Onauma Angwarawong2011-02-222011-02-222010-11-032010-11-03Khon Kaen University Dental Journal; Vo.13 No. 1 Jan - June 2010http://imsear.searo.who.int/handle/123456789/131638This research enrolled in this cross-sectional study to determine the relationship between body mass index (BMI) and gingivitis in adolescent at demonstration school of Khon Kean university from 180 subjects aged between 12-19 years old (mean 14.8 years). The subjects answered to questionnaire about general information. Oral examination recorded gingival bleeding index (GBI%), plaque index (PHP) and calculus index (CI) including assessment of nutritional status by determined body weight (kg) and height (cm) for calculated BMI (kg/m2). Multiple linear regression model was used to assess this association. This study found no statistically significant association of body mass index and gingivitis (p = 0.289) whereas the statistically significant association between gingivitis and calculus index and age was found in this study (p \< 0.001, p = 0.001, respectively).  In addition, the association between plaque index, gender, socioeconomic status of parent, frequency of brushing, cleansing aids, visiting dentist, eating, exercising and gingivitis showed no statistical significance (p  \>  0.05).en-USFaculty of Dentistry, Khon Kaen University, Khon Kaen, ThailandRelationship between body mass index and gingivitis in secondary school children at demonstration school of Khon Kaen universityOriginal Article