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Updated: Apr 20, 2026

Oral Biofilm Sampling for Microbiome Analysis in Healthy Children
Published on: December 31, 2017
Periodontal status and associated factors in 15-year-old Sri Lankans
Gangani Amarasena1, Lilani Ekanayake2
1Postgraduate Institute of Medicine, Colombo, Sri Lanka.
Aim:
The aim of the present study was to determine the periodontal status and associated factors in 15-year-old Sri Lankans.
Methods:
This was a cross-sectional study where the data were collected by means of a self-administered questionnaire and a clinical examination. A total of 400 15 year olds were selected using a two-stage cluster sampling technique from schools in the Nattandiya education division of the Puttalam district of Sri Lanka.
Results:
The prevalence of gingival inflammation was 86%, and nearly 7% of the adolescents had chronic periodontitis. The mean gingival index, debris index, calculus index, and oral hygiene index scores of the sample were 0.47±0.3, 0.31±0.2, 0.46±0.3, and 0.78±0.5, respectively. A multiple logistic regression analysis revealed that the debris level, calculus level, frequency of toothbrushing, and the level of education of the mother were significantly associated with gingival status.
Conclusion:
The prevalence of gingival inflammation was high, and both the debris and calculus levels were strongly associated with gingival status in these adolescents.
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