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BACKGROUND: Some oral conditions can have psychosocial consequences that affect children's daily life and well-being. AIM: To create a structural model for the determination of dental caries, molar-incisor hypomineralization (MIH), and the impact of these conditions and socioeconomic status on schoolchildren's oral health-related quality of life (OHRQoL). DESIGN: A representative cross-sectional study was conducted in Lavras, Brazil, with 1181 female and male schoolchildren 8-9 years of age. OHRQoL was measured using the Brazilian version of the CPQ8-10. Clinical examinations were performed by a calibrated dentist for the diagnosis of dental caries (WHO) and MIH (EAPD). Parents/caregivers answered questionnaires addressing the child's medical history and socioeconomic status. Data were analyzed using structural equation modeling. RESULTS: The model revealed that greater MIH severity (ß = .874; p < .001) and worse socioeconomic status (ß = -.060; p = .001) were associated with a greater number of teeth with caries experience. The higher the number of teeth with caries experience (ß = .160; p = .007) and worse socioeconomic status (ß = -.164; p < .001), the greater the negative impact on OHRQoL. CONCLUSION: The model created showed that dental caries and socioeconomic status had a direct negative impact on the OHRQoL of schoolchildren and MIH had an indirect impact mediated by the occurrence of caries experience.

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Aim: The aim of the present study was to identify precipitating factors of bullying in schoolchildren.Methods: A total of 425 schoolchildren aged eight to eleven years, enrolled in public and private schools in Lavras, Brazil, participated in this cross-sectional study. The schoolchildren answered two questions addressing characteristics that could affect their relationships with peers and completed the Brazilian version of the Olweus Bully/Victim Questionnaire. The characteristics investigated included weight, height, facial features, dentofacial appearance, and other individual factors, such as halitosis and wearing glasses. Parents answered a questionnaire on demographic characteristics. Descriptive analysis and multinomial logistic regression were performed (p ≤ 0.05).Results: Bully-victims were more likely to be enrolled in public schools (OR = 5.43, 95% CI: 1.14-25.91, p = 0.03). Victims of bullying were more likely to report characteristics such as halitosis, wearing glasses, and other aspects (OR = 3.31, 95% CI: 1.14-9.57, p = 0.02), as well as dentofacial appearance (OR = 3.80, 95% CI: 1.38-10.41, p = 0.01), as factors that affected interactions with peers.Conclusions: The findings show that physical appearance, socioeconomic aspect, and individual characteristics are factors associated with victims and bully-victims. Pediatric dentists should discuss these issues with their patients and parents/caregivers when taking patient history.

Objetivo:O objetivo do presente estudo foi identificar os fatores precipitantes do bullying em escolares.Métodos: Um total de 425 escolares de oito a onze anos matriculados em escolas públicas e privadas de Lavras, Minas Gerais, Brasil, participaram deste estudo transversal. Os escolares responderam duas perguntas abordando características que poderiam afetar seu relacionamento com seus pares e preencheram a versão brasileira do Olweus Bully/Victim Questionnaire. As características investigadas foram peso, altura, características faciais, aparência dentofacial e outros fatores individuais, como halitose e uso de óculos. Os pais responderam um questionário sobre características sociodemográficas. Análise descritiva e regressão logística multinomial foram realizadas (p ≤ 0,05). Resultados: As vítimas-intimidadoras eram mais propensas a serem de escolas públicas (OR = 5,43, IC 95%:1,14-25,91, p = 0,03). As vítimas de bullying foram mais propensas a relatar características como halitose, uso de óculos e outros aspectos (OR = 3,31, IC 95%: 1,14-9,57, p = 0,02), bem como aparência dentofacial (OR = 3,80, IC 95%: 1,38-10,41, p = 0,01) como fatores que afetaram suas interações com seus pares. Conclusões:Os achados mostram que a aparência física, o aspecto socioeconômico e as características individuais são fatores associados às vítimas e às vítimas-intimidadoras. Odontopediatras devem discutir essas questões com as crianças/adolescentes e seus pais/responsáveis ao obter a história do paciente.

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Objetivo: verificar a experiência de cárie em molares decíduos e a sua associação com doenças comuns na infância, uso de medicamentos, condições socioeconômicas. Materiais e Métodos: foi realizado um estudo transversal representativo com uma amostra de 1181 crianças entre 8 e 9 anos, de ambos os sexos. O exame clínico foi realizado em ambiente escolar por uma dentista calibrada para diagnóstico de cárie dentária através do índice de dentes cariados, extraídos ou com extração indicada e obturados (Índice ceo-d). Os responsáveis responderam questionários sobre a história médica da criança e condições socioeconômicas. O projeto foi aprovado pelo Comitê de Ética em Pesquisa Local. Os dados foram analisados através da Regressão de Poisson, sendo que as variáveis com p<0,20 foram introduzidas em um modelo multivariado e hierárquico (p<0,05). Razão de Prevalência (RP) e Intervalo de Confiança (IC) de 95% foram calculados. Resultados: a maioria das crianças apresenta cárie em molares decíduos (54,6%). Doenças comuns na infância e uso medicamentos não apresentaram associação estatisticamente significativa com cárie dentária (p>0,05). Estudantes de escolas públicas tiveram uma prevalência 27% maior de (IC95%=1,05-1,59) experiência de cárie em molares decíduos quando comparados aos estudantes de escolas particulares. Menor escolaridade materna também se mostrou associada à experiência de cárie em molares decíduos, sendo que crianças cujas mães tinham até 4 anos de estudo tinham uma prevalência 60% maior de cárie dentária (IC95%:1,19-2,16). Conclusão: a maioria das crianças apresentou experiência de cárie em molares decíduos, mas esta condição não foi associada com doenças e medicamentos utilizados até os 4 anos de idade. Entretanto, crianças de escola pública e cujas mães possuíam menor escolaridade apresentaram maior experiência de cárie.

Objective: to verify the caries experience in deciduous molars and its association with common childhood diseases, medication use, socioeconomic conditions. Materials and Methods: a representative cross-sectional study was carried out with a sample of 1181 children between 8 and 9 years old, of both sexes. The clinical examination was performed in a school environment by a dentist calibrated for the diagnosis of dental caries through the index of decayed teeth, extracted or with the indicated and filled samples (ceo-d index). Those responsible for the child answered about the child's medical history and socioeconomic conditions. The project was approved by the Research Ethics Committee Local. The data were analyzed using an analysis model, and as p<0.20, varied with variables were evaluated in a model and hierarchical. Prevalence Ratio (PR) and 95% Confidence Interval (CI) were calculations. Results: 54.6% of the children had caries experience in the deciduous molars. Common childhood diseases and medication use were not significantly associated with dental caries (p>0.05). Public school students had a prevalence of 27% of students (95%CI=1.05-1.59) of caries experience in deciduous molars when compared to school students. Lower maternal schooling was also associated with caries experience in deciduous molars, with mothers with up to 4 years of schooling having a 60% higher probability of having children with dental caries (95%CI:1.19-2.16). Conclusion: most children had caries experience in deciduous molars, but it was not associated with diseases and medications used between 0 and 4 years old. However, school children and whose mothers had less schooling had a greater experience of caries.

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Purpose: The purpose of this study was to evaluate the association between probable awake bruxism (PAB) and school bullying in children and adolescents. Methods: A total of 380 children and adolescents enrolled in public and private schools in the city of Lavras, Minas Gerais, Brazil, participated in this case-control study. The case group (190 children with PAB) and the control group (190 children without PAB) were matched for sex and age. Data acquisition involved questionnaires administered to the children/adolescents and their parents/caregivers. An oral clinical examination to assess attrition tooth wear was also performed. Descriptive statistics and logistic regression analyses (95 percent confidence interval [95% CI], P<0.05) were conducted. Results: Among the 380 participants, 176 (46.3 percent) were male and 204 (53.7 percent) were female. Children and adolescents who were involved in bullying episodes as victims/bullies (odds ratio [OR] equals 2.92, 95% CI equals 1.07 to 7.95, P=0.036) and victims (OR equals 1.93, 95% CI equals 1.04 to 3.57, P=0.037) were significantly associated with PAB. Children and adolescents who reported sleep problems (OR equals 2.51, 95% CI equals 1.07 to 5.89, P=0.033) were significantly associated with PAB. Conclusion: Based on the results, it was observed that probable awake bruxism is associated with involvement in episodes of school bullying and sleep problems.

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OBJECTIVE: To evaluate the association between the severity of possible sleep bruxism (PSB) and possible awake bruxism (PAB) and attrition tooth wear facets (ATWF) in children/adolescents. METHODS: Four hundred-thirty-four children/adolescents enrolled in schools in Lavras, Brazil, participated in this cross-sectional study. Caregivers answered a questionnaire about their childrens' PSB. Children/adolescents answered a questionnaire about the occurrence of PAB. RESULTS: ATWF among individuals without PSB and PAB was lower than those with moderate/severe PSB (p = 0.038) and moderate/severe PAB (p = 0.003). ATWF in anterior teeth was lower among individuals without PSB compared to those with mild (p = 0.015) and moderate/severe PSB (p = 0.032). ATWF in posterior teeth was lower among individuals without PAB compared to those with mild (p = 0.046) and moderate/severe PAB (p = 0.017). CONCLUSION: The number of attrition tooth wear facets is proportional to the severity of PSB and PAB.

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BACKGROUND: Bruxism is characterized by tooth grinding and/or clenching. AIM: To evaluate the association between possible awake bruxism (PAB) and bullying among individuals aged 8-11 years. DESIGN: A representative cross-sectional study was conducted with 434 eight- to eleven-year-old children/adolescents. Parents/caregivers answered a questionnaire to provide data on sociodemographic characteristics. Children/adolescents answered a questionnaire about the occurrence of PAB. The Olweus Bully/Victim Questionnaire was used. The Poisson regression analysis was performed. RESULTS: Of the 434 children/adolescents, 209 (48.2%) were boys and 225 (51.8%) were girls. The mean age of the children/adolescents was 9.14 years (±1.00). Children/adolescents who were victims of bullying (PR = 1.52, 95% CI = 1.14-2.04, P = .005) and bullies-victims (PR = 2.08, 95% CI = 1.36-3.17, P = .001) presented a higher frequency of PAB than those who were not involved in bullying. CONCLUSION: Children/adolescents who were bullying victims and bullies-victims had a higher frequency of PAB.

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Objective: The aim of the present study was to evaluate the impact of dentalcaries and malocclusion in Brazilian adolescents on the oral health-related qualityof life (OHRQoL) of their families. Methods: A representative cross-sectional studywas conducted with 1168 adolescents from Belo Horizonte, Minas Gerais, Brazil,and their families. Parents/caregivers answered the Brazilian version of the FamilyImpact Scale (B-FIS) to assess the impact of oral conditions on the OHRQoL of thefamilies. Malocclusion was diagnosed using the Dental Aesthetic Index. Dentalcaries was diagnosed using the DMFT index. Three examiners who had undergonetraining and calibration exercises performed the clinical examinations. Sex, ageand social vulnerability of the adolescents were considered confounding variables.Data analysis was performed using bivariate and multivariate Poisson regressionanalysis with robust variance (p<0.05). Results: The analysis adjusted by sex, ageand social vulnerability demonstrated that families of adolescents with untreateddental caries had 29% more impact on Parental/Family Activity (95% CI: 1.11-1.50), 28% on Parental Emotions (95% CI: 1.09-1.51) and 34% on Family Conflict(95% CI: 1.09-1.65) than those without caries. When adjusted for sex and age,malocclusion was associated with Financial Burden (PR=1.39; 95%CI=1.01-1.65),but this variable lost its significance when social vulnerability was included in themultivariate model (PR=1.27; 95% CI: 0.99-1.64). Conclusion: Untreated dentalcaries in adolescents exerted a negative impact on the OHRQoL of their families.Social vulnerability exerted an influence on the impact of malocclusion on theOHRQoL of the families.

Objetivo: O objetivo do presente estudo foi avaliar o impacto da cárie dentária e damá oclusão em adolescentes brasileiros na qualidade de vida relacionada à saúdebucal (QVRSB) de suas famílias. Métodos: Foi realizado um estudo transversalrepresentativo com 1168 adolescentes de Belo Horizonte, Minas Gerais, Brasil, e suasfamílias. Os pais/responsáveis responderam à versão brasileira da Family ImpactScale (B-FIS) para avaliar o impacto das condições bucais na QVRSB das famílias. Amá oclusão foi diagnosticada pelo Índice de Estética Dental e a cárie dentária peloíndice CPOD. Três examinadores calibrados realizaram exames clínicos. Sexo, idadee vulnerabilidade social dos adolescentes foram coletadas como variáveis de confusão.A análise dos dados foi realizada por meio de análise de regressão de Poisson bivariadae multivariada com variância robusta (p<0,05). Resultados: Resultados ajustados porsexo, idade e vulnerabilidade social demonstraram que famílias de adolescentes comcárie dentária não tratada tiveram 29% mais impacto na Atividade Parental/Familiar(IC95% = 1,11-1,50), 28% nas Emoções Parentais (IC95% = 1,09-1,51) e 34% em ConflitoFamiliar (IC 95% = 1,09-1,65) do que aqueles sem cárie. Quando ajustada para sexo eidade, a má oclusão foi associada ao Encargo Financeiro (RP = 1,39; IC95% = 1,01-1,65); entretanto, perdeu significância quando a vulnerabilidade social foi incluída nomodelo multivariado (RP = 1,27; IC95% = 0,99-1,64). Conclusão: A cárie dentária nãotratada em adolescentes exerceu impacto negativo na QVRSB de suas famílias. Avulnerabilidade social influenciou a ausência de impacto da má oclusão na QVRSBdas famílias.

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Malocclusion is public health problem because of its high prevalence, treatment possibility, and impact on the individual's quality of life. This article aims to determining the prevalence of malocclusion in adolescents and to test its association with social vulnerability. A representative transversal study was performed with 1612 adolescents aged between 11 and 14 years old who came from public and private schools in Belo Horizonte, Brazil. The adolescents were examined by three calibrated examiners for diagnosis of malocclusion, using the Dental Aesthetic Index. The Social Vulnerability Index from Belo Horizonte was used to determine the degree of social vulnerability from adolescents. The data were analyzed using Poisson regression with robust variance (p<0,05). Most adolescents presented absence/minor malocclusion (68.7%). Dental crowding was diagnosed in 51.9% from the sample, diastema in 23.7%, anterior open bite in 7.6 %. Malocclusion was associated with social vulnerability (PR=1.25;95% CI=1.01-1.55). Dental crowding was the most prevalent type of malocclusion. The more socially vulnerable adolescents had worse indicators of malocclusion.

A má oclusão é um problema de saúde pública devido à alta prevalência, possibilidade de tratamento e por interferir na qualidade de vida dos indivíduos. O objetivo deste artigo é determinar a prevalência da má oclusão em adolescentes e testar sua associação com indicador de vulnerabilidade social. Foi realizado um estudo transversal representativo com 1.612 adolescentes, entre 11 e 14 anos de idade, de escolas públicas e privadas de Belo Horizonte, Brasil. Os adolescentes foram avaliados por três examinadores calibrados para o diagnóstico de má oclusão, utilizando o Índice Estético Dental. O Índice de Vulnerabilidade Social de Belo Horizonte foi utilizado para determinar o grau de vulnerabilidade social dos adolescentes. Os dados foram analisados através da regressão de Poisson com variância robusta (p < 0,05). A maioria dos adolescentes apresentou má oclusão ausente/leve (68,7%). Diagnosticou-se apinhamento dentário em 51,9% da amostra, diastema em 23,7%, mordida aberta anterior em 7,6 %. A má oclusão mostrou-se associada à vulnerabilidade social (RP = 1,25;95% IC = 1,01-1,55). O apinhamento dentário foi o tipo de má oclusão mais prevalente. Os adolescentes mais vulneráveis socialmente apresentaram piores indicadores de má oclusão.

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Resumo A má oclusão é um problema de saúde pública devido à alta prevalência, possibilidade de tratamento e por interferir na qualidade de vida dos indivíduos. O objetivo deste artigo é determinar a prevalência da má oclusão em adolescentes e testar sua associação com indicador de vulnerabilidade social. Foi realizado um estudo transversal representativo com 1.612 adolescentes, entre 11 e 14 anos de idade, de escolas públicas e privadas de Belo Horizonte, Brasil. Os adolescentes foram avaliados por três examinadores calibrados para o diagnóstico de má oclusão, utilizando o Índice Estético Dental. O Índice de Vulnerabilidade Social de Belo Horizonte foi utilizado para determinar o grau de vulnerabilidade social dos adolescentes. Os dados foram analisados através da regressão de Poisson com variância robusta (p < 0,05). A maioria dos adolescentes apresentou má oclusão ausente/leve (68,7%). Diagnosticou-se apinhamento dentário em 51,9% da amostra, diastema em 23,7%, mordida aberta anterior em 7,6 %. A má oclusão mostrou-se associada à vulnerabilidade social (RP = 1,25;95% IC = 1,01-1,55). O apinhamento dentário foi o tipo de má oclusão mais prevalente. Os adolescentes mais vulneráveis socialmente apresentaram piores indicadores de má oclusão.

Abstract Malocclusion is public health problem because of its high prevalence, treatment possibility, and impact on the individual's quality of life. This article aims to determining the prevalence of malocclusion in adolescents and to test its association with social vulnerability. A representative transversal study was performed with 1612 adolescents aged between 11 and 14 years old who came from public and private schools in Belo Horizonte, Brazil. The adolescents were examined by three calibrated examiners for diagnosis of malocclusion, using the Dental Aesthetic Index. The Social Vulnerability Index from Belo Horizonte was used to determine the degree of social vulnerability from adolescents. The data were analyzed using Poisson regression with robust variance (p<0,05). Most adolescents presented absence/minor malocclusion (68.7%). Dental crowding was diagnosed in 51.9% from the sample, diastema in 23.7%, anterior open bite in 7.6 %. Malocclusion was associated with social vulnerability (PR=1.25;95% CI=1.01-1.55). Dental crowding was the most prevalent type of malocclusion. The more socially vulnerable adolescents had worse indicators of malocclusion.

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Objetivo:O objetivo desta revisão sistemática foi avaliar os efeitos da expansão rápida da maxila em indivíduos com síndrome de Down. Métodos:Buscas em quatro bases de dados eletrônicas (PubMed, Medline via Ovid, Web of Science e Scopus) foram realizadas para identificação de artigos avaliando os efeitos da expansão rápida da maxila em indivíduos com síndrome de Down. Títulos/resumos foram avaliados por dois autores de forma independente. Aqueles que preenchiam os critérios de elegibilidade eram incluídos. Os que contivessem informações insuficientes para uma decisão, tinha o texto completo recuperado. Após a avaliação dos textos completos, referências que atendessem os critérios de elegibilidade eram incluídas. Foi feita também uma busca manual na lista de referências dos artigos incluídos. Os dados dos artigos incluídos foram extraídos. A avaliação de qualidade dos estudos foi feita com a ferramenta Cochrane e o MINORS. Resultados:As buscas recuperaram 289 referências. Após a remoção de 37 duplicatas, os títulos/resumos de 252 referências foram avaliados para aplicação dos critérios de elegibilidade. Destes 252, dois preencheram os critérios de elegibilidade e foram incluídos. Seis não tinham informações suficientes para uma decisão, havendo a necessidade da recuperação do texto completo. Nenhum deles foi incluído. No primeiro estudo incluído, indivíduos com síndrome de Down submetidos a esse tratamento apresentaram uma melhora significante nos desfechos ronco, respiração bucal, inquietação, acordar repentinamente com suspiro, hábito de babar, articulação das palavras, protusão da língua e estética facial (p< 0,05) quando comparados aos indivíduos do grupo controle. No segundo estudo, a maioria dos indivíduos com síndrome de Down submetidos a esse tratamento não apresentaram qualquer complicação. Conclusão:A expansão rápida da maxila promove efeitos positivos em indivíduos com síndrome de Down. (AU)

Objective: This systematic review sought to evaluate the effects of rapid maxillary expansion on individuals with Down syndrome. Methods: Searches were conducted in four electronic databases (PubMed, Medline Ovid, Web of Science, and Scopus) to identify articles assessing the effects of rapid maxillary expansion on individuals with Down syndrome. Titles/abstracts were evaluated separately by two authors. Those who met the eligibility criteria were included. For those abstracts that presented insufficient information to reach a decision, the full text was retrieved. After the evaluation of the full texts, references that met the eligibility criteria were included. A manual search was also performed in the reference list of the articles included in this study. Data from the included articles were extracted. The quality evaluation of the studies was carried out with the Cochrane tool and MINORS. Results:The search retrieved 289 references. After the removal of 37 duplicates, the titles/abstracts of 252 references were evaluated, and the eligibility criteria were applied. Of these 252 references, two met the eligibility criteria and were included. Six titles/abstracts did not have sufficient information for a decision, and a full text retrieval was necessary, none of which was included. In the first study, individuals with Down syndrome who underwent rapid maxillary expansion presented a significant improvement in the outcomes of snoring, mouth breathing, restlessness, waking up suddenly, drooling, articulation of words, tongue protrusion, and facial esthetics (p < 0.05) when compared with individuals in the control group. In the second, most individuals with Down syndrome undergoing rapid maxillary expansion present no complications. (AU)

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The aim of this study was to assess the prevalence and discriminate the associated factors between enamel fractures and other trauma/trauma sequelae in 8 to 10-year-old Brazilian schoolchildren. A representative sample of 1,201 children from public and private schools were enrolled in this cross-sectional study. Questionnaires about sociodemographic characteristics were answered by parents. The outcome variable (traumatic dental injury, TDI) was multi-categorized. Independent individual variables were sex, age, number of residents in household, parents/caregivers' level of education, family income, dental caries, and overjet. Type of school was considered an independent contextual variable. Multilevel analysis, bivariate, and multivariate multinomial logistic regression models were performed. The prevalence of TDI was 14.0% (2.8% with other trauma/trauma sequelae). The multilevel analysis revealed no significant difference between the type of school and TDI. The multinomial logistic regression showed that boys (OR = 2.3; 95%CI: 1.1-4.8), older children (OR = 1.8; 95%CI: 1.1-3.0) and individuals with an overjet > 3 mm (OR = 2.5; 95%CI: 1.0-6.2) were more likely to present other trauma/trauma sequelae. Enamel fracture was not significantly associated with any variables. The prevalence of TDI in 8 to 10-year-old schoolchildren was 14% but only 2.8% of other trauma/trauma sequelae. Differences regarding the associated factors of TDI involving enamel fracture or other trauma/trauma sequelae were detected, suggesting that the different TDI classification cannot be evaluated as a single category.

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OBJECTIVE: The aim of the present cross-sectional study was to assess the impact of malocclusion on the quality of life of children aged 8 to 10 years attending public elementary schools in Belo Horizonte, State of Minas Gerais, Brazil. METHODS: The Brazilian version of the Child Perceptions Questionnaire 8-10 (CPQ8-10) was used to evaluate oral health-related quality of life. The children were examined for the diagnosis of malocclusion using the Dental Aesthetic Index (DAI). The data were analyzed by bivariate and multivariate descriptive statistics using Poisson regression at a 5% significance level. A total of 270 children participated in the study. RESULTS: Children with normal occlusion or mild malocclusion (DAI ≤ 25) were 56% less likely (95%CI: 0.258-0.758; p= 0.003) to have their quality of life affected compared with children diagnosed with extremely severe malocclusion (DAI ≥ 36). Children with a maxillary anterior overjet ≥ 3 mm had higher CPQ8-10 mean scores (19.4; SD = 17.1) than those with an overjet < 3 mm (13.6; SD = 11.7; p= 0.038). CONCLUSIONS: Extremely severe malocclusion and pronounced maxillary anterior overjet were associated with a negative impact on quality of life.

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This study sought to determine the prevalence of developmental defects of enamel (DDE) among preschool children and investigate associations with sociodemographic and socioeconomic factors and weight status. A cross-sectional study was conducted with 118 children aged 3 to 5 years. Data were collected via clinical examinations and a self-administered questionnaire completed by the parents. The diagnosis of DDE was performed using the modified DDE Index. Information on socioeconomic indicators (mother's schooling, monthly income per capita), child's sex and age, and age of mother at the birth of the child were obtained by questionnaire. The children's weight status was determined based on weight-for-age at the time of the exam. Statistical analysis involved the chi-squared test and Poisson regression with robust variance. The prevalence of DDE was 50.0%. DDE were more frequent in males (p = 0.025) and children whose families were classified as being at poverty line (p = 0.040). In the Poisson model controlled for child's sex and mother's schooling, children whose families were classified as being at the poverty line had a greater prevalence rate of DDE. In conclusion, the prevalence of DDE was high in the present sample and associated with lower household income. Weight status was not associated with DDE.

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Abstract This study sought to determine the prevalence of developmental defects of enamel (DDE) among preschool children and investigate associations with sociodemographic and socioeconomic factors and weight status. A cross-sectional study was conducted with 118 children aged 3 to 5 years. Data were collected via clinical examinations and a self-administered questionnaire completed by the parents. The diagnosis of DDE was performed using the modified DDE Index. Information on socioeconomic indicators (mother's schooling, monthly income per capita), child's sex and age, and age of mother at the birth of the child were obtained by questionnaire. The children's weight status was determined based on weight-for-age at the time of the exam. Statistical analysis involved the chi-squared test and Poisson regression with robust variance. The prevalence of DDE was 50.0%. DDE were more frequent in males (p = 0.025) and children whose families were classified as being at poverty line (p = 0.040). In the Poisson model controlled for child's sex and mother's schooling, children whose families were classified as being at the poverty line had a greater prevalence rate of DDE. In conclusion, the prevalence of DDE was high in the present sample and associated with lower household income. Weight status was not associated with DDE.

Resumo Objetivou-se avaliar a prevalência de defeitos de desenvolvimento de esmalte (DDE) em pré-escolares e investigar a associação com fatores sociodemográficos e socioeconômicos e peso da criança. Foi realizado um estudo transversal com 118 crianças de três a cinco anos de idade. Os dados foram coletados por meio de exame clínico e questionário autoaplicável respondido pelos pais. Para o diagnóstico de DDE utilizou-se o Developmental Defects of Enamel Index. Informações sobre indicadores socioeconômicos (escolaridade da mãe e renda familiar per capita), gênero e idade da criança e idade da mãe ao nascimento da criança foram obtidas do questionário. O status de peso foi determinado baseando-se no peso e idade da criança no momento do exame. A análise estatística incluiu teste do qui-quadrado e regressão de Poisson. A prevalência de DDE foi 50.0%, sendo mais frequente em crianças do sexo masculino (p = 0.025) e provenientes de famílias incluídas na linha de pobreza (p = 0.040). No modelo de regressão de Poisson ajustado para gênero e escolaridade da mãe, observou-se que as crianças provenientes de famílias incluídas na linha de pobreza apresentaram maior prevalência de DDE. Conclui-se que a prevalência de DDE foi alta e associada com renda familiar per capita. O peso da criança não foi associado com DDE.

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ABSTRACT Objective: The aim of the present cross-sectional study was to assess the impact of malocclusion on the quality of life of children aged 8 to 10 years attending public elementary schools in Belo Horizonte, State of Minas Gerais, Brazil. Methods: The Brazilian version of the Child Perceptions Questionnaire 8-10 (CPQ8-10) was used to evaluate oral health-related quality of life. The children were examined for the diagnosis of malocclusion using the Dental Aesthetic Index (DAI). The data were analyzed by bivariate and multivariate descriptive statistics using Poisson regression at a 5% significance level. A total of 270 children participated in the study. Results: Children with normal occlusion or mild malocclusion (DAI ≤ 25) were 56% less likely (95%CI: 0.258-0.758; p= 0.003) to have their quality of life affected compared with children diagnosed with extremely severe malocclusion (DAI ≥ 36). Children with a maxillary anterior overjet ≥ 3 mm had higher CPQ8-10 mean scores (19.4; SD = 17.1) than those with an overjet < 3 mm (13.6; SD = 11.7; p= 0.038). Conclusions: Extremely severe malocclusion and pronounced maxillary anterior overjet were associated with a negative impact on quality of life.

RESUMO Objetivo: o objetivo do presente estudo transversal foi avaliar o impacto da má oclusão na qualidade de vida de crianças na faixa etária de 8 a 10 anos de idade, estudantes de escolas da rede pública da cidade de Belo Horizonte, estado de Minas Gerais, Brasil. Métodos: o instrumento utilizado para medir a qualidade de vida relacionada à saúde bucal foi a versão brasileira do Child Perceptions Questionnaire 8-10 (CPQ8-10). As crianças foram examinadas para diagnóstico de má oclusão utilizando-se o Dental Aesthetic Index (DAI). A análise dos dados foi realizada por meio de estatística descritiva, bivariada e multivariada por meio da regressão de Poisson, com nível de significância de 5%. Participaram do estudo 270 crianças. Resultados: crianças com oclusão normal ou má oclusão leve (DAI ≤25) apresentaram 56% menos probabilidade (IC 95%: 0,258-0,758; p= 0,003) de impacto na qualidade de vida, comparadas com crianças diagnosticadas com má oclusão muito grave (DAI ≥ 36). Crianças com sobressaliência superior anterior ≥ 3 mm apresentaram maiores escores médios de CPQ8-10 (19,4; DP = 17,1) do que aqueles com sobressaliência < 3 mm (13,6; DP=11,7; p= 0,038). Conclusões: a má oclusão muito grave e a sobressaliência superior anterior aumentada se associaram ao impacto negativo na qualidade de vida.

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The aim was to evaluate the prevalence of alcohol consumption, binge drinking and their association with social capital and socioeconomic factors among Brazilian adolescents students. A cross-sectional study was carried out with a randomly selected representative sample of 936 adolescents aged 15 to 19 years. Information on alcohol consumption, social capital and socioeconomic status was collected using the Alcohol Use Disorders Identification Test, the Integrated Questionnaire for the Measurement of Social Capital and Social Vulnerability Index, respectively. The prevalence of alcohol consumption was 50.3% and binge drinking 36% the last year. Adolescents who reported believing that people in their community could help solve a collective problem (with the water supply) and those classified as having high social vulnerability had lower likelihood of binge drinking (PR = 0.776 [95%CI:0.620 to 0.971] and PR = 0.660 [95%CI:0.542 to 0.803], respectively). The prevalence of alcohol consumption and binge drinking the last year is high among participants. Those with higher socioeconomic status as well as lower perceptions of community capital social are more likely to display binge-drinking behavior.

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Abstract The aim was to evaluate the prevalence of alcohol consumption, binge drinking and their association with social capital and socioeconomic factors among Brazilian adolescents students. A cross-sectional study was carried out with a randomly selected representative sample of 936 adolescents aged 15 to 19 years. Information on alcohol consumption, social capital and socioeconomic status was collected using the Alcohol Use Disorders Identification Test, the Integrated Questionnaire for the Measurement of Social Capital and Social Vulnerability Index, respectively. The prevalence of alcohol consumption was 50.3% and binge drinking 36% the last year. Adolescents who reported believing that people in their community could help solve a collective problem (with the water supply) and those classified as having high social vulnerability had lower likelihood of binge drinking (PR = 0.776 [95%CI:0.620 to 0.971] and PR = 0.660 [95%CI:0.542 to 0.803], respectively). The prevalence of alcohol consumption and binge drinking the last year is high among participants. Those with higher socioeconomic status as well as lower perceptions of community capital social are more likely to display binge-drinking behavior.

Resumo O objetivo foi avaliar prevalência do consumo de bebida alcoólica e associação com o capital social e fatores socioeconômicos em estudantes adolescentes. Estudo transversal realizado com amostra representativa aleatória de 936 adolescentes de 15 a 19 anos. Informações sobre o consumo de álcool no último ano, capital social e condição socioeconômica foram levantadas utilizando-se o Teste de Triagem para Abordar Problemas Relacionados com Álcool (AUDIT), Questionário Integrado para Medir Capital Social e Índice de Vulnerabilidade Social, respectivamente. Prevalência de consumo de bebida alcoólica foi de 50,3% e consumo abusivo de álcool 36,0%, no último ano. Os adolescentes que relataram acreditar que as pessoas em sua comunidade possam ajudar a resolver problemas coletivos (como o abastecimento de água) e os classificados como pertencentes ao grupo de alta vulnerabilidade social apresentaram menor probabilidade de consumo abusivo de álcool (RP = [IC95%:0,620-0,971] 0,776 e PR = [IC95%:0,542-,803] 0,660). As prevalências de consumo de bebidas alcoólicas e consumo abusivo de álcool no último ano foram altas. Adolescentes com melhor condição socioeconômica e menor percepção do capital social foram mais propensos a apresentar um comportamento de consumo abusivo de bebidas alcoólicas.

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Abstract The aim of this study was to assess the prevalence and discriminate the associated factors between enamel fractures and other trauma/trauma sequelae in 8 to 10-year-old Brazilian schoolchildren. A representative sample of 1,201 children from public and private schools were enrolled in this cross-sectional study. Questionnaires about sociodemographic characteristics were answered by parents. The outcome variable (traumatic dental injury, TDI) was multi-categorized. Independent individual variables were sex, age, number of residents in household, parents/caregivers' level of education, family income, dental caries, and overjet. Type of school was considered an independent contextual variable. Multilevel analysis, bivariate, and multivariate multinomial logistic regression models were performed. The prevalence of TDI was 14.0% (2.8% with other trauma/trauma sequelae). The multilevel analysis revealed no significant difference between the type of school and TDI. The multinomial logistic regression showed that boys (OR = 2.3; 95%CI: 1.1-4.8), older children (OR = 1.8; 95%CI: 1.1-3.0) and individuals with an overjet > 3 mm (OR = 2.5; 95%CI: 1.0-6.2) were more likely to present other trauma/trauma sequelae. Enamel fracture was not significantly associated with any variables. The prevalence of TDI in 8 to 10-year-old schoolchildren was 14% but only 2.8% of other trauma/trauma sequelae. Differences regarding the associated factors of TDI involving enamel fracture or other trauma/trauma sequelae were detected, suggesting that the different TDI classification cannot be evaluated as a single category.

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We investigated the anti-caries effects of an experimental propolis varnish in vivo, and further tested its toxicity against fibroblasts. Fifty-six SPF female Wistar rats were infected with Streptococcus mutans UA159 (SM) and allocated into four groups (n = 14/group): G1, propolis varnish (15%/PV); G2, chitosan varnish (CV/vehicle); G3, gold standard (GS/Duraphat®); and G4, untreated. The animals received a single varnish application on their molars and were submitted to a high cariogenic challenge (Diet-2000, 56% sucrose, and 5% sucrose-added water, ad libitum) for 4 weeks. Total cultivable microbiota and SM were counted, and smooth-surface and sulcal caries were scored. PV, CV and GS cytotoxic effects were tested against fibroblasts. The data were analyzed using ANOVA with the Tukey-Kramer test (p ≤ 0.05). Total microbiota and SM counts did not differ among the treatments (p = 0.78), or in relation to the untreated group (p = 0.52). PV reduced development of smooth-surface enamel caries compared with the untreated group (p = 0.0018), with no significant difference from GS (p = 0.92); however, the PV effects were no longer observed when the dentin was affected. Neither PV nor GS prevented enamel sulcal lesion onset, but GS significantly reduced the severity of dentinal sulcal lesions (p < 0.0001). No significant difference was observed in fibroblast viability between PV and GS (p < 0.0001). In conclusion, PV prevented smooth-surface enamel caries and showed low cell toxicity. Nevertheless, due to the high cariogenic challenge, its effects were not sustained throughout the experiment. Further studies are encouraged to establish a protocol to sustain the long-term anti-caries activity of PV in the oral cavity.

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BACKGROUND/OBJECTIVES: The aesthetic impact of malocclusion can have negative repercussions on quality of life, social interaction, interpersonal relationships, and psychological well-being. The aim of this study was to evaluate the impact of malocclusion on the quality of life of Brazilian adolescents. METHODS: A representative cross-sectional study of 1612 adolescents from Belo Horizonte, Minas Gerais was conducted. The adolescents responded to the Brazilian version of the Child Perception Questionnaire (CPQ11-14-ISF:16) to assess the impact of the condition on quality of life. Cases of malocclusion were diagnosed using the Dental Aesthetic Index while clinical examination was performed by three calibrated examiners. Data regarding traumatic dental injuries, dental caries, gender, type of school, age and social vulnerability was collected. Data analysis was performed using bivariate and multivariate Poisson regression with robust variance (P < 0.05). RESULTS: The prevalence of malocclusion was 31.3%. The presence of definite malocclusion (PR = 1.28; CI = 1.13-1.45), severe malocclusion (PR = 1.24; CI = 1.04-1.47) and handicapping malocclusion (PR = 1.55; CI = 1.31-1.84) was associated with a greater negative impact on Emotional Well-Being. The presence of definite malocclusion (PR = 1.18; CI = 1.02-1.36), severe malocclusion (PR = 1.46; CI = 1.21-1.76) and handicapping malocclusion (PR = 1.61; CI = 1.35-1.94) was also associated with a greater negative impact on Social Well-Being. CONCLUSIONS: Adolescents with handicapping malocclusion, where the need for treatment was mandatory, suffered from a greater negative impact on quality of life, with emotional and social aspects most affected.

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