隐形矫治前后安氏Ⅱ类1分类错(牙合)上前牙区牙槽骨高度改变的CBCT研究
|
摘要
目的探讨隐形矫治前后安氏Ⅱ类1分类错(牙合)上前牙区牙槽骨高度改变的特征及相关影响因素。方法选取符合纳入标准的安氏Ⅱ类1分类错(牙合)61例,其中隐形矫治32例(男14例,女18例,年龄13.59±1.64岁);固定矫治组29例(男16例,女13例,年龄13.31±1.63)岁。收集患者正畸前后拍摄的CBCT,测量上颌前牙唇腭侧牙槽嵴顶距釉牙骨质界(Cementoenamel Junction,CEJ)距离,计算牙槽骨高度改变量,利用SPSS 20.0进行统计分析。结果安氏Ⅱ类1分类错(牙合)隐形矫治组与固定矫治组正畸治疗后上前牙区牙槽骨高度降低牙面数分别达58.74%与72.40%,平均降低量分别为(0.78±3.52)mm与(1.02±2.01)mm。上颌前牙唇侧、上颌切牙腭侧,固定矫治组牙槽骨高度降低量均显著高于隐形矫治组,差异有统计学意义(P<0.05)。结论安氏Ⅱ类1分类错(牙合)正畸治疗后上前牙区牙槽骨高度普遍降低,降低量及位点与矫治器的选择密切相关。提示正畸医生应对安氏Ⅱ类1分类错(牙合)患者合理选择应用隐形矫治以获得更好的牙周状况。
引文
[1]赵岩,屈振宇,刘琳,等.口锥形束CT用于骨性安氏Ⅱ类1分类错畸形切牙区唇侧牙槽骨开窗及骨开裂的研究[J].中华口腔正畸学杂志,2016,23(1):2-7.
[2]Garlock DT,Buschang PH,Araujo EA,et al.Evaluation of marginal alveolar bone in the anterior mandible with pretreatment and posttreatment computed tomography in nonextraction patients[J].Am J Orthod Dentofacial Orthop.2016 Feb;149(2):192-201.
[3]Lund H,Grodahl K,Grodahl HG.Cone beam computed tomography evaluations of marginal alveolar bone before and after orthodontic treatment combined with premolar extractions.Eur J Oral Sci.2012 Jun;120(3):201-11.
[2]Garlock DT,Buschang PH,Araujo EA,et al.Evaluation of marginal alveolar bone in the anterior mandible with pretreatment and posttreatment computed tomography in nonextraction patients[J].Am J Orthod Dentofacial Orthop.2016 Feb;149(2):192-201.
[3]Lund H,Grodahl K,Grodahl HG.Cone beam computed tomography evaluations of marginal alveolar bone before and after orthodontic treatment combined with premolar extractions.Eur J Oral Sci.2012 Jun;120(3):201-11.