Caries status of primary and permanent teeth among 6-year-old children in Sichuan province and their correlation / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate caries status of primary and permanent teeth among 6-year-old children in Sichuan Province and correlation between caries of deciduous molars and first permanent molars.</p><p><b>METHODS</b>Referenced to the sampling programme of the third national epidemiological survey of oral health status, a total of 714 children aged 6 were randomly sampled in clusters including 3 urban sampling spots and 3 rural sampling spots, the correlation between caries of deciduous molars and first permanent molars was explored.</p><p><b>RESULTS</b>The prevalence rate of deciduous tooth caries of 6-year-old children in Sichuan province was 74.37%, the mean number of dmft of 6-year-old was 3.94 +/- 3.93, the filling rate was only 4.96%. The prevalence rate and mean dmft of deciduous tooth caries showed no significant difference between different area and gender (P>0.05), however, the children came from city showed significant higher filling rate than those from countryside (P<0.05). The first permanent molars erupted have 2.98% in caries, the filling rate was 7.69%. Caries of deciduous molars was the first permanent molars caries risk factors among 6-year-old children in Sichuan province [P=0.001, r=0.175, OR=5.756, 95%CI (1.733, 19.121)]. There was weak correlation between caries of deciduous molars and first permanent molars (P<0.001, r=0.194).</p><p><b>CONCLUSION</b>Caries status of primary among 6-year-old children in Sichuan Province are serious. Caries experience of deciduous molars may play an important role in predicting the first permanent molars caries in clinic and prevention.</p>