J Korean Acad Oral Health.  2012 Sep;36(3):185-194.

Risk factors for dental caries incidence in children's permanent teeth: four-year follow-up study

Affiliations
  • 1Department of Preventive & Community Dentistry, School of Dentistry, Pusan National University, Yangsan, Korea. jbomkim@pusan.ac.kr
  • 2Department of Preventive & Public Health Dentistry, School of Dentistry, Seoul National University, Seoul, Korea.

Abstract

OBJECTIVES: The aim of this study was to analyze the related factors to dental caries incidence and increments of DMFT index in children's permanent teeth.
METHODS
The subjects were 249 elementary school children at the baseline survey. At the four-year follow-up survey, number of subjects reduced to 141. In the first year, all subjects submitted the responses of questionnaire composed of demographic variables and oral health behaviors. They also received oral examination and tests of salivary excretion rate, salivary buffer capacity, Dentocult(R) SM and Dentocult(R) LB. In the first to fourth follow-up year, they received oral examinations. The relation of oral health-related factors with caries incidence and increments of DMFT and DMFS index was analyzed by chi-square test, ANOVA, logistic regression analysis and generalized linear model analysis using Poisson distribution.
RESULTS
At four-year follow-up survey, subjects whose Dentocult(R) SM was 2 or higher compared to subjects whose Dentocult(R) SM was 1 or less and subjects whose Dentocult(R) LB was 2 or higher compared to subjects whose Dentocult(R) LB was 1 or less had higher DMFT index increments. In DMFT index increments, the adjusted odds ratio of subjects whose dfs index of primary molars was 11 and more was 4.30 compared to subjects whose dfs index of primary molars was 0 adjusted for gender, daily frequency of toothbrushing and eating between meal, mother's job, oral health education, salivary excretion, salivary buffer capacity and Dentocult(R) SM test.
CONCLUSIONS
It was suggested that the caries incidence and increments of DMFT index in permanent teeth should be highly associated with salivary lactobacillus count and dfs index of primary molars.

Keyword

Caries risk factors; Dental caries incidence; Dental caries increments in permanent teeth; Dental caries in primary molars; Dental caries prediction; Salivary lactobacillus count
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