Tobacco consumption among 12- to 15-year-old schoolchildren in Delhi.

OBJECTIVE: This study aims to assess the knowledge, attitude, and practice of tobacco use and its cessation among children in schools of Delhi. METHODS: A cross-sectional study involving 1094 schoolchildren (577 boys and 517 girls), 12-15 years old, was conducted using the modified Global Youth Tobacco Survey questionnaire. Mann-Whitney U-test and Kruskal-Wallis test were applied (p<0.05). RESULTS: Among these, 132 boys (22.87%) and 120 girls (23.21%) were smokers. "Ever smokers" were 13.80% and "current smokers" were 9.23%, whereas 76.97% were "never smokers". CONCLUSION: Interventions that raise awareness at a young age, equip students to overcome peer influence, and provide counseling to quit using tobacco need to be designed.

Estimation of dental age and its comparison with chronological age: accuracy of two radiographic methods.

INTRODUCTION: Accurate age data are always necessary in medicine and dentistry, and are also important to assess maturity and estimate age in a number of disciplines, such as forensic odontology, paediatric and preventive dentistry, orthodontics, etc. AIM: This investigation determines the accuracy of dental age estimation and its comparison with chronological age by two methods: Demirjian's and Willems'. MATERIALS AND METHODS: Tooth development was assessed in seven left mandibular teeth from 215 orthopantomograms (OPGs) belonging to healthy children aged 6-15 years selected by convenience sampling, from patients of the Sudha Rustagi College of Dental Sciences & Research, Faridabad, and were staged according to Demirjian's and Willems' scales. The statistical analysis was performed using the unpaired 't'-test and the correlation was analysed using Karl Pearson's correlation coefficients test. RESULTS: Overall, Willems' method was found to be more accurate with a mean age overestimation of 0.36 years (SD = 0.38) in boys and 0.24 years (SD = 0.36) in girls, and Demirjian's method produced a mean overestimation of 0.66 years (SD = 0.41) in boys and 0.56 years (SD = 0.43) in girls, respectively. Also, correlation between the two methods revealed a high coefficient value, 0.9947 for boys and 0.9944 for girls (P < 0.05). CONCLUSION: Despite the favourable result of Willems' method in comparison with Demirjian's method, this study demonstrated a high correlation coefficient between both chronological and obtained dental age, thus confirming their potential applicability in clinical practice and forensic dentistry.