Department of Dentistry, Faculty of Health Sciences, University of Brasília, Brasília, Brazil,
Department of Dentistry, Faculty of Health Sciences, University of Brasília, Brasília, Brazil.
Caries Res. 2019;53(4):424-430. doi: 10.1159/000495848. Epub 2019 Jan 24.
AIM: This study aimed to investigate the prevalence of hypersensitivity in molar-incisor hypomineralization (MIH)-affected molars through a census carried out in 8-year-old schoolchildren. METHODS: Examinations were conducted by a calibrated examiner, using the Nyvad criteria for caries diagnosis and a new criterion for MIH assessment. For hypersensitivity assessment, all MIH-affected molars were included. Nonaffected molars from the same child were used as controls. Air blast reaction was measured using the Visual Analogue Scale (VAS) and the Schiff Cold Air Sensitivity Scale (SCASS) scale, while tactile hypersensitivity was scored using VAS only. Statistical analysis was performed using the Kruskal-Wallis test followed by Dunn's multiple comparisons test for quantitative data. χ2 was used for the comparison of categorical data. RESULTS: In total, 631 children were assessed, of whom 102 had MIH-affected molars (16.1%). Of these, 51.7 and 8.7% presented enamel and dentin carious lesions, respectively. Regarding the number of teeth, 239 molars were MIH affected (59.8%), with 188 (78.7%) being classified as mild (opacities only), 20 (8.4%) as moderate (posteruptive enamel breakdown), and 31 (13%) as severe (posteruptive breakdown involving dentin/atypical restorations). Hypersensitivity was recorded in only one control molar, while the prevalence of hypersensitivity in MIH-affected molars was 34.7%, being of low intensity and more prevalent in moderate (55%) and severe cases (51.6 %) than in mild cases (29.8%, p = 0.008). An association between hypersensitivity and the presence of mild and moderate cases was observed. Although the same association was observed for severe cases, it was not considered a reliable information as 90% of the MIH-affected molars with posteruptive breakdown involving dentin were affected by carious lesions. It is known that dental caries is a confounding factor for the presence of hypersensitivity. CONCLUSIONS: Hypersensitivity was significantly higher in MIH-affected molars than in nonaffected molars, being associated with MIH teeth presenting opacities and posteruptive enamel breakdown.
目的：本研究旨在通过对 8 岁学龄儿童进行普查，调查患有磨牙-切牙牙釉质发育不全（MIH）的牙齿中过敏症的流行情况。
方法：由经过校准的检查者进行检查，使用 Nyvad 龋齿诊断标准和 MIH 评估新标准。为了评估过敏症，所有患有 MIH 的牙齿均包括在内。同一儿童的未受影响的牙齿用作对照。使用视觉模拟量表（VAS）和 Schiff 冷空气敏感性量表（SCASS）量表测量空气爆破反应，而仅使用 VAS 对触觉过敏症进行评分。使用 Kruskal-Wallis 检验进行定量数据分析，随后使用 Dunn 多重比较检验进行检验。使用 χ2 进行分类数据的比较。
结果：共有 631 名儿童接受了评估，其中 102 名儿童患有 MIH 牙齿（16.1%）。其中，分别有 51.7%和 8.7%的牙齿患有釉质和牙本质龋损。就牙齿数量而言，239 颗牙齿受到 MIH 的影响（59.8%），其中 188 颗（78.7%）被归类为轻度（仅存在不透明），20 颗（8.4%）为中度（萌出后釉质破裂），31 颗（13%）为重度（萌出后累及牙本质/非典型修复的破裂）。仅在一颗对照牙中记录到过敏症，而 MIH 受影响的牙齿中过敏症的患病率为 34.7%，强度较低，在中度（55%）和重度（51.6%）病例中比轻度病例（29.8%）更常见（p = 0.008）。观察到过敏症与轻度和中度病例的存在之间存在关联。尽管在涉及牙本质萌出后破裂的严重病例中也观察到了相同的关联，但由于 90%的萌出后涉及牙本质的 MIH 受影响的牙齿均受到龋齿的影响，因此这并不是可靠的信息。已知龋齿是过敏症存在的混杂因素。
结论：患有 MIH 的牙齿中过敏症的发生率明显高于未受影响的牙齿，与存在不透明和萌出后釉质破裂的 MIH 牙齿有关。
Zotero 插件