Federal University of Santa Catarina, Florianópolis, Brazil.
University College London, London, UK.
Int Dent J. 2018 Feb;68(1):47-53. doi: 10.1111/idj.12327. Epub 2017 Sep 7.
The present study aimed to estimate the prevalence and severity of dental caries in schoolchildren from Florianópolis, southern Brazil, in 2016, as well as to compare these findings with data obtained from six previous studies carried out in the same school since 1971.
A cross-sectional study was conducted with 133 schoolchildren, 12 and 13 years of age. Clinical data were collected by three previously calibrated examiners, according to the 2013 World Health Organization diagnostic criteria, in order to estimate the mean count of decayed, missing and filled teeth/surfaces (DMFT/DMFS indexes) and the Significant Caries Index (SiC).
The study response rate was 87.2% (n = 116), and the prevalence of dental caries decreased from 98.0% (95% CI: 96.0-100.0) in 1971 to 39.6% (95% CI 30.7-49.2) in 2016. The mean DMFT index fell from 9.2 in 1971 to 0.9 in 2016, while the DMFS index ranged from 2.0 (95% CI: 1.2-2.8) in 2009 to 1.5 (95% CI: 1.0-1.9) in 2016. The SiC index, which was 3.4 (95% CI: 3.0-3.8) in 2002, reached 2.5 (95% CI: 2.0-2.9) in 2016.
Over the 45 years of monitoring, a significant decline in rates of dental caries has been observed. However, the SiC index suggests that dental caries lesions are unequally distributed in the study sample, with one-third of the schoolchildren showing a significantly higher mean DMFT score compared with the entire sample.
本研究旨在评估 2016 年巴西南部弗洛里亚诺波利斯市学童的龋齿患病率和严重程度，并将这些发现与自 1971 年以来在同一所学校进行的六次先前研究的数据进行比较。
采用横断面研究，对 133 名 12 至 13 岁的学生进行研究。临床数据由三位经过先前校准的检查者收集，根据 2013 年世界卫生组织诊断标准，以估计患龋牙数、失牙数和补牙数/面数的平均值（DMFT/DMFS 指数）和严重龋齿指数（SiC）。
研究的应答率为 87.2%（n=116），龋齿患病率从 1971 年的 98.0%（95%可信区间：96.0-100.0）下降到 2016 年的 39.6%（95%可信区间 30.7-49.2）。DMFT 指数从 1971 年的 9.2 降至 2016 年的 0.9，而 DMFS 指数从 2009 年的 2.0（95%可信区间：1.2-2.8）降至 2016 年的 1.5（95%可信区间：1.0-1.9）。SiC 指数在 2002 年为 3.4（95%可信区间：3.0-3.8），在 2016 年达到 2.5（95%可信区间：2.0-2.9）。
在 45 年的监测过程中，龋齿发病率显著下降。然而，SiC 指数表明，龋齿病变在研究样本中分布不均，三分之一的学生的平均 DMFT 得分明显高于整个样本。
