两种方法矫治不同年龄组安氏Ⅱ2错牙合畸形的临床研究

摘要/Abstract

摘要： 目的研究两种不同矫治方法唇倾、压低青少年及成人安氏Ⅱ类2分类错牙合畸形的上中切牙的临床疗效。方法选择安氏Ⅱ类2分类的患者41例，根据年龄分为青少年组（A）和成人组（B），每组患者随机分为两组，分别用种植钉、摇椅弓唇倾压低上中切牙。治疗前后拍摄CBCT，测量分析治疗前后上中切牙的位置及牙槽骨的改变。结果治疗完成时41例患者均达到正常覆牙合、覆盖，上中切牙均有唇倾,差异具有统计学意义，P <0.05，（A1>A2，P >0.05;B1>B2，P <0.05）；阻抗中心点种植钉组压低,差异有统计学意义,（P<0.05）；牙槽缘点压低，差异有统计学意义，P <0.05，（A1>A2，P <0.01;B1>B2，P <0.05）；唇侧根尖水平牙槽骨厚度增加，腭侧根中、根尖水平牙槽骨厚度减少，差异有统计学意义，P <0.05，治疗前后相关测量项目在青少年与成人之间没有显著差异。结论种植体支抗可以有效地矫治安氏Ⅱ类2分类舌倾的上中切牙，并且可以真性压低上中切牙，青少年与成人之间矫治前后上中切牙变化没有明显差异

关键词: 安氏Ⅱ类2分类, 微种植体, 唇倾, 压低

Abstract: Objective To study the clinical efficacy of maxillary incisors in adolescents and adults with Class Ⅱ division 2 using two different methods. Methods 41 patients with Class Ⅱ division 2 were selected and divided into adolescent group(A) and adult group(B) according to age. Each group was randomly divided into two groups respectively using the miniscrew and reverse-curve archwire to protrude and intrude the maxillary incisors. Cone-beam Computed Tomograph (CBCT) was taken before and after treatment, and changes of the position of the maxillary anterior teeth and the alveolar bone were measured and analyzed. Results All 41 patients achieved normal overbite and overjet. The maxillary incisors have different degrees of inclination and intrusion(P <0.05;A1>A2,P >0.05;B1>B2,P <0.05); as was the intrusion of superior prosthion(P <0.05;A1>A2,P <0.01;B1>B2,P <0.05）. The measurements of the b3 showed an increase in bone thickness(P <0.05). The measurements of the p2 and the p3 showed a decrease in bone thickness(P <0.05). There were no significant differences between different ages. Conclusion The implant anchorage can effectively correct the retroclined maxillary incisors of Class Ⅱ division 2 and achieve the genuine intrusion. There was no significant difference in the change of maxillary incisors between adolescents and adults.

Key words: Class Ⅱ division 2 , Micro-implant , protrusion , intrusion

中图分类号:

R783.5

周明智吴可王林王珊赵春洋. 两种方法矫治不同年龄组安氏Ⅱ2错牙合畸形的临床研究[J]. 口腔医学, 2020, 40(3): 209-214.

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