Mizrahi E
Am J Orthod. 1983 Oct;84(4):323-31. doi: 10.1016/s0002-9416(83)90348-2.
A cross-sectional study was carried out to determine the prevalence and severity of enamel opacities occurring on different surfaces of the dentition as well as the distribution of these lesions on individual teeth following orthodontic treatment. The sample consisted of 527 patients examined prior to and 269 other patients examined after completion of multibanded orthodontic treatment. The results showed that following orthodontic treatment there was a significant increase in the prevalence of enamel opacities on the vestibular and lingual surfaces of the dentition. The increase was significantly greater on the cervical and middle thirds of the crown. Among individual teeth, there was a statistically significant increase in the prevalence and severity of enamel opacities on the maxillary and mandibular first molars, the maxillary lateral incisors, and the mandibular lateral incisors and canines. The increase was greatest on the cervical and middle thirds of the vestibular surface of these teeth.
开展了一项横断面研究，以确定牙列不同表面出现的釉质混浊的患病率和严重程度，以及正畸治疗后这些病变在各个牙齿上的分布情况。样本包括527名在多带环正畸治疗前接受检查的患者和269名在正畸治疗完成后接受检查的患者。结果显示，正畸治疗后，牙列前庭和舌面釉质混浊的患病率显著增加。在牙冠的颈部和中部三分之一处，这种增加更为显著。在各个牙齿中，上颌和下颌第一磨牙、上颌侧切牙、下颌侧切牙和尖牙的釉质混浊患病率和严重程度在统计学上有显著增加。在这些牙齿前庭表面的颈部和中部三分之一处，这种增加最为明显。
