A study of association of caries prevalence in first permanent molars with caries experience in primary molars
10.3760/cma.j.issn.1002-0098.2012.s1.017
- VernacularTitle:第一恒磨牙患龋与乳磨牙患龋相关性的研究
- Author:
Xiu-Rong QIN
1
;
Lin-Qin SHAO
;
Long MA
;
Li-Xia ZHANG
Author Information
1. 250001,济南市口腔医院儿童口腔科
- Keywords:
Primary tooth;
Dental caries;
DMF index;
Caries rate
- From:
Chinese Journal of Stomatology
2012;47(z1):77-80
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the association of first permanent molars caries prevalence with primary molar caries experience.Methods Cluster,stratified and random sampling method,was used and 3680 children 6-to 10-year-old were randomizly selected from primary schools of Jinan city.Caries status of first permanent molars,decayed-missed-filled surfaces (DMFS,dmfs),decayed-missed-filled teeth (DMFT,dmft),were examined.Chi-square test was used to analyze the relationship among the caries incidence and the age,sex and to analyze the relationship between the first permanent molars DMFT,DMFS and the primary molars dmft,dmfs.Results Twenty point seven percent(763/3680) of children had first permanent molars caries,significantly higher(P ＜ 0.01) in girls [28.9％ (509/1762)] than in boys [13.2％ (254/1918)],a positive correlation (r =0.31,P ＜ 0.01) was found between caries experiences of primary molars (dmft) and caries of first permanent molars (DMFT).Higher permanent molar caries was found in subjects with dmft higher than 3 or dmfs higher than 19.Conclusions Sex,age and the caries experience of primary molars were factors closely related with the caries rate of the first permanent molars.Enhanced prevention is suggested on the first permanent molars of children who has higher prevalence of caries in primary molars.
