensure access to correct hygiene. Based on the analysis of the rehabilitated case, it seems fair to conclude that the total removal of the buccal flange at the time of testing the wax try-in of the teeth and its duplication is a differential in the approach of cases and should always be adopted to ensure a lower margin of error and greater longevity in the proposed rehabilitative treatment.

RESUMO Próteses totais fixas implantossuportadas objetivam reabilitar arcos edêntulos nos aspectos estético, fonético e funcional. Um preparo protético prévio sem flange no setor anterior permite avaliar o suporte labial e o espaço presente para a futura prótese, auxilinado na escolha do tipo de reabilitação e da técnica cirúrgica mais adequada. No entanto, estudos de acompanhamento tem mostrado que ao proceder dessa maneira ainda estão ocorrendo problemas no setor posterior, como falta de espaço vertical para um desenho adequado da barra e desenhos internos côncavos, que dificultam o acesso à higienização. Frente ao problema, o objetivo do presente trabalho é relatar um caso clínico no qual o preparo protético prévio incluiu a remoção do flange também do setor posterior durante a prova dos dentes e a duplicação dessa montagem em um guia multifuncional transparente permitindo a visualização da quantidade de remoção óssea necessária. A osteotomia, realizada antes da instalação dos implantes, proporcionou espaço suficiente para a barra, acrílico e dentes de estoque na prótese que foi instalada, fato importante considerando ser essa uma zona com maiores esforços mastigatórios. Também permitiu a confecção de desenho interno correto na prótese, que garantirá o acesso para correta higiene. Com base na análise do caso reabilitado, parece lícito concluir que a remoção total do flange vestibular no momento da prova dos dentes em cera e sua duplicação é um diferencial na abordagem dos casos e que deveria sempre ser adotada para garantir menor margem de erros e maior longevidade no tratamento reabilitador proposto.

RADIOGRAPHIC EVALUATION OF THE SUCCESS OF IMPLANT-SUPPORTED TOTAL PROSTHESES ON CONICAL EXTERNAL HEXAGON IMPLANTS AND 6-MONTH FOLLOW-UP AFTER INSTALLATION OF THE PROSTHESES

The development of dental implants has revolutionized the rehabilitation possibilities for partially or totally edentulous patients. The long-term success of the dental implant depends on osseointegration and this is achieved by the combination of two essential stabilities: primary and secondary. Implant-supported prostheses are a great evolution for these treatments, positively interfering in the quality of life of the population, as they generate function and aesthetics for the patient. Thus, the present study aimed to radiographically evaluate complete dentures supported by an external hexagon conical implant in the anterior region of the mandible. More specifically, to evaluate the feasibility of using these implants in cortical bone of the mandible, to verify the success rate regarding the significance of peri-implant bone loss and to compare peri-implant bone loss between patients.

Halitosis and Pain Threshold of Peri-Implant Tissues: An Observational Cohort Study

Abstract In this study, we aimed to evaluate the halitosis and pain threshold of the peri-implant soft tissues in individuals rehabilitated with implant-supported prostheses. Forty-eight subjects were divided into four groups (n = 12) according to their prosthetic rehabilitation: single-tooth fixed prosthesis, multi-tooth fixed prosthesis, overdentures, and the Brånemark protocol. Halitosis was measured using a halimeter, whereas the pain threshold was measured using Von Frey monofilaments. Measurements were taken before (t0) and 30 days after (t1) placement of healing caps, and at the time of (t2) and 30 days after (t3) prosthetic placement. Halitosis data were analyzed using the chi-square test and Bonferroni correction (p < 0.05). Two-way ANOVA and Tukey's test (p < 0.05) were used to analyze pain threshold data. We noted an association between halitosis and time for the Brånemark protocol [X2(6) = 18.471; p = 0.005] and overdenture groups [X2(6) = 17.732; p = 0.007], and between halitosis and type of prosthesis only at t0 [X2(6) = 12.894; p = 0.045]. The interaction between time and the type of prosthesis significantly interfered with the mean pain threshold values (p = 0.001). At most time points, the majority of participants in each group had clinically unacceptable halitosis. After 30 days of using the prostheses, the overdenture group had a lower pain threshold compared to the Brånemark protocol group.

Resumo Este estudo teve como objetivo avaliar a halitose e o limiar de dor dos tecidos moles peri-implantares em indivíduos reabilitados com próteses implantossuportadas. Um total de 48 indivíduos foram divididos em quatro grupos (n=12), de acordo com as reabilitações: prótese fixa unitária, prótese fixa multidentária, sobredentadura e protocolo de Brånemark. A halitose foi medida com um halímetro, enquanto o limiar de dor foi medido com monofilamentos de von Frey. As medições foram feitas antes (t0) e 30 dias após (t1) a colocação das tampas de cicatrização e no momento (t2) e 30 dias após (t3) a colocação da prótese. Os dados de halitose foram analisados por meio do teste qui-quadrado e correção de Bonferroni (p < 0,05). ANOVA de duas vias e o teste de Tukey (p < 0,05) foram usados para analisar os dados do limiar de dor. Observou-se associação entre halitose e tempo para o protocolo de Brånemark [X2(6) = 18,471; p = 0,005] e grupos overdenture [X2(6) = 17,732; p = 0,007], e entre halitose e tipo de prótese apenas em t0 [X2(6) = 12,894; p = 0,045]. A interação entre o tempo e o tipo de prótese interferiu significativamente nos valores médios do limiar de dor (p = 0,001). Na maioria dos pontos de tempos, a maioria dos participantes de cada grupo apresentava halitose clinicamente inaceitável. Após 30 dias de uso das próteses, o grupo overdenture apresentou menor limiar de dor em comparação ao grupo do protocolo de Brånemark.

Prosthetic rehabilitation with removable dentures positively influences quality of life in older patients: a systematic review / A reabilitação protética com próteses removíveis influencia positivamente a qualidade de vida de pacientes idosos: uma revisão sistemática

OBJECTIVE: This systematic review assessed the effects of prosthetic rehabilitation with removable dentures on oral health-related quality of life (OHRQoL) in older adults. METHODS: A comprehensive electronic search was conducted in the PubMed/MEDLINE, Web of Science, and Cochrane databases to identify randomized clinical trials and prospective clinical studies. The included studies evaluated the effects of prosthetic rehabilitation on OHRQoL in patients whose mean age was > 60 years. The interventions included complete dentures, implant-retained overdentures, and removable partial prostheses, with a minimum follow-up period of 1 month after prosthetic rehabilitation. Patient-reported outcome measures, specifically OHRQoL, were the primary outcome. Risk of bias was assessed using the Cochrane RoB 2 tool for randomized clinical trials and the ROBINS-I tool for prospective clinical studies. RESULTS: Eleven articles were considered eligible for the systematic review. The findings indicated that removable dentures improved various OHRQoL domains, mainly functional limitations and physical and psychological disabilities. Retention, stability, comfort, speech, and masticatory efficiency were significantly better with implant overdentures than complete dentures, leading to higher patient satisfaction and OHRQoL. CONCLUSIONS: This systematic review suggests that prosthetic rehabilitation with removable dentures has a positive influence on OHRQoL in older patients. The findings highlight the beneficial impact of implant overdentures and fixed adhesive prostheses for enhancing functional outcomes and patient satisfaction.

OBJETIVO: Esta revisão sistemática avaliou os efeitos da reabilitação protética com próteses removíveis na qualidade de vida relacionada à saúde bucal (QVRSB) em pacientes idosos. METODOLOGIA: Foi realizada uma pesquisa eletrônica abrangente nas bases de dados United States National Library of Medicine/ Medical Literature Analysis and Retrieval System Online ­ PubMed/MEDLINE, Web of Science e Cochrane para identificar ensaios clínicos randomizados (ECR) e estudos clínicos prospectivos. Os artigos selecionados tiveram como foco avaliar o efeito da reabilitação protética na QVRSB em indivíduos com média de idade superior a 60 anos. As intervenções descritas incluíram próteses totais, overdentures suportadas por implantes e próteses parciais removíveis, com acompanhamento mínimo de um mês após a reabilitação protética. As medidas de resultados relatadas pelos pacientes, especificamente QVRSB, foram o desfecho primário. O risco de viés foi avaliado com a ferramenta Cochrane RoB 2 pare ensaios clínicos randomizados e a ferramenta ROBINS-I para estudos clínicos prospectivos. RESULTADOS: Os resultados mostraram que as próteses dentárias removíveis melhoraram vários domínios da QVRSB, principalmente limitações funcionais e físicas e deficiências psicológicas. A retenção, estabilidade, conforto, fala e eficiência mastigatória foram significativamente melhores com overdentures sobre implantes do que com próteses totais, levando a maior satisfação do paciente e QVRSB. CONCLUSÕES: Esta revisão sistemática sugere uma influência positiva da reabilitação protética com próteses removíveis na QVRSB em pacientes idosos. As descobertas destacam o impacto benéfico das overdentures sobre implantes e das próteses adesivas fixas para melhorar os resultados funcionais e a satisfação do paciente

Prosthetic maintenance assessment for implant fixed complete dentures and implant overdentures: a randomized clinical trial / Avaliação da manutenção protética para próteses totais fixas suportadas por implantes e Overdentures: um ensaio clínico randomizado

Objective: The rehabilitation choice for the edentulous patients usually lies between the fixed and removable prosthetic options. The treatment decisions are affected by many factors where complications and maintenance needs are both considered crucial factors, in addition to the cost effectiveness of the chosen treatment. Material and Methods: This study was applied on 44 edentulous patients, where 22 patient for each group were enrolled in the outpatient clinic of prosthodontics, Cairo University as per a set of eligibility criteria. Four inter-foraminal implants were installed for all eligible participants. Three months later, healing abutments were used for soft tissue preparation prior to the fabrication of the final prosthesis. A prosthetic treatment option was then randomly allocated to obtain two equal groups via computer generated randomization program; Group. A received telescopic implant overdentures, and Group. B received screw retained dentures. All Complications (Screw loosening or fracture, tooth or denture base fracture and mucositis) were reported after overdenture insertion along the follow up period (1, 6, 9 and 12 months respectively). Results: The frequency of the screw loosening for hybrid overdentures where (59.1%) compared to (27.3%) of telescopic prosthesis at 12 months follow up period (p=0.035), mucositis reporting at 6m interval had shown the highest frequency in both groups (Group A (54.5%), Group B (81.8%), (p=0.045), all other reported complications that lack statistical significance either within the same group or between both groups at different time intervals. Conclusion: Both treatment modalities; telescopic implant overdenture and hybrid fixed screw-retained are reliable for restoring the completely edentulous arches, the decision whether to make a fixed or removable implant denture shall be guided with the patient preference together with the dentist assessment in relation (AU)

Objetivo: A escolha da reabilitação para pacientes edêntulos geralmente recai entre próteses fixas e removíveis. As decisões de tratamento são afetadas por muitos fatores onde as complicações e as necessidades de manutenção são consideradas critérios cruciais, além do custo-efetividade do tratamento escolhido. Material e Métodos: Este estudo foi aplicado em 44 pacientes edêntulos, onde 22 pacientes para cada grupo foram matriculados no ambulatório de prótese dentária da Universidade do Cairo de acordo com um conjunto de critérios de elegibilidade. Quatro implantes interforaminais foram instalados para todos os participantes elegíveis. Três meses depois, pilares de cicatrização foram utilizados para preparação dos tecidos moles antes da fabricação da prótese final. Uma opção de tratamento protético foi então alocada aleatoriamente para obter dois grupos iguais por meio de andomização gerada através programa de computador. O Grupo A recebeu overdentures de implantes telescópicos e o Grupo B recebeu dentaduras fixas parafusadas sobre os implantes. Todas as complicações (afrouxamento ou fratura do parafuso, fratura da base do dente ou da prótese e mucosite) foram relatadas após a inserção da overdentures ao longo do período de acompanhamento (1, 6, 9 e 12 meses, respectivamente). Resultados: A frequência do afrouxamento do parafuso para Overdentures híbridas (59,1%) em comparação com (27,3%) da prótese telescópica no período de acompanhamento de 12 meses (p=0,035), o relato de mucosite no intervalo de 6 meses mostrou a maior frequência em ambos os grupos (Grupo A (54,5%), Grupo B (81,8%), p=0,045, todas as outras complicações relatadas foram sem significância estatística dentro do mesmo grupo ou entre os dois grupos em intervalos de tempo diferentes. Conclusão: Ambas as modalidades de tratamento; overdentures sobre implantes telescópicos e próteses híbridas fixas parafusadas são confiáveis para reabilitar as arcadas completamente edêntulas. A decisão de fazer uma prótese fixa ou removível sobre implantes deve ser guiada pela preferência do paciente juntamente com a avaliação do dentista em relação ao estado geral do paciente e sua saúde bucal. (AU)

Influence of diameter in the stress distribution of extra-short dental implants under axial and oblique load: a finite element analysis

Aim: This study evaluated the influence of a wide diameter on extra-short dental implant stress distribution as a retainer for single implant-supported crowns in the atrophic mandible posterior region under axial and oblique load. Methods: Four 3D digital casts of an atrophic mandible, with a single implant-retained crown with a 3:1 crown-to-implant ratio, were created for finite element analysis. The implant diameter used was either 4 mm (regular) or 6 mm (wide), both with 5 mm length. A 200 N axial or 30º oblique load was applied to the mandibular right first molar occlusal surface. The equivalent von Mises stress was recorded for the abutment and implant, minimum principal stress, and maximum shear stress for cortical and cancellous bone. Results: Oblique load increased the stress in all components when compared to axial load. Wide diameter implants showed a decrease of von Mises stress around 40% in both load directions at the implant, and an increase of at least 3.6% at the abutment. Wide diameter implants exhibited better results for cancellous bone in both angulations. However, in the cortical bone, the minimum principal stress was at least 66% greater for wide than regular diameter implants, and the maximum shear stress was more than 100% greater. Conclusion: Extra-short dental implants with wide diameter result in better biomechanical behavior for the implant, but the implications of a potential risk of overloading the cortical bone and bone loss over time, mainly under oblique load, should be investigated

Implant digital impression accuracy using extraoral scanners: a three-dimensional analysis

Aim: To analyze the accuracy of extraoral systems (Ceramill Map400+, AutoScan-DS200+, and E2) in full implantprosthetic rehabilitation three-dimensionally. Methods: A metallic edentulous maxilla with four implants was digitalized by a contact scanner (MDX-40 - Roland, control) and used as a control image to compare with other images generated by three laboratory scanners (10 samples per group). Letters identified all the four components: A and D angled 45º, and B and C parallel. The BioCAD software exported the images (.STL) to compare and verify deviations of the analogs on the X, Y, and Z axes. The nonparametric Kruskal-Wallis test and the two-way ANOVA on ranks with a post hoc Tukey test analyzed the data with 5% significance. Results: No statistical differences were observed in the accuracy between the extraoral scanners (p=0.0806). However, when analyzing only the components, component D was more accurate when scanned with Ceramill Map400+ compared with AutoScan DS200+ (p<0.001) and with E2 (p=0.002). Conclusions: All extraoral systems assessed showed digitalization accuracy but with more deviations in angled implants. The Ceramill Map400+ scanner showed the best results for the digital impression of a complete arch

Transición de prótesis removible a rehabilitación fija de arco completo sobre implantes: Impacto en el perfil facial. Reporte de caso

El perfil facial de un paciente con prótesis total removible podría no ser óptimo cuando el paciente tiene rebordes óseos conservados tridimensionalmente, planteando la necesidad de una prótesis dentaria y no dentogingival. El objetivo de este reporte es describir la transición y tratamiento de una paciente desdentada maxilar, usuaria de prótesis removible con excesivo soporte labial y disponibilidad ósea favorable. En la planificación se prueban parámetros estéticos mediante una ordenación dentaria sin flanco y en base a esta se planifica una "Cirugía de Implantes Protésicamente Guiada" para rehabilitación fija de arco completo sobre implantes en posiciones 1.6, 1.3, 1.1, 2.1, 2.3 y 2.6. Se concluye que con la técnica descrita se puede realizar una evaluación clínica veraz de la propuesta protésica, lo que se traspasa a la guía radiográfica y quirúrgica. Lo anterior permite consistencia entre planificación, cirugía, provisonalización y prótesis definitiva.

The facial profile of a patient with a complete removable denture may not be optimal when the patient has a three-dimensionally preserved bone ridge, raising the need for a dental rather than dentogingival prosthesis. The objective of this report is to describe the transition and treatment of a maxillary edentulous patient, user of a removable prosthesis with excessive lip support and favorable bone availability. In the planning phase, aesthetic parameters are tested using a dental set-up without flank. Based on this, a "Prosthetically Driven Implant Surgery" is planned for a fixed full-arch implant-supported prosthesis with implants located in 1.6, 1.3, 1.1, 2.1, 2.3 and 2.6. It is concluded that, with the described technique, a truthful clinical evaluation of the prosthetic proposal can be performed, and then transferred to the radiographic and surgical guide. This allows consistency between planning, surgery, provisionalization and final prosthesis.

Comportamento dos tecidos peri-implantares pós- reabilitação unitária em região estética comparando pilares protéticos pré-fabricados versus personalizados / Behavior of peri-implant tissues after unitary rehabilitation in the aesthetic region comparing prefabricated versus customized prosthetic abutments

A estética e estabilidade dos tecidos moles e ósseo ao redor do implante é um componente crítico para o sucesso do implante em longo prazo e pode ser influenciado por fatores como os tipos de conexões protéticas. OBJETIVO: Comparar o comportamento do tecido peri-implantar em reabilitação com coroas implantossuportadas cimentadas na região estética usando um pilar protético pré-fabricado em titânio (GT) e um pilar protético personalizado em zircônia (GZ). METODOLOGIA: Neste estudo longitudinal do tipo ensaio clínico controlado, cego e não randomizado, 30 coroas cimentadas sobre implantes dentários unitários em região estética anterior foram alocados sequencialmente: 15 reabilitados sobre um sistema de implante com pilar protético pré-fabricado em titânio (GT) e 15 sobre um sistema de implantes com pilar protético personalizado em zircônia (GZ). O comportamento do tecido peri-implantar foi avaliado em T0 (início do condicionamento tecidual), T1 (fim do condicionamento tecidual), T2 (7 dias após cimentação final), T3 (6 meses após cimentação final). Índice de Placa Visível (IPV), Índice de Sangramento Gengival (ISG), Sangramento a sondagem (SS), Profundidade de Sondagem (PS), Relação Altura/Largura da papila interdental (AP/LP), Faixa de Mucosa Ceratinizada (MC), Espessura gengival (EG), Fenótipo periodontal (FP), Recessão Gengival (RG), distância radiográfica da crista óssea para o ponto de contato e Pink Esthetic Score (PES) foram avaliados. A análise dos dados foi realizada utilizando os seguintes testes estatísticos: Friedman, Mann-Whitney e Qui- quadrado/Exato de Fisher, com nível de significância de 5%. RESULTADOS: Não houve diferenças estatísticas significativas entre os grupos para nenhum dos parâmetros clínicos periodontais nos tempos avaliados (p>0,05). Entretanto, a análise intragrupo mostrou uma redução estatística no IPV e ISG entre T1 e T2 apenas para o GZ (p<0,05). Houve diminuição significativa entre os tempos T0 e T3 para o parâmetro de EG (1,67 mm - 1,47 mm no GT; 1,70 mm -1,47mm no GZ) e aumento da razão AP/LP (0,56 ­ 0,80 no GT; 0,70-0,83 no GZ) em ambos os grupos (p<;0.001). O PES também aumentou significativamente para ambos os grupos (9 ­ 12 no GT; 7 ­ 12 no GZ) de T0 para T1, mantendo-se elevado nos demais tempos analisados. CONLUSÃO: Os resultados mostraram que os pilares protéticos utilizados não impactaram em diferenças nas variáveis clínicas e estética relacionadas ao comportamento dos tecidos periimplantares ao longo do tempo. Sendo assim, a decisão pela seleção dos componentes para a reabilitação em região estética poderia se basear em aspectos como o custo, fluxo e tempo de trabalho (AU).

The esthetics and stability of the soft tissue and bone around the implant is a critical component to the long-term success of the implant and can be influenced by factors such as the type of prosthetic connections. OBJECTIVE: To compare the behavior of the periimplant tissue of single implant-supported crowns in the anterior aesthetic area using prefabricated titanium prosthetic abutments (GT) and customized zirconia prosthetic abutments (GZ). METHODOLOGY: In this controlled, blinded, non- randomized clinical trial, 30 single cemented crown over anterior implants were sequentially allocated: 15 implants rehabilitated on implant system with a prefabricated titanium prosthetic abutment (GT) and 15 on implant system with customized zirconia prosthetic abutment (GZ). The behavior of the peri- implant tissue was evaluated at T0 (beginning of tissue conditioning), T1 (end of tissue conditioning), T2 (7 days after final cementation), T3 (6 months after final cementation). Visible Plaque Index (VPI), Gingival Bleeding Index (GBI), Bleeding on Probing (BoP), Probing Depth (PD), Interdental Papilla Height/Width Ratio (PH/PW), Keratinized Mucosa Width (KM), Gingival Thickness (PT), Periodontal Phenotype (PF), Gingival Recession (GR), radiographic distance from the bone crest to the contact point and Pink Esthetic Score (PES) were registered. The results were analyzed with the following statistical tests: Friedman, Mann-Whitney and Chi- square/Fisher; Exact test with a significance level of 5%. RESULTS: No statistically significant differences were observed between groups for any of the clinical parameters in any, (p>0.05). However, intragroup analysis showed a statistical reduction in VPI between T1 and T2 only for GZ (p< 0.05). There was a significant decrease between T0 and T3 for GT (1.67 mm - 1.47 mm in GT, and 1.70 mm -1.47 mm in GZ) and increase in the ratio PH/PW (0.56 - 0.80 in GT and 0.70- 0.83 in GZ) in both groups (p<0.0001). PES also increased significantly for both groups (9 ­ 12 in GT and 7 ­ 12 in GZ) from T0 to T1 and remained high in the other periods. CONCLUSION: The results showed that the prosthetic abutments used did not impact differences in clinical and aesthetic variables related to the behavior of peri-implant tissues during the study. Therefore, the decision to select components an aesthetic area should be based on aspects such as cost, workflow and timing (AU).

A política de ressocialização: Um estudo sobre os seus limites no sistema prisional de Minas Gerais / The resocialization policy: A study about its limits in the prison system of Minas Gerais / La política de resocialización: Un estudio sobre sus límites en el sistema penitenciario de Minas Gerais

Introdução: Na sociabilidade capitalista é necessário que o capital atenda a alguns interesses da classe trabalhadora, para que ela esteja em condições objetivas e subjetivas de ser explorada. As políticas públicas aparecem como uma forma de satisfazer alguns desses interesses, e são apresentados como direitos do cidadão. Objetivo: Este artigo empírico teve como objetivo refletir sobre os limites da política pública de ressocialização a partir do sistema prisional mineiro. Métodos: Os dados quantitativos e qualitativos foram coletados por pesquisa documental e observação participante com diário de campo construído in loco durante oito meses. Um levantamento bibliométrico foi realizado para averiguar o que a ciência expressa sobre o fenômeno em tela e o exame do desenvolvimento das categorias. Resultados: Apresentamos as limitações da política pública em cada um dos pilares para a ressocialização, e concluímos que as atividades no cárcere visam alterar as subjetividades das pessoas privadas de liberdade para que elas: i) se comportem como bons trabalhadores e estejam aptos à exploração direta ou indireta do Capital no cárcere; ii) sejam explorados pelo capital em condição de escravidão com a mediação do Estado. Conclusão: Por fim, reivindicamos a participação dos profissionais da área de Terapia Ocupacional que esteja radicalmente comprometido com o processo de ressocialização nesses espaços, pois sabemos que não é suficiente para superar as limitações da política pública, mas se torna uma forma de potencializar a quota parte do mais valor que está sendo devolvida à classe trabalhadora.

Introduction: In capitalist sociability it is necessary that the capital meets some interests of the working class, so that it is in objective and subjective conditions to be exploited. Public policies appear as a way to satisfy some of these interests and are presented as citizens' rights. Objective: This empirical article aimed to reflect on the limits of the public policy of resocialization from the prison system in Minas Gerais. Method: Quantitative and qualitative data were collected by documentary research and participant observation with a field diary built in loco during eight months. A bibliometric survey was conducted to ascertain what science expresses about the phenomenon in question and the examination of the development of the categories. Results: We present the limitations of public policy in each of the pillars for resocialization, and conclude that the activities in prison aim to alter the subjectivities of people deprived of freedom so that they: i) behave as good workers and are fit for direct or indirect exploitation of Capital in prison; ii) are exploited by Capital in a condition of slavery with the mediation of the State. Conclusion: Finally, we claim the participation of professionals in the field of Occupational Therapy who are radically committed to the process of resocialization in these spaces, because we know that it is not enough to overcome the limitations of public policy, but it becomes a way to potentiate the share of the most value that is being returned to the working class.

Introducción: En la sociabilidad capitalista es necesario que el capital responda a algunos intereses de la clase obrera, para que esté en condiciones objetivas y subjetivas de ser explotada. Las políticas públicas aparecen como una forma de satisfacer algunos de estos intereses, y se presentan como derechos de los ciudadanos. Objetivo: Este artículo empírico tiene como objetivo reflexionar sobre los límites de la política pública de resocialización desde el sistema penitenciario de Minas Gerais. Método: Los datos cuantitativos y cualitativos se recogieron mediante una investigación documental y una observación participante con un diario de campo construido in situ durante ocho meses. Se realizó una encuesta bibliométrica para conocer lo que la ciencia expresa sobre el fenómeno en pantalla y el examen del desarrollo de las categorías. Resultados: Presentamos las limitaciones de la política pública en cada uno de los pilares para la resocialización, y concluimos que las actividades en la cárcel tienen como objetivo alterar las subjetividades de las personas privadas de libertad para que: i) se comporten como buenos trabajadores y sean aptos para la explotación directa o indirecta del Capital en la cárcel; ii) sean explotados por el Capital en condición de esclavitud con la mediación del Estado. Conclusión: Por último, reivindicamos la participación de los profesionales del ámbito de la Terapia Ocupacional que están radicalmente comprometidos con el proceso de resocialización en estos espacios, porque sabemos que no basta con superar las limitaciones de las políticas públicas, sino que se convierte en una forma de potenciar la cuota de mayor valor que se está devolviendo a la clase trabajadora.

Research progress on the effect of implant-supported overdentures on residual ridges / 口腔疾病防治

@#With the growing maturity of implant technology, implant overdenture has gradually become a conventional repair method for edentulous patients to restore beauty and function, which improves the quality of life of edentulous patients. This paper reviews the effects of implant factors, attachment factors, occlusal factors and patients' own factors on residual alveolar ridge. Existing studies suggest that when designing denture, doctors first need to consider the oral mucosa and jaw conditions of patients before operation, and select the appropriate size of implant to ensure that sufficient bone remains around the implant; Secondly, when choosing the type of attachment, the number, location and A-P distance of implants should be fully considered, and the inclination of cusp should be properly reduced to avoid the harm of excessive lateral force to alveolar ridge; Finally, regular reexamination should be carried out after operation to maintain longer service time of denture and more sufficient bone mass of edentulous patients. However, there are many factors affecting jaw absorption. In the future, we should further explore many factors, such as patients' habit and frequency of wearing dentures, oral health and nutritional status, systemic diseases and medication.

Research progress on the design of fixed implant-supported prostheses in edentulous jaws / 口腔疾病防治

@#With the aging of the population and the increase in the number of edentulous patients, implant-supported fixed restorations have become more prevalent in clinical treatment. It is necessary to assess the patient's remaining bone and occlusal situation correctly; the upper jaw usually needs 6 to 8 implants, whereas the lower jaw needs 4 to 6 implants. Patients with severe alveolar bone atrophy can adopt the "all-on-4/6" treatment plan, short implants, and zygomatic and pterygomaxillary implants to avoid complex bone grafting and remain cautious when the surgical procedures require more surgical experience. According to the repair methods, the superstructure can be divided into one-piece repair and segmental repair. One-piece repair has a lower implant number, flexible location, and reasonable stress distribution but a high maintenance cost. Sectional repair easily achieves passive placement, convenient cleaning, and maintenance in the late stages, but implants need quantity and high requirements for alveolar bone. However, the requirements for alveolar bone and implant number are high. Mutually protected occlusion with minimal or no cantilever on provisional prosthesis is recommended.

TiRobot-assisted biplane double-supported screw fixation for femoral neck fractures in middle-aged and young patients / 中华创伤骨科杂志

Objective:To investigate the efficacy of biplane double-supported screw fixation in the treatment of femoral neck fractures in the middle-aged and young patients with the assistance of TiRobot.Methods:A retrospective analysis was conducted of the 28 young and middle-aged patients with femoral neck fracture who had been treated by biplane double-supported screw fixation at Department of Traumatic Orthopaedics, Puren Hospital from January 2021 to January 2022. According to the intraoperative use of TiRobot-assistance in the nail placement, they were divided into 2 even groups ( n=14). In the observation group where a TiRobot was used to assist nail placement, there were 6 males and 8 females, with an age of (44.1±8.7) years. In the control group where nail placement was monitored by conventional C-arm fluoroscopy, there were 7 males and 7 females, with an age of (48.8±8.0) years. The 2 groups were compared in terms of operation time, intraoperative fluoroscopy times, intraoperative blood loss, hospitalization time, fracture healing time, postoperative complications and hip function 6 months after operation. Results:There was no significant difference in the preoperative general data between the 2 groups, showing comparability ( P>0.05). The operation time, intraoperative fluoroscopy times, intraoperative blood loss and hospitalization time in the observation group were significantly less than those in the control group [(66.5±3.7) min versus (77.1±3.9) min, (12.8±1.6) times versus (18.7±2.5) times, 3.5 (2.8, 4.0) mL versus 26.0 (24.0, 27.3) mL, (9.4±1.2) d versus (11.3±1.2) d] ( P< 0.05). During the follow-up period, the fractures healed well in both groups with no obvious complications. The fracture healing time in the observation group was (6.1±1.2) months, insignificantly shorter than that in the control group [(6.3±1.1) months] ( P>0.5). The Harris hip score 6 months after operation in the observation group (92.6±2.7) was significantly higher than that in the control group (90.6±1.9) ( P< 0.05). Conclusions:In the treatment of young and middle-aged patients with femoral neck fracture, the biplane double-supported screw fixation assisted by a TiRobot can shorten operation time and hospitalization time, and reduce the intraoperative fluoroscopy times and intraoperative blood loss for the patients, more conducive to the functional recovery of the hip joint, leading to better surgical efficacy than the nail placement monitored by conventional C-arm fluoroscopy.

Does the Use of Surface Electromyography Could Improve Quality of Life among Patients Rehabilitated by Mandibular Overdentures on Different Attachments?

Abstract Objective: To analyze and compare changes of quality of life parameter among dental patients rehabilitated by the implant-supported overdentures with different attachment systems. Material and Methods: Forty-eight patients were recruited as a study cohort. The implant placement procedure was based on the results obtained by CBCT scanning and individualized surgical templates manufactured for correct implant placement. Each individual received two k3Pro Implants (Sure Type with 4.0 or 4.5 mm in diameter) at the intraforaminal area due to standard protocol of implantation provided by the manufacturer under local anesthesia. All patients were distributed between two groups based on the fact of using either Locator- or ball-attachments. Rank correlation was measured using Spearman correlation coefficient, while linear correlation was evaluated by Pearson correlation coefficient. Results: No statistically meaningful differences were noted regarding patients' distribution among groups considering age (p>0.05) and gender (p>0.05). Provided patient-level analysis demonstrated that increase of conventional full denture service time was positively correlated with escalation of OHIP-EDENT scores. The most prominent inter-correspondences were noted specifically between longevity of denture service and elevation of scores within "Functional limitation" (r=0.61; p<0.05), "Physical pain" (r=0.51; p<0.05) and "Physical disability" (r=0.57; p<0.05) subdomains. No statistically argumented regressions were noted between increase tendency of OHIP-EDENT scores and gender (p>0.05) or age (p>0.05) parameters. Conclusion: Significant improvements of quality of life measured with OHIP-EDENT were noted for both types of attachments compared to the pre-treatment situation independently of additionally provided surface electromyography-based alignment.

Prosthesis and implant survival in immediately loaded full arch restorations using fiber-reinforced versus non-reinforced temporary frameworks: a randomized clinical trial / Sobrevivência de próteses e implantes em restaurações de arcada completa com carga imediata usando estruturas temporárias reforçadas com fibra versus estruturas temporárias não reforçadas: um ensaio clínico randomizado

Objective: To evaluate and compare prosthesis and implant survival in case of interim fixed complete dentures reinforced with fiber resin frameworks versus those that were not reinforced with any framework in case of immediately loaded full arch restorations in completely edentulous patients. Material and Methods: Thirty completely edentulous patients were randomly allocated into two parallel arm groups. Non-reinforced control group in which patients received non-reinforced all-on-four immediately loaded fixed complete denture and Fiber reinforced group in which patients received all-on-four fixed complete denture supported with glass-fiber reinforced resin framework. Prosthesis and implant survival were clinically evaluated after 4 months follow up period. Results: A statistically significant difference for prosthesis (p = 0.032) and implant survival (p = 0.031) was found between both groups. The fiber-reinforced group showed 100% prosthesis survival and 95% implant survival. On the other hand, the non-reinforced group showed 73.3% prosthesis survival and 81.1% implant survival. Conclusion: Based on the findings of this study, it can be concluded that strengthening the fixed full arch restorations with fiber reinforced frameworks can help overcoming the problem of interim prosthesis fracture during the osseointegration period when used for immediate loading in completely edentulous patients. It can also improve the survival of the immediately loaded implants. (AU)

Objetivo : Avaliar e comparar a sobrevivência de próteses e implantes no caso de próteses totais fixas provisórias reforçadas com estruturas de resina de fibra versus aquelas que não foram reforçadas com nenhuma estrutura no caso de restaurações de arcada completa com carga imediata em pacientes completamente desdentados. Material e Métodos : Trinta pacientes completamente desdentados foram alocados aleatoriamente em dois grupos de braços paralelos. Grupo controle não reforçado, no qual os pacientes receberam prótese total fixa (all-on-four) não reforçada, com carga imediata e grupo reforçado com fibra, no qual os pacientes receberam prótese total fixa (all-on-four), suportada com estrutura de resina reforçada com fibra de vidro. A sobrevivência da prótese e do implante foi avaliada clinicamente após 4 meses de acompanhamento. Resultados : Foi encontrada diferença estatisticamente significante para prótese (p=0,032) e sobrevivência do implante (p=0,031) entre os dois grupos. O grupo reforçado com fibra apresentou 100% de sobrevivência da prótese e 95% de sobrevivência do implante. Por outro lado, o grupo não reforçado apresentou 73,3% de sobrevivência da prótese e 81,1% de sobrevivência do implante. Conclusão: Com base nos achados deste estudo, pode-se concluir que o fortalecimento das restaurações fixas de arcada completa com estruturas reforçadas com fibras pode ajudar a superar o problema da fratura da prótese provisória durante o período de osteointegração quando usada para carga imediata em pacientes completamente desdentados. Também pode melhorar a sobrevivência dos implantes carregados imediatamente (AU).

Bone evaluation of single edentulous areas of maxilla: short communication / Avaliação óssea de regiões maxilares candidatas à reabilitação unitária implantossuportada: uma comunicação curta

Objective: Evaluate the height and bone thickness in healed sites of single implant areas. Materials and Methods:In this cross-sectional study, cone-beam computed tomography (CBCT) images of single edentulous areas of maxilla of patients who needed aesthetic single implant rehabilitations were evaluated for measure the height and thickness using an implant planning software. Data were statistically analyzed using the Mann-Whitney and Pearson correlation test, considering the time, reason and region of tooth loss. For all tests, a p-value <0.05 was considered significant. Results: 48 patients with single tooth loss were included. The statistical analysis demonstrated that reason for the loss was not related to height or bone thickness. Bone thickness was statis-tical significant higher in the posterior region. For the anterior region, the bone thickness was significantly higher when the tooth was lost within 5 years. Pearson correlation test showed a moderate negative signifi-cant correlation between time of tooth loss and bone thickness in anterior region. Conclusion: Reason for tooth loss had no influence on the bone measurements of the residual ridge. In contrast, bone thickness may vary according to the region of tooth loss. The time of tooth loss and bone thickness in the anterior region were inversely proportional. Registration number at https://ensaiosclinicos.gov.br/rg/RBR-5cnyjj.

Objetivo: Avaliar a altura e espessura óssea em sítios unitários cicatrizados. Materiais e Métodos: Neste estudo transversal, imagens de tomografia computa-dorizada de feixe cônico (TCFC) de regiões edêntulas unitárias maxilares de pacientes candidatos a reabilitação unitária implantossuportada foram mensuradas em relação à altura e espessura óssea usando um software de planejamento de implante. Os dados foram analisados estatisticamente por meio do teste Mann-Whitney e de correlação de Pearson, considerando o tempo, o motivo e região da perda dentária. Para todos os testes, um valor de p <0,05 foi considerado significativo. Resultados: Foram incluídos 48 pacientes com perda dentária unitária. A análise estatística demonstrou que o motivo da perda dentária não influenciou na altura ou na espessura óssea. A espessura óssea foi estatisticamente maior na região posterior. Para a região anterior, a espessura óssea foi significativamente maior quando o dente foi perdido em até 5 anos. O teste de correlação de Pearson demonstrou uma correlação significativa negativa moderada entre o tempo de perda do dente e a espessura óssea na região anterior. Conclusão: O motivo da perda dentária não influenciou nas medidas ósseas do rebordo residual. Em contraste, a espessura do osso pode variar de acordo com a região da perda dentária. O tempo de perda dentária e a espessura óssea da região anterior foram inversamente proporcionais. Número de registro em https://ensaiosclinicos.gov.br/rg/RBR-5cnyjj

Marginal misfit of heat-pressed milled wax-pattern and CAD/CAM crowns and its effect on stress distribution in implant-supported rehabilitations

Aim: To compare the marginal fit of lithium disilicate CAD/CAM crowns and heat-pressed crowns fabricated using milled wax patterns, and evaluate its effect on stress distribution in implantsupported rehabilitation. Methods: A CAD model of a mandibular first molar was designed, and 16 lithium disilicate crowns (8/group) were obtained. The crown-prosthetic abutment set was evaluated in a scanning electron microscopy. The mean misfit for each group was recorded and evaluated using Student's t-test. For in silico analysis, a virtual cement thickness was designed for the two misfit values found previously, and the CAD model was assembled on an implant-abutment set. A load of 100 N was applied at 30° on the central fossa, and the equivalent stress was calculated for the crown, titanium components, bone, and resin cement layer. Results: The CAD/CAM group presented a significantly (p=0.0068) higher misfit (64.99±18.73 µm) than the heat-pressed group (37.64±15.66 µm). In silico results showed that the heat-pressed group presented a decrease in stress concentration of 61% in the crown and 21% in the cement. In addition, a decrease of 14.5% and an increase of 7.8% in the stress for the prosthetic abutment and implant, respectively, was recorded. For the cortical and cancellous bone, a slight increase in stress occurred with an increase in the cement layer thickness of 5.9% and 5.7%, respectively. Conclusion: The milling of wax patterns for subsequent inclusion and obtaining heat-pressed crowns is an option to obtain restorations with an excellent marginal fit and better stress distribution throughout the implant-abutment set

Transitional Dental implant in Adolescent Patient – A Narrative Review

Aim: This article aims to review the literature available on transitional implants and elaborates on the same through a case report with a follow-up of 5 years. Material and Method: PubMed, Medline, Google Scholar, and Web of Science databases were screened for literature. Articles other than those in English language were excluded. For the review, the complete texts of 49 papers were acquired, with 34 of them being included in the review. Conclusion: Transitional implant placement could be considered as an alternative to removable or fixed resin bonded dental prosthesis in adolescents with a regular follow-up. In such patients, a detailed assessment of growth pattern and a prediction of growth completion has to be done before considering implant as a treatment option.