Department of Preventive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
Acta Odontol Scand. 2020 May;78(4):303-308. doi: 10.1080/00016357.2019.1704054. Epub 2019 Dec 19.
To evaluate the association of body mass index (BMI) and gross national income (GNI) per capita with dental caries experience in children at population levels. This ecological study used global data of decay, missing, and filled teeth (DMFT), BMI, and GNI. DMFT data of 12 years old children from 117 countries were obtained from the World Health Organization. BMI data of children and adolescents from the same 117 countries were retrieved from the NCD Risk Factor Collaboration and GNI per capita from the World Bank. ANOVA test, Pearson's correlation coefficient (r), and multivariable linear regression were performed. Globally mean BMI ranged from 16.1 to 22.2 in children. Low-income countries had the lowest BMI (17.41 ± 0.57) and high-income countries had the highest BMI (20.14 ± 0.87) ( < .001). The highest mean DMFT was observed in upper-middle-income countries (2.48 ± 1.16) and the lowest in low-income countries (1.22 ± 0.83) ( = .001). There was no significant correlation between BMI and dental caries (DMFT) ( = .063; = .498). However, there were significant correlations between GNI per capita and BMI ( = 0.366; < .001) and GNI per capita and DMFT (= -0.252; = .007). In multivariable linear regression, GNI per capita was negatively associated with caries experience in children (B= -1.83; < .001). The study found that BMI was associated with income levels of the countries. GNI per capita significantly and negatively correlated with DMFT in children. Further investigation into the association between BMI and dental caries is warranted.
评估人群中儿童的体重指数（BMI）和人均国民总收入（GNI）与龋齿经历的关联。本生态研究使用了全球龋齿、缺失和补牙（DMFT）、BMI 和 GNI 的数据。来自 117 个国家的 12 岁儿童的 DMFT 数据来自世界卫生组织。从 117 个相同国家/地区的 NCD 风险因素合作组织中检索到儿童和青少年的 BMI 数据，从世界银行中检索到人均 GNI。进行了方差分析检验、皮尔逊相关系数（r）和多元线性回归。全球儿童的平均 BMI 范围在 16.1 到 22.2 之间。低收入国家的 BMI 最低（17.41±0.57），高收入国家的 BMI 最高（20.14±0.87）（ < .001）。中高收入国家的平均 DMFT 最高（2.48±1.16），低收入国家的最低（1.22±0.83）（ = .001）。BMI 与龋齿（DMFT）之间没有显著相关性（ = .063； = .498）。然而，人均 GNI 与 BMI 之间存在显著相关性（ = 0.366； < .001），人均 GNI 与 DMFT 之间也存在显著相关性（ = -0.252； = .007）。在多元线性回归中，人均 GNI 与儿童龋齿经历呈负相关（B= -1.83； < .001）。研究发现，BMI 与国家的收入水平有关。人均 GNI 与儿童的 DMFT 呈显著负相关。需要进一步研究 BMI 与龋齿之间的关联。
