Dumbryte Irma, Linkeviciene Laura, Linkevicius Tomas, Malinauskas Mangirdas
Vilnius Research Group, Vilnius, Lithuania.
Institute of Odontology, Faculty of Medicine, Vilnius University, Vilnius, Lithuania.
Am J Orthod Dentofacial Orthop. 2017 Feb;151(2):284-291. doi: 10.1016/j.ajodo.2016.06.036.
Our aim was to assess the possible changes in sensitivity of teeth with and without visible enamel microcracks (EMCs) up to 1 week after the removal of metal brackets.
After debonding, 15 patients possessing teeth with visible EMCs and 15 subjects whose teeth were free of EMCs were enrolled in the study. For each experimental group, a control group was formed. The assessments of tooth sensitivity elicited by compressed air and cold testing were performed 5 times: just before debonding, immediately after debonding, and at 1, 3, and 7 days after debonding. Tooth sensitivity was recorded on a 100-mm visual analog scale.
For the patients without visible EMCs, discomfort peaked immediately after debonding and started to decrease on day 1; at 1 week after debonding, the visual analog scale scores were lower than just before debonding and immediately after debonding. For the subjects possessing teeth with visible EMCs, the pattern of sensitivity dynamic was inherently the same. However, the patients with visible EMCs showed higher visual analog scale values at each time interval.
Debonding leads to a short-term increase in tooth sensitivity. EMCs, a form of enamel damage, do not predispose to greater sensitivity perception in relation to bracket removal.
我们的目的是评估去除金属托槽后长达1周内，有和没有可见釉质微裂纹（EMC）的牙齿敏感性可能发生的变化。
脱粘后，15名有可见EMC的患者和15名牙齿无EMC的受试者被纳入研究。每个实验组都形成了一个对照组。通过压缩空气和冷测试引发的牙齿敏感性评估进行了5次：脱粘前、脱粘后立即以及脱粘后1、3和7天。牙齿敏感性用100毫米视觉模拟量表记录。
对于没有可见EMC的患者，不适感在脱粘后立即达到峰值，并在第1天开始下降；脱粘后1周，视觉模拟量表评分低于脱粘前和脱粘后立即的评分。对于有可见EMC的受试者，敏感性动态模式本质上是相同的。然而，有可见EMC的患者在每个时间间隔的视觉模拟量表值都更高。
脱粘会导致牙齿敏感性短期增加。EMC作为釉质损伤的一种形式，与托槽去除相关的敏感性感知增加无关。
