Factors associated with molar–incisor hypomineralisation in schoolchildren aged 8–10 years: a case–control study

Background The aetiology of molar–incisor hypomineralisation (MIH) is multifactorial and may involve genetic and environmental factors. Aim To verify the factors associated with MIH in schoolchildren from 8 to 10 years of age. Design This is a case–control study with a sample consisting of children aged 8 to 10 years, paired by gender and school type, in a ratio of 1:3. The case group included 186 children with MIH and the control included 558 children without MIH. Data were collected through a semi‐structured questionnaire and clinical examination. Chi‐square, linear‐by‐linear, Mann–Whitney, and logistic regression tests were conducted. A value of P