Department of Pediatric Dentistry, Orthodontics and Public Health, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil.
Morphology and Children's Clinic Department, Araraquara Dental School, São Paulo State University - UNESP, Araraquara, Brazil.
Int J Paediatr Dent. 2024 Jul;34(4):313-320. doi: 10.1111/ipd.13127. Epub 2023 Oct 19.
There is no consensus on which molar incisor hypomineralization (MIH) indices are more suitable for epidemiological surveys.
To compare the operational aspects and diagnostic ability of the MIH index (simplified/MIH_s and extended/MIH_e) with the MIH-Severity Scoring System (MIH-SSS) in classifying and diagnosing MIH.
This cross-sectional study assessed the indices in a homogeneous group of 680 6- to 10-year-old schoolchildren in Bauru, Brazil, who had at least one first permanent molar, ensuring consistent conditions. Followed by toothbrushing, the children seated on school chairs were examined by the two calibrated researchers under artificial lighting, using mouth mirror and WHO probe, and chronometer recording the duration of examinations.
The prevalence of MIH was 24.7%. The most common characteristic of MIH was demarcated opacity, with a prevalence of 81.7% and 85.45% according to the MIH_s and the MIH-SSS, respectively. A positive association was observed among the MIH_s, the MIH_e, and the MIH-SSS (chi-squared test; p < .01). The MIH-SSS demonstrated a shorter average application time than both versions of the MIH index (ANOVA/Tukey; p < .05). Additionally, fluorosis was found to be the most prevalent among other developmental defects of enamel, with a prevalence of 38.38%.
All systems effectively diagnosed MIH and its characteristics.
目前对于哪种恒牙釉质发育不全（MIH）指数更适合流行病学调查尚无共识。
比较简化 MIH 指数（MIH_s）和扩展 MIH 指数（MIH_e）与 MIH 严重程度评分系统（MIH-SSS）在分类和诊断 MIH 方面的操作方面和诊断能力。
本横断面研究在巴西包鲁的一个同质组中评估了这些指数，该组有 680 名 6 至 10 岁的学龄儿童，他们至少有一颗第一恒磨牙，以确保条件一致。在刷牙后，孩子们坐在学校椅子上，由两位经过校准的研究人员在人工照明下，使用口镜和 WHO 探针进行检查，并使用计时器记录检查时间。
MIH 的患病率为 24.7%。MIH 的最常见特征是边界不透明，根据 MIH_s 和 MIH-SSS，其患病率分别为 81.7%和 85.45%。MIH_s、MIH_e 和 MIH-SSS 之间存在正相关关系（卡方检验；p<.01）。MIH-SSS 的平均应用时间比 MIH 指数的两个版本都短（方差分析/Tukey；p<.05）。此外，氟斑牙是釉质发育不全以外的最常见的发育缺陷，患病率为 38.38%。
所有系统都能有效地诊断 MIH 及其特征。
