Timing of clinical eruption of permanent teeth in children with molar incisor hypomineralization

Abstract

Introduction/Objective. Molar incisor hypomineralization (MIH) is a developmental defect and it has a multifactorial etiology; there could be variations in dental eruptions in the children with this condition. The aim of this study was the comparison of the clinical eruption status of the permanent teeth in children with MIH and patients without MIH. Methods. The study group comprised a total of 300 children (176 females and 124 males aged 6–12 years) who had been diagnosed with MIH but had no systemic disease. The control group comprised 300 age- and sex-matched children without MIH. In the study and control groups, the eruption of the permanent teeth (excluding third molars) was evaluated and compared. In addition, this comparison was performed separately for the males and females in the study and control groups. The independent samples t-test was used for statistical analysis. Results. No statistically significant difference was found between the mean age of the dental eruptions of the children with MIH and that of the children without mineralization disorders (p > 0.05). Regarding the mean age of the dental eruptions, the sex-matched comparison revealed no statistically significant difference between the study and control groups (p > 0.05). Conclusion. Although there was no statistically significant difference in the MIH group and the healthy control group regarding the mean age of the eruption of all teeth, a trend of accelerated dental development in the MIH group was observed.

Keywords

• tooth eruption
• molar incisor hypomineralization
• developmental enamel defect