Prevalence and association of hypomineralized second molars and deciduous teeth caries in 6-7 years children from Kaifeng, China
10.3760/cma.j.cn112144-20250325-00099
- VernacularTitle:开封市6~7岁儿童第二乳磨牙牙釉质矿化不全患病状况及其与乳牙龋的相关性研究
- Author:
Yang LU
1
;
Jingya GUO
1
;
Chunlin LIU
1
;
Zhaoxin ZHANG
1
;
Mingzhen YANG
1
;
Yimeng ZHANG
1
;
Yanfang REN
1
;
Jie JIA
1
Author Information
1. 河南大学第一附属医院口腔科 河南大学口腔医学院，开封 475000
- Publication Type:Journal Article
- Keywords:
Dental enamel;
Dental enamel hypoplasia;
Dental caries;
Hypomineralized second primary molar;
Deciduous teeth caries;
Epidemiology
- From:
Chinese Journal of Stomatology
2025;60(11):1240-1246
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the incidence of hypomineralized second primary molars (HSPM) and deciduous teeth caries in school-aged children of Kaifeng City, and to discuss the association between HSPM and deciduous teeth caries, providing scientific guidance for clinical prevention and treatment.Methods:A cross-sectional study was carried out on first-grade children aged 6-7 years in five primary schools chosen from the eastern, western, southern, northern, and central areas of Kaifeng City by cluster random sampling method. The European Academy of Pediatric Dentistry criteria was used for scoring HSPM. The International Caries Detection and Assessment System (ICDAS-Ⅱ) was used to evaluate caries status.Results:This cross-sectional study was with a sample of 913 children. The prevalence of HSPM was 8.76% (80/913), with 39 boys and 41 girls, the most common type of which was atypical caries [35.00% (28/80)]. Regarding the distribution of HSPM, the incidence in maxilla [6.13% (56/913)] showed no statistically significant difference with that in the mandible [5.70% (52/913)] (χ2=0.16, P=0.692). In terms of severity, 56 cases were severe and 24 cases were mild. The association between HSPM and deciduous teeth caries was analyzed. The results showed that 56 had caries on their second primary molars among the 80 HSPM children. Children with HSPM had an increased risk of second deciduous molar decay compared to non-HSPM children ( OR=1.94, 95 %CI: 1.18-3.19, P<0.05); meanwhile, the deciduous teeth of HSPM children were more prone to suffer caries than those of non-HSPM children ( OR=2.33, 95 %CI: 1.26-4.29, P<0.05). Conclusions:The HSPM prevalence in school-aged children of Kaifeng City was 8.76%. Child with HSPM was more likely to have deciduous teeth caries than non-HSPM child. Special attention should be paid to children with HSPM after the eruption of affected molars.
