Paediatric Dentistry & Orthodontics, Faculty of Dentistry, The University of Hong Kong, 2/F Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong SAR, China.
Food and Nutritional Science, School of Biological Sciences, The University of Hong Kong, Hong Kong SAR, China.
BMC Oral Health. 2018 Nov 20;18(1):188. doi: 10.1186/s12903-018-0657-5.
Socio-economic status, health awareness, and dietary habits have been reported as common risk factors of dental caries and obesity. The present study aimed to explore shared mediators between caries and obesity and to estimate the effects of caries-related factors on adiposity.
This was a cross-sectional study among adolescents aged 18 years. The study was nested in a population-representative cohort of Chinese in Hong Kong. The number of decayed, missing, and filled permanent teeth (DMFT) was recorded during the oral examinations. Body Mass Index (BMI), Waist Circumference (WC), Waist-Hip-Ratio (WHR), Waist-Height-Ratio (WHtR), and Triceps Skinfold Thickness (TRSKF) were used as adiposity indices. Data on socio-economic status, oral health behavior (tooth brushing habit, use of fluoride toothpaste, dental flossing habit, and mouth rinse habit), and dietary record (frequency and amount of different food) were collected through self-completed questionnaires. Chi-square tests and binary logistic regressions were used for analysis.
Three hundred eighty-three participants were included. The mean (standard deviation, SD) of BMI, WC, WHR, WHtR, TRSKF, and DMFT were 21.26 (3.72), 69.11 (9.25), 0.77 (0.06), 0.42 (0.05), 15.72 (6.33), and 2.06 (2.43), respectively. Males were more likely to be overweight/obese than females. Various factors including gender, parental employment status, mouth rinse habit, frequency and amount of meat intake, frequency of oil intake, use of fluoride toothpaste, and DMFT were found significant (p < 0.05) in different final models of adiposity status.
More mediators should be included in future research to elucidate mechanism of the association between caries and obesity.
社会经济地位、健康意识和饮食习惯已被报道为龋齿和肥胖的共同危险因素。本研究旨在探讨龋齿和肥胖之间的共同中介因素，并估计与龋齿相关的因素对肥胖的影响。
这是一项在 18 岁青少年中进行的横断面研究。该研究嵌套在香港一个具有代表性的人群队列中。在口腔检查期间记录了龋齿、缺失和填充的恒牙数（DMFT）。身体质量指数（BMI）、腰围（WC）、腰臀比（WHR）、腰高比（WHtR）和三头肌皮褶厚度（TRSKF）被用作肥胖指数。通过自填问卷收集社会经济地位、口腔健康行为（刷牙习惯、使用含氟牙膏、牙线使用习惯和漱口习惯）和饮食记录（不同食物的频率和数量）的数据。采用卡方检验和二项逻辑回归进行分析。
共纳入 383 名参与者。BMI、WC、WHR、WHtR、TRSKF 和 DMFT 的平均值（标准差，SD）分别为 21.26（3.72）、69.11（9.25）、0.77（0.06）、0.42（0.05）、15.72（6.33）和 2.06（2.43）。男性超重/肥胖的可能性高于女性。性别、父母的就业状况、漱口习惯、肉类摄入量的频率和数量、油摄入量的频率、使用含氟牙膏和 DMFT 等各种因素在不同的肥胖状态最终模型中均有显著差异（p<0.05）。
未来的研究应纳入更多的中介因素，以阐明龋齿和肥胖之间关联的机制。
