Características orofaciais, respiratórias e polissonográficas de crianças de 6 a 12 anos com bruxismo

• Ano de defesa: 2010
• Autor(a) principal: Anselmo, Maria Rita Giovinazzo [UNIFESP]
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de São Paulo (UNIFESP)
• Palavras-chave em Português: Dentição; Polissonografia; Vias aéreas superiores; Bruxismo
• Link de acesso: http://repositorio.unifesp.br/handle/11600/9162

Introduction: The aim of this study was to compare the orofacial and polysomnographic variables in a group of children aged 6 to 12 years of a elementary school with and without bruxism. Methods: We evaluated 128 children aging 6 to 12 years old, from a elementary school in Sao Paulo, Brazil. We selected those who fulfilled the questionnaire criteria for bruxism, to have bruxism ¡V test group (n=87), often or very often during a week. Those children who responded very rare or never were selected as a control group (n=41). Both groups underwent comprehensive dental, upper airway and orofacial evaluation. In the bruxism group full polisomnography was performed in order to confirm the presence of bruxism and other sleep disturbances potentially associated. Results: The weight of the children with bruxism mean was: (32.57 „b 9.98) vs (36.41 10.45) (p = 0.048); in the control group. The frequency of morning headache among bruxism group was higher; (1.10 0.79) vs (0.54 0.64) p < 0.001) in control group. Children with bruxism are the most brachycephalic (12,6%) compared to children in the control group (0%) (p = 0.008). The facial muscle pattern of children with bruxism significantly varied in type, while in the control group the majority had long facial muscles (p < 0.001). The dentition of the bruxism group significantly varied in type (deciduous, mixed and permanent, while the control group had only mixed dentition) (p = 0.003). The supero-inferior relationship in bruxism group was again more variable (regular, deep, bite top, open) while in control group,we only found deep and open bitewere were found (p < 0.001). In a similar fashion the latero-lateral relation (normal, sharp bite, anterior crossbite and crossbite side) predominated in bruxism group , while in control group only sharp bite and crossbite side werefound (p < 0.001) (62.1%) of the test group presented pharyngeal tonsils . 70% vs (36.6%) of the control group (p=0.007). The creak scores in test group were significantly higher than in the control group (p < 0.001). Finally, among bruxism children group, the number of tonic bruxism was significantly higher on S2 (p = 0.002) and REM (p < 0.001) sleep stages, while phasic bruxismo occurred more frequently on S2 (p = 0,002) and S4 (p < 0.001) NREM sleep. Conclusions: The results suggest that children with bruxism have lower body weight and more headache in the morning. They are more dolicocephalic and have more variation of facial muscle pattern and facial symmetry. These children also have more dentition abnormalities compared to non-bruxism ones. On the other hand they had smaller pharyngeal tonsils. Finally tonic and phasic bruxism episodes presented distinct distribution through sleep stages.