RESUMO Objetivo: O estudo e a adoção de medidas preventivas odontológicas, em resposta à pandemia do COVID-19, são necessárias para evitar infecções cruzadas entre profissionais e pacientes. O objetivo desta revisão integrativa foi identificar as práticas preventivas do COVID-19 em odontologia. Métodos: A busca eletrônica foi realizada nas seguintes bases de dados: Pubmed / Medline, Web of Science, Cochrane Library, Scopus, LILACS e Scielo, utilizando os seguintes descritores e / ou palavras: “Coronavirus disease 2019”; “Coronavirus 2019”; “Covid-19”; “2019-ncov”; “Sars-cov2”; “Dental practice”; “Dental care”; “Dentistry”; “Dental medicine” and “Oral medicine”. O PRISMA foi utilizado como referência para sua realização. Resultados: Um total de 11 estudos foram incluídos e as medidas preventivas contra COVID-19 foram baseadas em diretrizes dos órgãos de saúde e consistiram em: realizar apenas tratamentos de emergência; reagendar pacientes com suspeita de doença; lavar as mãos; desinfetar superfícies com álcool a 70%; testar profissionais de odontologia para a doença; usar a máscara N95; jalecos descartáveis e protetores faciais. As crianças, além das medidas mencionadas acima, devem rotineiramente beber muita água e receber dietas saudáveis. Nenhum estudo avaliou a eficácia e a efetividade dessas medidas preventivas. Faltam evidências científicas sobre os protocolos preventivos adotados contra o COVID-19 em odontologia, uma vez que medidas preventivas são recomendadas pelos órgãos de saúde. Conclusão: Consequentemente, recomenda-se aos profissionais que sigam essas organizações até que sejam estabelecidos protocolos preventivos eficazes e eficientes, adaptados à odontologia.

ABSTRACT Objective: The study and enactment of dental preventive measures, in response to the COVID-19 pandemic, are necessary to prevent cross-infections between professionals and patients. The objective of this integrative review was to identify the COVID-19 preventive practices in dentistry. Methods: The electronic search was conducted on these databases: Pubmed / Medline, Web of Science, Cochrane Library, Scopus, LILACS and Scielo, using the following descriptors and / or words: “Coronavirus disease 2019”; “Coronavirus 2019”; “Covid-19”; “2019-ncov”; “Sars-cov2”; “Dental practice”; “Dental care”; “Dentistry”; “Dental medicine” and “Oral medicine”. PRISMA was used as a reference for designing it. Results: A total of 11 articles were included and the preventive measures against COVID-19 were based on guidelines from health agencies and consisted of: perform only emergency treatments; reschedule patients with suspected disease; hand washing; disinfection of surfaces with 70% alcohol; testing dental professionals for the disease; use the N95 mask; disposable lab coats, and face shields. Children, in addition to the measures mentioned above, should routinely drink a lot of water and be provided with healthy diets. No study has evaluated the efficacy and effectiveness of these measures. There is a lack of scientific evidence on the preventive protocols adopted against COVID-19 in dentistry since preventive measures are recommended by health agencies. Conclusion: Consequently, professionals are recommended to follow the guidelines by these organizations until effective and efficient preventive protocols tailored to dentistry are established.

RESUMO O objetivo deste estudo foi descrever um protocolo clínico para a fabricação de próteses superiores e inferiores usando a tecnologia CAD/CAM. Além disso, as próteses digitais e convencionais fabricadas para o mesmo paciente foram comparadas. A comparação foi baseada na satisfação, conforto, retenção, número de sessões de acompanhamento, desempenho mastigatório e qualidade de vida do paciente. Nenhuma etapa laboratorial foi necessária para a fabricação de CAD/CAM e menos sessões foram necessárias até a inserção da prótese. Comparadas às próteses convencionais, as próteses digitais proporcionavam melhor satisfação, conforto e retenção e exigiam menos sessões de acompanhamento. Ambas as próteses apresentaram resultados semelhantes sobre desempenho mastigatório e qualidade de vida. Como conclusão, a prótese digital é uma alternativa viável para o tratamento de pacientes desdentados. No entanto, ensaios clínicos controlados e randomizados são necessários para revelar os benefícios reais dessa alternativa de tratamento em comparação com a prótese convencional.

ABSTRACT The aim of this study was to describe a clinical protocol for fabrication of maxillary and mandibular dentures using CAD/CAM technology. Further, digital and conventional dentures fabricated for the same patient were compared. The comparison was based on patient’s satisfaction, comfort, retention, number of follow-up sessions, masticatory performance and quality of life. No laboratorial step was needed for CAD/CAM fabrication and less sessions were required up to denture insertion. Compared to the conventional dentures, digital dentures provided better satisfaction, comfort and retention and required less follow-up sessions. Both dentures presented similar results about masticatory performance and quality of life. As a conclusion, digital denture is a viable treatment alternative for edentulous patients. However, controlled and randomized clinical trials are required to reveal the real benefits of this treatment alternative compared to the conventional denture.

Abstract: The objective of this review is to identify preventive measures for COVID-19 to safeguard dental professionals providing prosthodontic dental care. Electronic searches were performed in PubMed, Scopus, and Cochrane databases using the following descriptors and/or words: “COVID-19,” “SARS-CoV-2,” “Dental practice,” “Prosthodontics,” and “Dental infection control.” Prosthodontists are at high risk for exposure to the novel coronavirus through aerosols and possibly contaminated surfaces and indirect contact with dental laboratories and dental technicians through impressions, dental stone casts, and fixed and removable prosthetic appliances. Therefore, preventive measures should be implemented, including performing emergency treatments only, rescheduling patients with suspected disease, disinfecting surfaces and prosthodontic materials with biocidal substances, and using protective equipment such as N95 masks, disposable gowns, and face-shields.

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

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

Resumo O objetivo deste artigo é avaliar a prevalência e os fatores associados a alterações na ATM em idosos institucionalizados. Estudo observacional e transversal, conduzido em 1.192 idosos brasileiros. Foram realizados exames intra e extraoral, baseados na Ficha de Avaliação da OMS (1997). Dados demográficos e nível de dependência também foram coletados. A autopercepção do idoso quanto à saúde bucal foi obtida através do GOHAI (Geriatric Oral Health Assessment Index). Na análise dos dados foram usados o teste do Qui-quadrado e a Regressão robusta de Poisson (nível de significância de 5%). A presença de alguma alteração na ATM foi pouco prevalente quando comparada a dos adultos, e esteve associada à condição de dependência do idoso (os independentes tiveram 45,4% mais alterações do que os dependentes), ao sexo (mulheres tiveram 47,4% mais alterações), à autopercepção de saúde bucal (quem avaliou negativamente teve 65,6% mais alterações) e à necessidade de prótese (PT) superior (quem necessita de algum tipo de PT superior teve 45,8%). Apesar de ter sido baixa, a presença de alterações na ATM esteve mais frequente em idosos independentes, do sexo feminino, que avaliaram negativamente a saúde bucal e que necessitam de algum tipo de PT superior.

Abstract This article aims to analyze the prevalence and associated factors of TMJ alterations in elderly institutionalized. An cross-sectional study of 1192 elderly institutionalized in Brazil was undertaken. Intra and extra-oral exams were performed and the TMJ was evaluated based on the Oral Health Assessment Form of the WHO (1997). Demographic data and elderly dependence were also collected. The self-perception of the elderly regarding oral health was measured using the Geriatric Oral Health Assessment Index - GOHAI. Data analysis was performed using the Chi-squared test and robust Poisson regression (level of significance of 5%). The prevalence of TMJ alteration was low compared to adults and was only associated with the state of dependence of the elderly individual (independent had 45.4% more alterations than dependent individuals), gender (women had 47.4% more alterations), self-perception of oral health (who evaluated negatively had 65.6% more alterations) and the need of upper dentures (who needed some kind of upper dentures had 45.8% more alterations than those who did not). Despite being low, the presence of alterations in the TMJ was more frequent in elderly independent, women, who evaluated negatively oral health and need some kind of upper dentures.

Resumo O objetivo deste artigo é avaliar a prevalência e os fatores associados a alterações na ATM em idosos institucionalizados. Estudo observacional e transversal, conduzido em 1.192 idosos brasileiros. Foram realizados exames intra e extraoral, baseados na Ficha de Avaliação da OMS (1997). Dados demográficos e nível de dependência também foram coletados. A autopercepção do idoso quanto à saúde bucal foi obtida através do GOHAI (Geriatric Oral Health Assessment Index). Na análise dos dados foram usados o teste do Qui-quadrado e a Regressão robusta de Poisson (nível de significância de 5%). A presença de alguma alteração na ATM foi pouco prevalente quando comparada a dos adultos, e esteve associada à condição de dependência do idoso (os independentes tiveram 45,4% mais alterações do que os dependentes), ao sexo (mulheres tiveram 47,4% mais alterações), à autopercepção de saúde bucal (quem avaliou negativamente teve 65,6% mais alterações) e à necessidade de prótese (PT) superior (quem necessita de algum tipo de PT superior teve 45,8%). Apesar de ter sido baixa, a presença de alterações na ATM esteve mais frequente em idosos independentes, do sexo feminino, que avaliaram negativamente a saúde bucal e que necessitam de algum tipo de PT superior.

Abstract This article aims to analyze the prevalence and associated factors of TMJ alterations in elderly institutionalized. An cross-sectional study of 1192 elderly institutionalized in Brazil was undertaken. Intra and extra-oral exams were performed and the TMJ was evaluated based on the Oral Health Assessment Form of the WHO (1997). Demographic data and elderly dependence were also collected. The self-perception of the elderly regarding oral health was measured using the Geriatric Oral Health Assessment Index - GOHAI. Data analysis was performed using the Chi-squared test and robust Poisson regression (level of significance of 5%). The prevalence of TMJ alteration was low compared to adults and was only associated with the state of dependence of the elderly individual (independent had 45.4% more alterations than dependent individuals), gender (women had 47.4% more alterations), self-perception of oral health (who evaluated negatively had 65.6% more alterations) and the need of upper dentures (who needed some kind of upper dentures had 45.8% more alterations than those who did not). Despite being low, the presence of alterations in the TMJ was more frequent in elderly independent, women, who evaluated negatively oral health and need some kind of upper dentures.

Resumo O objetivo deste estudo foi avaliar a perda óssea peri-implantar de implantes Hexágono Externo (HE) e Cone Morse (CM) em usuários de sobredentaduras mandibulares com carga imediata por um período de acompanhamento de 1 ano. Este é um ensaio clínico controlado não randomizado que inclui 18 CM e 22 HE. Radiografias periapicais foram obtidas na instalação das sobredentaduras e 1 ano após. A perda óssea peri-implante foi avaliada através da digitalização e análise das radiografias no software Corel DRAW X7. Para tal, a medição foi feita da plataforma dos implantes até a crista óssea nas faces mesiais e distais de cada implante. Os resultados mostraram alta taxa de sucesso nos grupos HE (100%) e CM (94,4%). Para os níveis ósseos peri-implantes, foi encontrada diferença significativa entre os grupos (p = 0,032) e maior perda óssea foi observada no grupo HE. Em média, a perda óssea foi de 0,85 mm (±0,82) para HE e de 0,10 mm (±1,0) para CM. Concluiu-se que uma maior perda óssea ocorreu no grupo HE em comparação com o grupo CM após um acompanhamento de 1 ano.

Abstract The aim of this study was to evaluate the peri-implant bone loss of External Hexagon (EH) and Morse Taper (MT) implants in patients wearing immediately loaded mandibular overdentures during a 1-year follow-up. This is a non-randomized controlled clinical trial including 18 MT and 22 EH implants. Periapical radiographs were taken after overdentures insertion and following 1 year. The peri-implant bone loss was assessed through digitalization and analysis of the radiographs in the software Corel DRAW X7. For this, measurement from implant platform to residual ridge at mesial and distal surfaces of each implant was conducted. The results showed high success rate in the groups EH (100%) and MT (94.4%). For peri-implant bone levels, it was found significant difference between the groups (p=0.032) and greater bone loss was observed in the group EH. In general, bone loss was 0.85mm (±0.82) for EH and 0.10mm (±1.0) for MT. It was concluded that greater bone loss occurred in the group EH in comparison to the group MT after a 1-year follow-up.

Resumo Objetivou-se identificar a autopercepção da saúde bucal em idosos institucionalizados e investigar se aspectos sociodemográficos e clínicos estão associados à autopercepção negativa. Foram avaliados 166 idosos, os quais responderam a uma questão de autopercepção que prediz o GOHAI. Os dados sociodemográficos foram obtidos a partir de questionários previamente validados, assim como os clínicos, que se fundamentaram na ficha da OMS e no QST-DTM, utilizado para verificar a presença de DTM. Os dados obtidos foram submetidos aos testes de Mann-Whitney, Exato de Fisher e Qui-quadrado com nível de significância de 5%. Em média, os idosos tinham 80,5 anos e 75,9% eram do sexo feminino. O CPO-D médio foi de 28,9, tendo a maioria, 65%, relatado uma boa ou excelente condição de seus dentes, gengivas e próteses. Três questões do questionário QST-DTM se mostraram associadas à autopercepção negativa. Os que dizem que sempre sua mandíbula “trava” quando abre ou fecha a boca, sempre têm dor na fronte ou lateralmente a ela e sempre seus maxilares ficam cansados ao longo dia, estão mais insatisfeitos com a sua saúde bucal. Concluiu-se que a autopercepção em saúde bucal teve pouca influência das condições clínicas e sociodemográficas, provavelmente por ser a dor o principal fator associado à autopercepção desfavorável nestes indivíduos.

Abstract The aim of this study was to determine self-perception of oral-health in institutionalized elderly, and look into the sociodemographic and clinical aspects associated with negative self-perception. One hundred and sixty-six elderly were assessed by answering a self-perception question that predicts the GOHAI (Geriatric Oral Health Assessment Index). Sociodemographic data was obtained from a previously validated questionnaire and clinical data taken from the WHO file and QST-TMD used to check the existence of TMD (temporomandibular disturbance). The data gathered was submitted to Mann-Whitney, Fisher’s Exact and Chi-squared tests with a 5% significance level. The average age of the study population was 80.5, and 75.9% were women. The mean DMFT (decayed, missing, and filled teeth in permanent teeth) was 28.9, the majority of the sample subject (65%) reported good to excellent teeth, gums and prostheses (dentures and bridges). Three questions in the TMD questionnaire (QST-DTM) were associated with negative self-perception. Those claiming that their jaws “lock” when they open or close their mouth, who always have pain at the front or side of their jaw, or whose jaws get tired during the course of the day are less satisfied with their oral health. We conclude that clinical and sociodemographic conditions have little influence on self-perception of oral health, possibly because pain is the main factor associated with negative self-perception in these individuals.

Resumo Objetivou-se identificar a autopercepção da saúde bucal em idosos institucionalizados e investigar se aspectos sociodemográficos e clínicos estão associados à autopercepção negativa. Foram avaliados 166 idosos, os quais responderam a uma questão de autopercepção que prediz o GOHAI. Os dados sociodemográficos foram obtidos a partir de questionários previamente validados, assim como os clínicos, que se fundamentaram na ficha da OMS e no QST-DTM, utilizado para verificar a presença de DTM. Os dados obtidos foram submetidos aos testes de Mann-Whitney, Exato de Fisher e Qui-quadrado com nível de significância de 5%. Em média, os idosos tinham 80,5 anos e 75,9% eram do sexo feminino. O CPO-D médio foi de 28,9, tendo a maioria, 65%, relatado uma boa ou excelente condição de seus dentes, gengivas e próteses. Três questões do questionário QST-DTM se mostraram associadas à autopercepção negativa. Os que dizem que sempre sua mandíbula “trava” quando abre ou fecha a boca, sempre têm dor na fronte ou lateralmente a ela e sempre seus maxilares ficam cansados ao longo dia, estão mais insatisfeitos com a sua saúde bucal. Concluiu-se que a autopercepção em saúde bucal teve pouca influência das condições clínicas e sociodemográficas, provavelmente por ser a dor o principal fator associado à autopercepção desfavorável nestes indivíduos.

Abstract The aim of this study was to determine self-perception of oral-health in institutionalized elderly, and look into the sociodemographic and clinical aspects associated with negative self-perception. One hundred and sixty-six elderly were assessed by answering a self-perception question that predicts the GOHAI (Geriatric Oral Health Assessment Index). Sociodemographic data was obtained from a previously validated questionnaire and clinical data taken from the WHO file and QST-TMD used to check the existence of TMD (temporomandibular disturbance). The data gathered was submitted to Mann-Whitney, Fisher’s Exact and Chi-squared tests with a 5% significance level. The average age of the study population was 80.5, and 75.9% were women. The mean DMFT (decayed, missing, and filled teeth in permanent teeth) was 28.9, the majority of the sample subject (65%) reported good to excellent teeth, gums and prostheses (dentures and bridges). Three questions in the TMD questionnaire (QST-DTM) were associated with negative self-perception. Those claiming that their jaws “lock” when they open or close their mouth, who always have pain at the front or side of their jaw, or whose jaws get tired during the course of the day are less satisfied with their oral health. We conclude that clinical and sociodemographic conditions have little influence on self-perception of oral health, possibly because pain is the main factor associated with negative self-perception in these individuals.

Abstract The aim of this non-randomized controlled clinical trial was to evaluate the oral health-related quality of life and masticatory efficiency of patients rehabilitated with mandibular two-implant overdentures with immediate loading or conventional dentures. Fifty completely edentulous patients wearing bimaxillary conventional dentures, for at least one year, were recruited. The patients were then assigned to either two treatment groups: mandibular overdentures supported by two implants with bar-clip system and a maxillary conventional denture (n = 25), and new maxillary and mandibular conventional complete dentures (n = 25). Masticatory efficiency and oral health-related quality of life were assessed before and 3 months after denture insertion. The Brazilian version of OHIP-Edent questionnaire was used to assess the oral health-related quality of life. Masticatory efficiency was evaluated with chewing capsules through a colorimetric method. The results revealed fewer oral health–related quality of life problems in patients wearing mandibular two-implant overdentures compared to the conventional dentures group. In addition, the implant overdenture group presented statistically significant improvement in masticatory efficiency (p = 0.001). There was no correlation between masticatory efficiency and OHIP in the implant group (p > 0.05), however a correlation was found in the conventional denture group (p < 0.05). Therefore, these short-term results suggest that mandibular overdenture retained by 2 implants with immediate loading combined with maxillary conventional dentures provide better masticatory efficiency and oral health–related quality of life than mandibular conventional dentures.

Introdução:A Síndrome da Combinação (SC) é uma condição patológica associada aos pacientes usuários de prótese total maxilar e prótese parcial removível (PPR) mandibular.Objetivo:Observar e mensurar a prevalência dos sinais da Síndrome da Combinação encontrados em pacientes usuários de prótese total maxilar na presença ou ausência de PPR mandibular (Classe I de Kennedy); e averiguar uma possível associação entre a utilização de PPR e a prevalência dos sinais clínicos da síndrome.Material e método:A amostra foi composta por 62 pacientes atendidos no Departamento de Odontologia da Universidade Federal do Rio Grande do Norte (UFRN). O exame clínico intrabucal foi realizado para a verificação da presença ou ausência dos sinais clínicos específicos da Síndrome da Combinação, descrita por Kelly (1972): reabsorção óssea na região anterior da maxila, aumento das tuberosidades, hiperplasia papilar palatina, extrusão dos dentes naturais inferiores anteriores e reabsorção óssea posterior mandibular (variáveis dependentes). Para determinação da associação entre as variáveis dependentes e independentes (uso de PPR inferior e tempo de edentulismo superior), foi utilizado o teste qui-quadrado com significância de 95%.Resultado:A característica mais frequente foi a presença de reabsorção mandibular (93,5%). Quanto à associação entre o uso de PPR inferior e as características da Síndrome da Combinação, só houve diferença estatisticamente significativa entre portadores e não portadores de PPR com relação à extrusão dos dentes inferiores anteriores (p = 0,045).Conclusão:Dentro das limitações deste estudo, verificou-se que os sinais clínicos da Síndrome da Combinação foram bastante prevalentes, e não foi observada associação entre o uso de PPR e as características da Síndrome.

Introduction:Combination Syndrome (CS) is a pathological condition observed in maxillary complete denture (CD) and mandibular removable partial denture (RPD) wearers.Purpose:The aim of this study was to observe and measure the prevalence of CS signs in treatment-seeking wearers of maxillary CD associated or not with RPD (mandibular Kennedy Class I). The association between RPD wearing and the number of CS clinical signs was also evaluated.Material and method:The sample included 62 patients seen at the Department of Dentistry, Federal University of Rio Grande do Norte (UFRN). A clinical oral examination was conducted to assess the presence of specific clinical signs of CS as described by Kelly (1972): bone resorption in the maxillary anterior region, tuberosity overgrowth, palatal papillary hyperplasia, extrusion of mandibular anterior teeth and bone resorption in the mandibular posterior region. The chi-square test at the 95% level of significance was used to test the association between dependent and independent variables.Result:Mandibular resorption was the most frequent complication (93.5%). There was a statistically significant difference between RPD wearers and non-wearers with regard to extrusion of mandibular anterior teeth (p = 0.045).Conclusion:Within the limitations of the present study, a high prevalence of CS clinical signs was observed, but no association between RPD wearing and syndrome characteristics was found.

This systematic review evaluated the influence played by the number of implants on the results of rehabilitation treatment with mandibular overdentures on 2 or 4 implants. The literature search was conducted using PubMed, Embase and Cochrane databases. Specific terms were used in performing a search from January 1980 to January 2013. The search strategy was applied by two reviewers who extracted the data and compared the results. Discrepancies were resolved by discussion. Great heterogeneity was seen among the selected studies, in regard to survival rates, prosthesis failure and function rates. A medium degree of quality and methodological consistency was found in one study, and no studies showed a high degree. When considering the prosthesis success rate for 2 implants, there was a variation of 23% to 100%. However, when considering the survival rate, the result was 92% to 100%. For 4 implants, prosthesis survival rates showed less variation, i.e., 97.7% to 100%. Ball attachments were the most common type of abutment for 2 implants; however, there was a higher prevalence of bar abutments for 4 implants. Rehabilitations with 2 implants showed more complications and required more maintenance according to the connection type. Given the limitations of this review, mandibular overdentures with 4 implants showed better results with respect to survival and success rates, especially those with a bar connection. Further studies comparing these two treatment types are necessary to improve the scientific evidence in this area.

A perda dentária é muito prevalente no Brasil, sobretudo entre idosos, onde mais de 3 milhões precisam de prótese total bimaxilar. Para mudar este quadro, o governo Federal instituiu os Centros de Especialidades Odontológicas (CEO). Assim, este estudo avaliou uma das atribuições desses Centros, a provisão de próteses totais convencionais (PTC) sob a ótica da qualidade e satisfação relacionadas a este produto. Para tanto, fez-se um estudo seccional com 149 indivíduos reabilitados em CEO do Rio Grande do Norte com tais próteses entre 2007 a 2009. Os dados foram obtidos por questionário e exame clínico da PTC quanto a sua retenção, estabilidade, estética e fixação. Das 233 PTC avaliadas; 52,7% das superiores e 9,5% das inferiores foram tecnicamente satisfatórias. Contudo, 69,1% (n = 103) dos entrevistados relataram satisfação com suas próteses. Quanto a associação entre qualidade técnica e satisfação, o teste Qui-quadrado indicou que PTC superiores tecnicamente adequadas (p = 0,041), sobretudo quanto a retenção (p = 0,002) e estabilidade (p = 0,000), estavam associados à satisfação positiva do usuário. Assim, as próteses satisfizeram à população assistida, apesar dos déficits técnicos. No entanto, essa satisfação pode advir da reabilitação em si e não de sua funcionalidade.

Tooth loss is highly prevalent in Brazil, especially among the elderly, where more than three million need bimaxillary dentures. The federal government instituted Specialized Dental Care Centers (SDCC) to remedy this situation. The scope of this study was to evaluate one attribute of these Centers, namely the provision of full conventional dentures (FCD) from the perspective of quality and satisfaction related to this product. A cross-sectional study was conducted with 149 individuals fitted with such dentures in SDCC of Rio Grande do Norte between 2007 and 2009. Data were obtained by questionnaire and clinical examination of FCD regarding its retention, stability, aesthetics, and fixation. From the 233 dentures evaluated, 52.7% of upper FCD and 9.5% of lower FCD were technically satisfactory. With respect to the association between technical quality and satisfaction, the chi-square test indicated that upper FCDs were technically adequate (p = 0.041), particularly in terms of retention (p = 0.002) and stability (p = 0.000) and were associated with patient satisfaction. Thus, the FCD satisfied the users, despite the technical defects. However, this satisfaction may come from the fitting itself rather than its functionality.

A perda dentária é muito prevalente no Brasil, sobretudo entre idosos, onde mais de 3 milhões precisam de prótese total bimaxilar. Para mudar este quadro, o governo Federal instituiu os Centros de Especialidades Odontológicas (CEO). Assim, este estudo avaliou uma das atribuições desses Centros, a provisão de próteses totais convencionais (PTC) sob a ótica da qualidade e satisfação relacionadas a este produto. Para tanto, fez-se um estudo seccional com 149 indivíduos reabilitados em CEO do Rio Grande do Norte com tais próteses entre 2007 a 2009. Os dados foram obtidos por questionário e exame clínico da PTC quanto a sua retenção, estabilidade, estética e fixação. Das 233 PTC avaliadas; 52,7% das superiores e 9,5% das inferiores foram tecnicamente satisfatórias. Contudo, 69,1% (n = 103) dos entrevistados relataram satisfação com suas próteses. Quanto a associação entre qualidade técnica e satisfação, o teste Qui-quadrado indicou que PTC superiores tecnicamente adequadas (p = 0,041), sobretudo quanto a retenção (p = 0,002) e estabilidade (p = 0,000), estavam associados à satisfação positiva do usuário. Assim, as próteses satisfizeram à população assistida, apesar dos déficits técnicos. No entanto, essa satisfação pode advir da reabilitação em si e não de sua funcionalidade.

Tooth loss is highly prevalent in Brazil, especially among the elderly, where more than three million need bimaxillary dentures. The federal government instituted Specialized Dental Care Centers (SDCC) to remedy this situation. The scope of this study was to evaluate one attribute of these Centers, namely the provision of full conventional dentures (FCD) from the perspective of quality and satisfaction related to this product. A cross-sectional study was conducted with 149 individuals fitted with such dentures in SDCC of Rio Grande do Norte between 2007 and 2009. Data were obtained by questionnaire and clinical examination of FCD regarding its retention, stability, aesthetics, and fixation. From the 233 dentures evaluated, 52.7% of upper FCD and 9.5% of lower FCD were technically satisfactory. With respect to the association between technical quality and satisfaction, the chi-square test indicated that upper FCDs were technically adequate (p = 0.041), particularly in terms of retention (p = 0.002) and stability (p = 0.000) and were associated with patient satisfaction. Thus, the FCD satisfied the users, despite the technical defects. However, this satisfaction may come from the fitting itself rather than its functionality.

A manutenção da função mastigatória tem importância especial em pacientes portadores de prótese total devido às limitações inerentes a esse tipo de prótese. Nesse contexto, a oclusão balanceada bilateral (OBB) é empregada com o intuito de obter-se uma maior eficiência mastigatória. Entretanto, analisando-se a literatura criticamente, observa-se que não existem evidências científicas suficientes que suportem a aplicação da OBB como conceito oclusal ideal em prótese total (PT). Assim, o presente trabalho teve o objetivo de verificar se pacientes portadores de PT dupla com OBB apresentam maior eficiência e capacidade mastigatória que aqueles com desoclusão com guia canino (DGC). Com esse intuito, realizou-se um ensaio clínico controlado duplo-cego do tipo crossover. A amostra foi composta de 24 pacientes portadores de prótese total dupla, onde todos fizeram uso de ambos os conceitos oclusais por períodos iguais de 3 meses. A avaliação da eficiência mastigatória foi realizada através do método colorimétrico com o uso de cápsulas mastigatórias. Não se encontrou diferença estatística significativa para a eficiência (p=0,0952) entre os dois conceitos oclusais estudados. Dessa forma, pode-se concluir que usuários de PT dupla com OBB não apresentam maior eficiência mastigatória que aqueles com DGC.

The maintenance of masticatory function is especially important for patients wearing complete dentures due to their limitations. Thus, the bilateral balanced occlusal concept is used to achieve greater masticatory efficiency. However, a critical review of the literature reveals that there is not sufficient scientific evidence to support bilateral balanced occlusion as the most appropriate occlusal concept in complete dentures. Therefore, the aim of this study was to evaluate the masticatory efficiency in complete dentures wearers with bilateral balanced occlusion and canine guidance. A double-blinded controlled crossover clinical trial was conducted. The sample was composed by 24 edentulous patients who wore sets of complete dentures with both occlusal concepts during equal periods of 3 months. Objective data were collected through the masticatory efficiency test performed by the colorimetric method with the beads, in which capsules of a synthetic material enclosing fuchsine-containing granules were used. Subjective data were recorded by patient's ratings of their chewing function. No significant statistical difference was found for masticatory efficiency (p=0.095) between the two occlusal concepts studied. The results suggest that bilateral balanced occlusion does not improve the masticatory efficiency in complete denture wearers.