?rea de concentra??o: Odontopediatria. / Linha de pesquisa: Epidemiologia e controle das doen?as bucais. / Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-07-20T20:17:01Z No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-07-28T17:13:01Z (GMT) No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-07-28T17:13:01Z (GMT). No. of bitstreams: 2 ednele_fabyene_primo_miranda.pdf: 2236077 bytes, checksum: 899a017f3e19d61a71fc17d64a10d45b (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Caracter?sticas oclusais est?o associadas ? ocorr?ncia de traumatismo dent?rio em pr?-escolares. Sobressali?ncia acentuada tem sido frequentemente apontada como poss?vel fator de risco para ocorr?ncia de traumatismo dent?rio. No entanto, a mordida aberta anterior, as mordidas cruzadas anterior e posterior e o apinhamento dental t?m sido pouco investigados e apresentam resultados n?o conclusivos na denti??o dec?dua. Assim, o presente estudo buscou investigar a influ?ncia das caracter?sticas oclusais na ocorr?ncia de traumatismo dent?rio em pr?-escolares. Trata-se de um estudo caso-controle de base populacional (1:1), realizado na cidade de Diamantina - Brasil. Ap?s a realiza??o de um estudo transversal as crian?as de 3 a 5 anos de idade com traumatismo dent?rio foram sorteadas para compor o grupo caso (n=200). O grupo controle foi composto por crian?as sem hist?ria de traumatismo dent?rio e pareadas com as crian?as do grupo caso empregando os seguintes crit?rios (1.escola, 2.sexo, 3.idade). As vari?veis independentes foram coletadas por serem de interesse para o estudo (caracter?sticas oclusais) ou por atuarem como potenciais confundidoras (vari?veis sociodemogr?ficas, h?bitos de suc??o e cobertura labial). Os valores de kappa intraexaminador e inter-examinador foram superiores a 0,80 para todas as condi??es bucais avaliadas. Para a an?lise dos dados utilizou-se o programa SPSS 22.0. Foram realizadas as an?lises descritiva, univariada e de regress?o log?stica simples e m?ltipla. Para cada vari?vel de interesse (caracter?stica oclusal), foram criados 5 modelos de ajuste para as vari?veis confundidoras. Na an?lise univariada, observou-se associa??o estatisticamente significativa para as vari?veis, apinhamento anterior superior (p=0,024), mordida aberta (p=<0,001), sobressali?ncia (p=<0,001) e cobertura labial (p=<0,001). Ap?s a regress?o log?stica, a mordida aberta anterior manteve a signific?ncia estat?stica nos cinco modelos de ajuste (OR= 3,80; IC 95%=1,42 ? 10,16). As vari?veis apinhamento anterior superior (OR=2,14; IC 95%=1,00 ? 4,63) e sobressali?ncia (OR= 1,12; IC 95%=0,58 ? 2,17) permaneceram associadas ao grupo caso, independentemente das vari?veis de confundimento (vari?veis sociodemogr?ficas, h?bitos de suc??o e cobertura labial), mas perderam a signific?ncia no modelo 5, quando foram ajustadas por outros tipos de m? oclus?o. Conclui-se que a mordida aberta anterior permaneceu fortemente associada ao traumatismo dent?rio, independentemente das vari?veis de confus?o e de outros tipos de m? oclus?o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Odontologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / Occlusal characteristics are associated with the occurrence of dental trauma in preschool children. Accentuated overjet has been frequently pointed as a possible risk factor for dental trauma. However, anterior open bite, anterior and posterior crossbite and dental crowding have been little investigated and show non-conclusive results in the deciduous teeth. Therefore, the present study sought to investigate the influence of occlusal characteristics in the occurrence of dental trauma in preschool children. This is a population based case-control study (1:1), held in the city of Diamantina-Brazil. After conducting a cross-sectional study, children between the ages of 3 to 5 years old with dental trauma were randomly chosen to the case group (n=200). The control group was made of children without dental trauma history and paired with the case group children using the following criteria (1. school, 2. gender, 3. age). The independent variables were collected because of the studies? interest (occlusal characteristics) or because of its potential as a confounding factor (sociodemographic variables, suction habits and lip coverage). The intra and inter-examiner kappa values were greater than 0,80 for all of the oral conditions assessed. The SPSS 22.0 program was used for data analysis. The descriptive, univariate, simple and multiple logistics regression analysis were performed. For each variable of interest (occlusal characteristic), five adjustment models for the confounding variables were created. In the univariate analysis, statistically significant association was observed for the variables: superior anterior crowding (p=0,024), open bite (p=<0,001), overjet (p=<0,001) and lip coverage (p=<0,001). After logistic regression, anterior open bite kept the statistic significance in all five adjustment models (OR= 3,80; IC 95%=1,42 ? 10,16). The anterior superior crowding variable (OR=2,14; IC 95%=1,00 ? 4,63) and the overjet variable (OR= 1,12; IC 95%=0,58 ? 2,17) remained associated with the case group, regardless of the confounding variables (sociodemographic variables, suction habits and lip coverage), but lost significance in model 5, when adjusted for other types of malocclusion. In conclusion, anterior open bite remained strongly associated with dental trauma, regardless of the confounding variables and of other types of malocclusion.