Influence of the severity of Molar-Incisor Hypomineralization on the accumulation of dental biofilm and gingival bleeding

• Ano de defesa: 2021
• Autor(a) principal: Bisaia, Aliny
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Biblioteca Digitais de Teses e Dissertações da USP
• Palavras-chave em Português: Biofilm; Biofilme; Hipomineralização molar incisivo; Molar-Incisor Hypomineralization; Placa dental; Placa dentária
• Link de acesso: https://www.teses.usp.br/teses/disponiveis/25/25145/tde-17112021-161125/

Molar-Incisor Hypomineralization (MIH) is a qualitative defect of the enamel that affects the first permanent molar and may or may not affect the permanents incisors. MIH occurs during the amelogenesis process in which there is a reduction in the percentage of the mineral matrix, making the dental enamel porous and may be susceptible to the accumulation of plaque. The aim of this study was to assess whether the severity of MHI can influence the accumulation of dental plaque in teeth with MIH. A total of 476 children between 6 and 10 years of age enrolled in municipal schools in the city of Bauru, São Paulo, were evaluated. From this, a sample of 490 permanent teeth with MIH was obtained, which were classified according to the HMI-SSS index and analyzed using the Quigley/Hein visible plaque and the gingival bleeding indexes. After obtaining the data, the statistics were performed using the Binominal Logistic Regression test. The results obtained were that age and gender do not influence the accumulation of plaque in teeth with MIH, however the posterior region is 5.13 times more likely to have plaque on the dental surface and the greater the severity unit, it decreases by 9.01% of chances of the patient having dental plaque. Regarding the visible bleeding index, gender, age, and severity were not statistically relevant, but the posterior region is more likely to have gingival bleeding in 98.9% compared to the anterior region. Therefore, the conclusion of this study was that there is no direct relationship between the accumulation of plaque and the severity of MIH.