Department of Pediatric Dentistry and Orthodontics, Universidade Federal de Minas gerais, UFMG, Belo Horizonte, Minas Gerais, Brazil.
Department of Dentistry, Universidade Estadual da Paraíba, Campina Grande, Brazil.
Int J Paediatr Dent. 2019 May;29(3):325-331. doi: 10.1111/ipd.12471. Epub 2019 Feb 13.
The pathway by which socioeconomic disadvantages are manifested in the occurrence of dental caries remains unclear.
To explore how much the association between untreated dental caries and income inequalities is related to household food insecurity (HFI).
A population-based study was conducted with a sample of 466 12-year-old students. Dental caries was evaluated by an examiner who had undergone calibration exercises. HFI was assessed using the Food Insecurity Scale validated for Brazilian Portuguese. Poisson regression models were created to determine associations between dental caries and both household income and HFI. The proportion of the income effect on dental caries explained by HFI was determined by the variation in percentages between the crude prevalence ratio (PR ) for dental caries and this measure adjusted by HFI (PR ).
The prevalence of dental caries was higher among children from families with a per capita household income lower than US$ 71 (PR: 1.69; 95%CI: 1.15-2.49) or from US$ 71 to US$ 142 (PR: 1.50; 95%CI: 1.04-2.17). Moreover, 14% of the association between a low income and dental caries was explained by HFI.
Differences in the prevalence of dental caries in schoolchildren related to socioeconomic inequalities could partially be attributed to HFI in low-income families.
社会经济劣势在龋齿发生中的作用途径仍不清楚。
探讨未治疗的龋齿与收入不平等之间的关联与家庭食物不安全（HFI）的关系程度。
本研究为基于人群的研究，样本为 466 名 12 岁学生。由经过校准训练的检查者评估龋齿情况。使用经过巴西葡萄牙语验证的食物不安全量表评估 HFI。采用泊松回归模型确定龋齿与家庭收入和 HFI 之间的关联。通过 HFI 调整后的粗患病率比（PR）与 HFI 调整后的患病率比（PR）之间的百分比差异，确定 HFI 对龋齿的收入效应的解释比例。
家庭人均收入低于 71 美元（PR：1.69；95%CI：1.15-2.49）或 71-142 美元（PR：1.50；95%CI：1.04-2.17）的儿童龋齿患病率更高。此外，低收入与龋齿之间的 14%关联可归因于 HFI。
与社会经济不平等相关的学龄儿童龋齿患病率差异部分可归因于低收入家庭的 HFI。
