Deng Qianyi, Wong Hai Ming, Peng Simin
Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China.
Int J Dent Hyg. 2025 May;23(2):401-408. doi: 10.1111/idh.12845. Epub 2024 Oct 14.
The objective of this study was to investigate the correlations between salivary physicochemical parameters, adiposity, and caries indices in Hong Kong adolescents.
A total of 921 adolescents aged 12-15 years from four randomly selected local secondary schools were invited to participate in this cross-sectional study. Dental examinations including the number of decayed, missing, and filled teeth (DMFT), salivary physicochemical parameters, and anthropometric measurements were performed. The Mann-Whitney U test was used to examine the differences in salivary parameters and adiposity indices between participants with different levels of caries experience. Correlations between adiposity indices, salivary parameters, and caries indices were examined using Spearman's correlation coefficients.
The participation rate was 83.6%. After exclusion, data from 695 adolescents were analysed. Adolescents with high caries experience (DMFT ≥ Significant Caries Index [SiC Index]) had significantly higher weight-to-height ratio (W/H) and waist circumference (WC) z-scores and lower unstimulated and stimulated salivary flow rates and buffering capacity than those with DMFT < SiC Index. Except for body mass index z-score, the other adiposity indices were negatively correlated with at least one salivary physicochemical parameter (stimulated salivary flow rate or salivary buffering capacity) (r ranged from -0.078 to -0.132). After adjusting for age and sex, decreased stimulated salivary flow rate was associated with higher body fat percentages, WC, and waist-to-height ratio z-scores, whereas low salivary buffering capacity was associated with higher W/H and WC z-scores.
There is a potential link between adiposity indices and certain salivary physicochemical parameters that are implicated in the aetiology of dental caries.
本研究旨在调查香港青少年唾液理化参数、肥胖程度与龋齿指数之间的相关性。
从四所随机选取的本地中学邀请了921名12至15岁的青少年参与这项横断面研究。进行了包括龋失补牙数（DMFT）、唾液理化参数和人体测量在内的牙科检查。采用曼-惠特尼U检验来检查不同龋齿经历水平参与者之间唾液参数和肥胖指数的差异。使用斯皮尔曼相关系数来检查肥胖指数、唾液参数和龋齿指数之间的相关性。
参与率为83.6%。排除后，对695名青少年的数据进行了分析。龋齿经历高（DMFT≥显著龋齿指数[SiC指数]）的青少年比DMFT＜SiC指数的青少年具有显著更高的体重身高比（W/H）和腰围（WC）z评分，以及更低的非刺激性和刺激性唾液流速和缓冲能力。除体重指数z评分外，其他肥胖指数与至少一项唾液理化参数（刺激性唾液流速或唾液缓冲能力）呈负相关（r范围为-0.078至-0.132）。在调整年龄和性别后，刺激性唾液流速降低与更高的体脂百分比、WC和腰高比z评分相关，而低唾液缓冲能力与更高的W/H和WC z评分相关。
肥胖指数与某些与龋齿病因相关的唾液理化参数之间存在潜在联系。
