Impact of molar incisor hypomineralization on oral hygiene and gingival health in 8–15‐years‐old children

Abstract

Background: This study aimed to evaluate the impact of molar incisor hypomineralization (MIH) on oral hygiene and gingival health, and to investigate the relationship between these factors and the severity of MIH. Methods: A total of 72 children (48 with MIH and 24 healthy controls) were included in the study. MIH severity was categorized into three groups:mild (n = 16), moderate (n = 16) and severe (n = 16).The modified-Quigley Hein plaque index (m-QHPI) was used to determine oral hygiene, and the gingival index (GI) and bleeding on probe (BOP) were used to determine the gingival status of each subject. The Mann-Whitney U test was used for binary comparisons and the Kruskal-Wallis test was used for multiple comparisons. Results: The m-QHPI,GI and BOP were significantly higher in all individuals with MIH compared with the control group. The m-QHPI increased with the severity of MIH (P < 0.001).The GI of the MIH-affected teeth had highly significant increases according to MIH severity (P < 0.05). The mean BOP score for the entire mouth was significantly higher in patients with severe and moderate MIH than mild MIH (P < 0.001). The mean BOP for affected teeth with moderate and severe MIH was significantly higher than the mean BOP of mildly affected teeth (P < 0.05). Conclusion:The presence and severity of MIH might be associated with increased plaque accumulation and gingival inflammation.

MIH and Dental Caries in Children: A Systematic Review and Meta-Analysis

“…It is probable that the correlation between MIH and increased experience of caries in children is due to the fact that hypersensitivity acts as a barrier to the proper and regular performance of oral hygiene measures at home [ 96 ]. A recent clinical study on oral hygiene and gingival health among children with MIH showed that plaque index, gingival index, and bleeding on probing were significantly higher in the MIH group than in the control group, and they also correlated with MIH severity [ 97 ]. In fact, Raposo et al demonstrated in a large sample of children with MIH that dental hypersensitivity affects more than half of the molars with either moderate or severe forms of MIH.…”

Molar incisor hypomineralization and oral health-related quality of life in Brazilian children: A narrative review of current evidence

“…Teeth affected by MIH exhibit heightened susceptibility to the rapid development of caries due to increased enamel porosity, structural loss, and exposure of dentinal tubules, thereby facilitating pulpal inflammation (Crombie et al, 2009;Mangum et al, 2010). The complications in teeth affected by MIH are exacerbated by children's tendencies to avoid brushing, leading to increased dental plaque stagnation (Türkmen & Özükoç, 2022).…”