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Background: The numerous techniques for identifying adulthood require research testing the accuracy of each method in different populations. This study verified the accuracy of the third molar maturity index (I3M) proposed by Cameriere et al. (2008) for diagnosing the age of majority in a southern Brazilian population sample. Material and Methods: Panoramic radiographs of patients with dental element 38 treated at the School of Dentistry of the University of Passo Fundo (UPF), RS, Brazil, were analyzed. The patients were separated into age groups between 15.00 and 22.99 years. The Cameriere (2008) method was applied to each radiograph. The study sample comprised 671 individuals, with 385 women (mean age 19.67 ± 2.05) and 286 men (mean age 19.5 ± 2.11). Results: The original cut-off value of I3M≤0.08 classified individuals younger and older than 18 years. ROC curve plotting resulted in an overall accuracy of 0.69 and 0.84 for women and men, respectively. The most favorable cut-off value for southern Brazilian men was 0.06, and women showed better results with an I3M adjusted to 0.13. The new cut-off values produced an accuracy of 0.78 for women and 0.84 for men. The original cut-off point to the I3M (0.08) was not the most appropriate for the studied sample. Conclusions: Thus, index adjustments to 0.13 for women and 0.06 for men may improve method performance among southern Brazilian individuals. Key words:Molar, third, radiography, panoramic, forensic dentistry, age groups, imputability.

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OBJECTIVE: To perform an epidemiological survey comparing the cell proliferative activity of 107 cases of oral leukoplakia with their clinical and histopathological characteristics. MATERIALS AND METHODS: A cross-sectional, observational, and histological-histochemical study. The cases came from the Histopathological Diagnostic Service of UPF/RS and the School of Dentistry of Araçatuba FOA/UNESP/SP (1986-2016). The histopathological sections were stained using the silver staining (AgNOR) technique and the nuclei of 100 epithelial cells selected randomly were recorded to count the number of nucleolar organizer regions (NORs). The mean NORs per lesion were correlated to clinical and histological characteristics using ANOVA, at 5% significance. RESULTS: Most of the cases included men (62.62%), white (64.49%), and with an average age of 53.94 years. The most probable etiological factors were smoking (44.7%) and alcohol consumption (9.85%). The evolution time of most lesions was fast (33.65%), manifesting mainly in the form of plaques (70.37%) and without symptoms (58.88%). They were located mainly in the cheek mucosa (26.62%) and presented white color (66.35%), well-defined edges (59.81%), firm consistency (47.5%), and keratinized surface (49.53%). Etiological factor (p = 0.003), evolution time (p = 0.006), symptoms (p = 0.029), location (p = 0.020), consistency (p = 0.047), histopathological characteristics (p = 0.004), and superficial keratinization (p = 0.001) were statistically significant regarding the mean NORs of the leukoplakias studied. CLINICAL RELEVANCE: Oral leukoplakias caused by alcohol consumption and/or tobacco use, considering an evolution time of fewer than 12 months, asymptomatic, located in the lower lip or tongue, and with a firm consistency and increased superficial keratinization should be treated more aggressively by the clinician to avoid cancerization.

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Objetivos: analisar, por meio de revisão de literatura, o impacto da cirurgia ortognática na qualidade de vida de pacientes com diferentes deformidades orofaciais e identificar a concepção e a percepção dos pacientes em relação às correções de deformidades faciais de um quadro prévio ao procedimento até o momento da avaliação. Metodologia: foi realizado um levantamento da literatura nas bases de dados PubMed e Medline, utilizando os seguintes termos de busca: "ortognática", "distúrbios temporomandibulares", "qualidade de vida" e "psicossocial". Os artigos foram escolhidos nas línguas portuguesa e inglesa, dentre aqueles publicados entre os anos de 1990 a 2019. Considerações finais: a correção das deformidades esqueléticas faciais e das irregularidades dentárias associadas pela cirurgia ortognática apresenta um impacto positivo na qualidade de vida dos pacientes pela melhora harmônica dos ossos esqueléticos faciais, resultando em uma estética facial favorável e em um aprimoramento das funções do sistema estomatognático.(AU)

Objectives: to analyze, through literature review, the impact of orthognathic surgery on the quality of life of patients with different orofacial deformities and to identify the patients' conception and perception about corrections of facial deformities prior to the procedure until the moment of evaluation. Methods: a literature review was performed using the PubMed and Medline databases using the following search terms: "orthognathic", "temporomandibular disorders", "quality of life" and "psychosocial". The articles were chosen in Portuguese and English between 1990 and 2019. Final considerations: correction of facial skeletal deformities and associated dental irregularities, by orthognathic surgery, have a positive impact on patients' quality of life through the harmonious improvement of skeletal facial bones, resulting in a favorable facial esthetics and an improvement of the functions of the stomatognathic system.(AU)

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Introdução: O Transtorno do Espectro Autista (TEA) é um distúrbio comportamental complexo, na odontologia, os indivíduos com TEA apresentam consequências em sua saúde bucal pela inadequada higiene oral e difícil manejo interferindo na condição periodontal. Objetivo: Verificar a doença periodontal em indivíduos com TEA utilizando-se como instrumento o Índice Periodontal Comunitário de Necessidades de Tratamento (CPITN). Método: Trata-se de uma revisão integrativa da literatura embasada em artigos de periódicos da base de dados PubMed e Portal Regional da Biblioteca Virtual em Saúde (BVS), empregando como critérios de seleção artigos com desenho amostral do tipo caso-controle que utilizaram para avaliação periodontal de indivíduos com TEA, o índice CPITN entre os anos de 1989 a 2019, todos em língua inglesa. Resultados: A busca resultou em 10 artigos que correspondiam aos filtros selecionados. Um total de 4 artigos que foram lidos na íntegra e cuja análise foi o tema central, nos estudos avaliados, os participantes com TEA apresentaram resultados mais severos nas taxas do índice CPITN. Conclusão: Com o índice CPITN tornou-se possível diagnosticar doença periodontal e necessidade de tratamento em indivíduos com TEA, de forma simplificada e eficaz (AU)

Introduction: Autistic Spectrum Disorder (ASD) is a complex behavioral disorder. In dentistry, individuals with ASD have consequences on their oral health due to inadequate oral hygiene and difficult handling interfering with the periodontal condition. Objective: To verify the periodontal disease in individuals with ASD using the Community Periodontal Treatment Needs Index (CPITN) as instrument. Method: This is an integrative review of the literature based on articles from the PubMed and Regional Portal of the Virtual Health Library (VHL) database, using as selection criteria articles with sample design of the case-control type that were used for evaluation periodontal disease of individuals with ASD, the CPITN index between the years 1989 and 2019. Results The search resulted in 10 articles corresponding to the selected filters. A total of 4 articles that were read in full and whose analysis was the central theme, in the evaluated studies, the participants with ASD presented more severe results in the CPITN index rates. Conclusion: With the CPITN index it became possible to diagnose periodontal disease and the need for treatment in individuals with ASD, in a simplified and effective way. (AU)

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BACKGROUND: The association between tooth loss and masticatory problems may influence on food choices and consequently impact nutrition and quality of life. This study aimed to evaluate impact of oral rehabilitation with implants in nutrition and quality of life. MATERIAL AND METHODS: A prospective study was performed. The Questionnaire for Healthy Habits (QHH) and the Oral Health Impact Profile-14 (OHIP-14) tools were used to assess nutrition and oral health status, respectively. Oral implants were placed and the adjacent the bone was radiographically assessed. The mean outcomes of the QHH between pre- and post-rehabilitation periods were assessed with the Wilcoxon Signed Rank test. The OHIP-14 was assessed using Fisher's exact test. RESULTS: The implant surfaces showed a significant bone loss after six and 24 months of rehabilitation (p<0.001). There was no significant change in the masticatory pattern of patients (p>0.05). Nevertheless, the patients perceived a significant reduction in discomfort (p<0.02) when eating, after 24 months of the rehabilitation. CONCLUSIONS: These findings confirm the hypothesis that oral rehabilitation with implants may not trigger direct improvement in nutrition. However, it plays an especial role improving quality of life. Key words:Dentistry, nutrition, oral implants, quality of life.

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OBJECTIVES: To evaluate and compare the magnitude and distribution of stresses generated on implants, abutments and first molar metal-ceramic crowns using finite element analysis. METHODS: Preliminary three-dimensional models were created using the computer-aided design software SolidWorks. Stress and strain values were observed for two distinct virtual models: model 1 - Morse taper and solid abutment; model 2 - Morse taper and abutment with screw. A load (250 N) was applied to a single point of the occlusal surface at 15° to the implant long axis. Von Mises stresses were recorded for both groups at four main points: 1) abutment-retaining screws; 2) abutment neck; 3) cervical bone area; 4) implant neck. RESULTS AND CONCLUSION: Model 1 showed a higher stress value (1477.5 MPa) at the abutment-retaining screw area than the stresses found in model 2 (1091.1 MPa for the same area). The cervical bone strain values did not exceed 105 µm for either model.

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OBJECTIVES: To evaluate and compare the magnitude and distribution of stresses generated on implants, abutments and first molar metal-ceramic crowns using finite element analysis. METHODS: Preliminary three-dimensional models were created using the computer-aided design software SolidWorks. Stress and strain values were observed for two distinct virtual models: model 1 - Morse taper and solid abutment; model 2 - Morse taper and abutment with screw. A load (250 N) was applied to a single point of the occlusal surface at 15° to the implant long axis. Von Mises stresses were recorded for both groups at four main points: 1) abutment-retaining screws; 2) abutment neck; 3) cervical bone area; 4) implant neck. RESULTS AND CONCLUSION: Model 1 showed a higher stress value (1477.5 MPa) at the abutment-retaining screw area than the stresses found in model 2 (1091.1 MPa for the same area). The cervical bone strain values did not exceed 105 µm for either model.

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Abstract Introduction Tooth loss is a health disorder of the elderly population that may lead to masticatory deficiency and nutritional risks, inducing the biochemical changes of metabolic syndrome (MS). Objective To verify the relationship among number of teeth, anthropometric measurements, and MS in a group of elderly people. Material and method The study was developed in Porto Alegre, RS, Brazil, and it was divided into three phases. The first phase collected information from the database of all project participants and the second one collected sociodemographic, anthropometric, and biochemical data. The third phase was divided into two other phases: first, oral health interviews were applied to the elderly (281 patients evaluated by telephone and 23 visited at home) and second, 45 patients were randomly selected and invited to validate the data obtained by telephone with oral clinical examinations performed by a trained dental surgeon. The sample consisted of 304 individuals. The data collected were tabulated and analyzed using statistical tests. Result Elderly women with severe tooth loss present a significantly higher risk of developing MS. Thus, the maintenance of natural teeth in the elderly is a protective factor for the syndrome. Conclusion The findings support the hypothesis that the oral health of individuals, expressed by the number of teeth, may compromise and increase the risk of MS in the elderly.

Resumo Introdução A perda dentária é um distúrbio de saúde dos idosos que pode levar à deficiência mastigatória e riscos nutricionais, induzindo alterações bioquímicas da síndrome metabólica (SM). Objetivo Verificar a relação entre número de dentes, medidas antropométricas e SM em um grupo de idosos. Material e método O estudo foi desenvolvido na cidade de Porto Alegre, RS, Brasil, e foi dividido em três fases. A primeira fase coletou informações do banco de dados de todos os participantes do projeto e a segunda coletou dados sociodemográficos, antropométricos e bioquímicos. A terceira fase foi dividida em duas outras fases: primeiro foram aplicadas entrevistas de saúde bucal aos idosos (281 pacientes avaliados por ligações telefônicas e 23 atendidos em domicílio) e, segundo, 45 pacientes foram selecionados aleatoriamente e convidados a validar os dados obtidos por telefone com exames clínicos orais. A amostra foi composta por 304 indivíduos. Os dados coletados foram tabulados e analisados ​​por meio de testes estatísticos. Resultado Mulheres idosas com perda dentária severa apresentam um risco significativamente maior de desenvolver SM. Assim, a manutenção dos dentes naturais nos idosos é um fator protetor para a síndrome. Conclusão Os achados reforçam a hipótese de que a saúde bucal dos indivíduos, expressa pelo número de dentes, pode comprometer e aumentar o risco de SM em idosos.

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Introdução: os estudos epidemiológicos exercem um importante papel na Saúde Pública, indicando a prevalência e a incidência das lesões do complexo bucomaxilofacial, e revelando fatores associados, como perfil socioeconômico, fatores genéticos e ambientais, e permitindo o direcionamento de ações de promoção e de prevenção de saúde. Objetivo: o objetivo do presente trabalho é realizar uma revisão de literatura acerca dos aspectos mais importantes para o estabelecimento do diagnóstico das alterações estomatológicas. Revisão de literatura: um dos principais obstáculos dos profissionais da saúde diante de um caso de lesão bucal é o estabelecimento de um diagnóstico preciso, devido à grande quantidade de diagnósticos diferenciais que tais condições podem apresentar. É viável, através do auxílio dos estudos de prevalência, reduzir o número de diagnósticos diferenciais, identificando a frequência das lesões para cada região, ao considerar também variáveis, como faixa etária, etnia e gênero. Considerações finais: conhecer a prevalência das lesões e saber identificar as variáveis associadas a cada uma é de suma importância para o estudante de odontologia e mesmo para o profissional, uma vez que este conhecimento contribuirá para o melhor manuseio e proservação de seu paciente.

Introduction: epidemiological studies performs an important role in Public Health, indicating the prevalence and incidence of injuries of the bucomaxillofacial complex, and revealing associated factors such as socioeconomic profile, genetic and environmental factors, and allowing the promotion of prevention and Cheers. Objective: the aim of the present study is to carry out a literature review about the most important aspects for establishing the diagnosis of stomatologic alterations. Literature review: one of the main obstacles faced by health professionals in the case of oral lesions is the establishment of an accurate diagnosis, due to the large number of differential diagnoses that such conditions may be present. It is feasible, through the aid of prevalence studies, to reduce the number of differential diagnoses, identifying the frequency of lesions for each region, as well as variables such as age, ethnicity and gender. Final considerations: knowing the prevalence of lesions and knowing how to identify the variables associated with each one is of paramount importance for the student of dentistry and even for the professional, since this knowledge will contribute to the better handling and proservation of his patient.

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Introdução: as overdentures são próteses totais removíveis, mucoimplanto-suportadas, estabilizadas por elementos instalados sobre raízes residuais e/ou sobre implantes. Uma variedade de sistemas de encaixe tem sido utilizada para suportar as sobredentaduras, dentre os quais os sistemas barra-clipe, bolas, magnetos e coroas telescópicas. Objetivo: avaliar, por meio de uma revisão de literatura, as sobredentaduras retidas por sistema barra-clipe, expondo um correto planejamento, bem como descrevendo protocolos de confecção de tais aparelhos. Métodos: foi realizada uma revisão de literatura nas bases de dados do Centro Latino-americano e do Caribe de Informações em Ciências da Saúde (LILACS), Medline, Bibliografia Brasileira de Odontologia (BBO), na biblioteca virtual (SCIELO), e no acervo de livros da Universidade de Passo Fundo/RS (UPF). Revisão de literatura: o sistema barra-clipe consiste de uma barra plástica para fundição (ou já em metal) e de um clipe de retenção. Em algumas situações, o sistema de encaixes por barra-clipe é mais indicado do que os demais sistemas, apresentando, todavia, limitações em determinados cenários clínicos. O sistema barra-clipe permite considerável retenção e estabilidade, resultando num restabelecimento da função mastigatória, maior segurança e grande satisfação do paciente. Considerações finais: a maior parte dos estudos mostrou uma melhora da qualidade de vida relacionada à saúde bucal dos pacientes após tratamento com overdenture em comparação com a prótese total removível convencional.

Introduction: overdentures are removable, muco-implantsupported, complete dentures, stabilized by elements installed on residual roots or implants. A variety of docking systems have been used to support overdentures, including bar-clip systems, balls, magnets and telescoping crowns. Objective: to evaluate, through a literature review, the overdentures retained by bar-clip system, exposing a correct planning, as well as describing protocols of making such devices. Methods: a literature review was carried out in the databases of the Latin American and Caribbean Center on Health Sciences Information (LILACS), Medline, Brazilian Dentistry Bibliography (BBO), the virtual library (SCIELO) and the collection of books from the University of Passo Fundo/RS (UPF). Literature Review: the bar-clip system consists of a plastic bar for casting or already metal and a retention clip. In some situations, the clip-on system is more suitable than other systems, although it has limitations in certain clinical scenarios. The bar-clip system allows considerable retention and stability, resulting in a restoration of the masticatory function, greater safety and great patient satisfaction. Final considerations: most of the studies showed an improvement in the quality of life related to the oral health of the patients after treatment with overdenture compared to the conventional total removable prosthesis.

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