成人与青少年固定正畸患者锁槽脱落的比较研究

目的　探讨正畸治疗过程中成人与青少年患者锁槽脱落的差异及脱落原因。方法　收集成人及青少年患者各 30例 ,自开始固定正畸治疗 1年内锁槽脱落的资料 ,采用生存分析 ,进行 2样本之间关于患者依从性的比较。结果　成人患者组的锁槽总脱落率低于青少年组 ,2组之间差异有显著性 (P <0 0 5 ) ;青少年组下前牙区锁槽脱落率最高 ,与成人组之间的差异有显著性 (P <0 0 5 ) ;进食过硬食物导致锁槽脱落的原因在构成比中最大。结论　成人正畸患者医嘱依从性强于青少年 ,探究锁槽脱落原因及构成比有利于正畸医师提高临床矫治疗效。生存分析是统计锁槽脱落的有效方法

A comparative study of the bracket bond failure between adults and adolescents receiving fixed orthodontic therapy

Objective To evaluabe the bracket bond failure and its causes between adult and adolescent patients during fixed orthodontic therapy. Methods Bracket bond failure data of 30 adults and 30 adolescents, veceiving fixed orthodontic therapy, have been collected within the first 12 visits,respectively. The compliance has been analyzed with survival analyse between the two groups. Result The general bracket bond failure rate in the adult group is lower than that of the adolescent group and the difference is significant( P <0.05). In the adolescent group, the failure rate for mandibular anterior teeth is highest and different from that of the adult group( P <0.05). The failure rate resulted from biting hard food is ranked No.1. Conclusions The compliance of the adults veceiving fixed orthodontic therapy is better than that of the adolescents. The investigation of bracket bond failure causes is beneficial in helping orthodontists improve orthodontic practice and raise clinical efficiency. The survival analysis is effective in evaluating the bond failure