Abstract
Background: The aim of this cross-sectional study was to investigate the oral health status of Hani 12-year-old children in Yunnan, a province in Southwest China. Method: This study employed a multistage sampling method to recruit children from local primary schools. Two calibrated dentists examined the status of dental caries, gingival bleeding and dental fluorosis by adopting the diagnosis criteria recommended by the World Health Organization. A self-administrated questionnaire was distributed. The chi-square test and multivariate logistic regression were conducted. Results: This study invited 480 Hani children, and recruited 413 children (52% boys) (response rate: 86%). The dental caries prevalence was 52%, and the caries experience associated with the mean (standard deviation) decayed, missing and filled teeth (DMFT) score was 1.10 (1.46). Gingival bleeding was diagnosed in 252 children (61%), and dental fluorosis was found in two children (0.5%). The results of the regression model indicated the prevalence of dental caries were associated with sugary snacking habits (p = 0.002). The prevalence of gingival bleeding was related to the mother’s education level as well as the child’s monthly pocket money (p < 0.05). Conclusion: Dental caries and gingival bleeding were prevalent among 12-year-old Hani children in the Yunnan province in China. Dental fluorosis was uncommon.
Highlights
In the latest epidemiological survey performed in 2015, the results showed that 39% of the 12-year-old Chinese school children had experienced dental caries, 58% had periodontal bleeding and 13% had dental fluorosis [12,13,14]
This study invited a total of 480 12-year-old Hani children from four primary schools in different cities and autonomous prefectures along the border to participate
The intra-examiner and inter-examiner reliability were excellent with the intraclass correlation above 0.90 for the assessment of dental caries, gingival bleeding, dental fluorosis, dental erosion as well as tetracycline-stained teeth
Summary
Aside from Ethnic Han, 55 ethnic minorities are officially recognized in China [3] These ethnic groups are culturally different, featuring unique traditions and spoken languages [4]. The aim of this cross-sectional study was to investigate the oral health status of. Hani 12-year-old children in Yunnan, a province in Southwest China. Gingival bleeding was diagnosed in 252 children (61%), and dental fluorosis was found in two children (0.5%). The results of the regression model indicated the prevalence of dental caries were associated with sugary snacking habits (p = 0.002). Conclusion: Dental caries and gingival bleeding were prevalent among 12-year-old Hani children in the Yunnan province in China.
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