摘要
目的探讨影响拔除下颌第一磨牙患者正畸治疗疗效的相关因素。方法采用PAR指数对28例拔除下颌第一磨牙错畸形患者的治疗前后模型进行评估分析。结果①治疗后PAR总分值较治疗前减少26.11±8.09,总分值减少百分率为(92.49±4.00)%,权重PAR总分值减少29.61±2.33,权重减少百分率为(96.43±5.20)%。②变差或无改变0例,改善6例(21.43%),明显改善22例(78.57%)。③后牙关系PAR分值减少4.29±3.10,减少百分率为79.64%。结论选用直丝弓矫治系统,尽早使用不锈钢方丝,合理施力和必要矫治技巧是对磨牙进行有效三维控制,取得良好矫治效果的关键。
Objective To investigate the correlative factors influencing orthodontic treatment outcome of mandibular first molars extraction. Methods Pre- and post-treatment study models of 28 cases with the mandibular first molars extraction were assessed by the PAR （ Peer Assessment Rating） index. Results①The mean reduction of PAR total score was 26.11±8.09 with the mean percentage reduction of （92.49±4.00）%.The mean reduction of the weighted PAR score was 29.61±2.33, with the mean percentage reduction of （96.43±5.20）%.②22 cases （78.57%） with maloc-clusion were classified as ＇greatly improved, 6 cases （21.43%） were classified as improved, and none were Worse or no d＇ifferent＇.③The mean reduction of buccal occlusion score was 4.29±3.10, with the mean percentage reduction of 79.64%. Conclusion The keys to better orthodontic results were three dimensional control of molars to be obtained through the use of straight wire appliance, with the earliest possible use of stainless steel rectangular arch wires, optimum orthodontic force and certain orthodontic technique.
出处
《广东牙病防治》
2009年第1期8-12,共5页
Journal of Dental Prevention and Treatment
关键词
PAR指数
正畸矫治
拔牙
下颌第一磨牙
PAR index
Orthodontic treatment
Extraction
Mandibular first molars
