Effect of oral health behavior and demographic variables on gingival health in 11-16-year-old school children in Chandigarh, India: A cross-sectional study.

AIMS: The aims of the present study were to assess the prevalence and pattern of gingival bleeding on probing (BOP) and to evaluate the effect of oral health behavior and demographic determinants on gingival health in 11-16-year-old school children in Chandigarh, India. METHODS: A cross-sectional study, using stratified random sampling, was conducted across two age groups, 11-13 years and 14-16 years, and two socioeconomic strata: upper and lower. The World Health Organization (WHO) Oral Health Questionnaire for Children was used to record the data, and the WHO Community Periodontal Index (modified) was used to assess gingival BOP. RESULTS: Among all the 2294 children examined, an estimated 54.2% had gingival BOP. The odds of BOP were also higher in the younger age group (odds ratio [OR]: 1.261, 95% confidence interval [CI]: 1.068-1.487, P = 0.006), higher for boys (OR: 1.200, 95% CI: 1.017-1.416, P = 0.031), and lower in the upper strata (OR: 0.805, 95% CI: 0.682-0.951, P = 0.011). Gingival BOP was 58.5% in the mandibular and 41.5% in the maxillary arch (P < 0.0001); χ2 -test found tooth cleaning frequency to be a significant contributing factor for gingival BOP (P = 0.014). CONCLUSIONS: An inverse co-relation of gingival BOP with age, socioeconomic status, and a higher prevalence in boys was observed, necessitating periodic preventive dental education, particularly focusing on the target group. Additionally, early screening and prompt treatment to intercept the disease is advocated.

Dental fluorosis in the Blue Mountains and Hawkesbury, New South Wales, Australia: policy implications.

AIM: The aim of the present study was to determine whether the adjustment of the fluoride concentration to 1 ppm in the drinking water supplied to the Blue Mountains, New South Wales, Australia in 1993 was associated with fluorosis incidence. METHODS: In 2003, children attending schools in the Blue Mountains and a control region (fluoridated in 1967) that had been randomly selected at baseline in 1992 were examined for dental fluorosis (maxillary central incisors only) using Dean's index. A fluoride history for each child was obtained by questionnaire. Associations between fluorosis and 58 potential explanatory variables were explored. RESULTS: The response rate was 63%. A total of 1138 children aged from 7 to 11 years with erupted permanent central incisors were examined for dental fluorosis. Fluorosis prevalence was the same in both regions. The Community Index of Dental Fluorosis values were slightly different, but were both above 0.6, indicative of public health concern. CONCLUSIONS: For the group as a whole, we concluded that: (a) fluorosis prevalence (0.39) in both regions was similar; and (b) the higher-than-expected prevalence and severity of fluorosis was due mainly to two factors: (a) the higher-than-optimal fluoride level in drinking water; and (b) swallowing of fluoride toothpaste in early childhood.