Abstract:

Objective　To analyze and evaluate the clinical effect of customized bracket-less appliance for class I malocclusion by 3Shape 3D digital simulation technology. Methods　Seventy-two patients with Angle Class Ⅰ malocclusion were enrolled，of whom 35 were crowding and 37 were scattered interstitial. Customized bracket-less appliance was used in orthodontic treatment，3Shape three-dimensional digital simulation was used for analysis and evaluation of the treatment effect. Results　Seventy-two patients achieved satisfactory clinical results. For crowding patients，the patient's anterior ratio，maxillary length，mandibular length，left incisor coverage，and right incisor coverage were significantly improved after treatment. For scattered patients，the total tooth ratio，anterior ratio，maxillary length，mandibular length，left incisor coverage，right incisor coverage，maxillary canine width，and mandibular canine width were significantly improved after treatment. Conclusion　Customized brackets-less appliance can effectively correct the malocclusion in Angle Class Ⅰcrowding patients and interstitial patients.

Key words: three-dimensional simulation technology, customized brackets-less appliance, Angle ClassⅠmalocclusion

摘要：

目的　对定制式无托槽矫治器矫治安氏I类错牙合的临床效果进行3Shape三维分析和评价。方法  　选取2014—2016年于首都医科大学附属北京安贞医院口腔科就诊的安氏Ⅰ类错牙合患者72例，其中拥挤型35例，散在间隙型37例。应用定制式无托槽矫治器正畸，通过3Shape三维数字化模拟技术对两种类型患者的治疗效果进行分析和评价。结果　72例安氏Ⅰ类错牙合患者均取得了良好的治疗效果。对于拥挤型患者，通过治疗能显著改善患者的前牙比、上颌长度、下颌长度、左切牙覆盖、右切牙覆盖。对于散在间隙型患者，通过治疗能显著改善患者的全牙比、前牙比、上颌长度、下颌长度、左切牙覆盖、右切牙覆盖、上颌尖牙宽度和下颌尖牙宽度。结论　定制式无托槽矫治器可有效矫治安氏Ⅰ类拥挤型患者和散在间隙型患者的错牙合畸形。

关键词: 三维模拟技术, 定制式无托槽矫治器, 安氏Ⅰ类错牙合