错畸形正畸治疗后的稳定性研究  

Long-term stability of malocclusion after orthodontic treatment

作　　者：刘妍 许天民 林久祥 

出　　处：《口腔正畸学》2001年第2期78-81,共4页Chinese Journal of Orthodontics

摘　　要：目的　本研究旨在探讨Ⅰ、Ⅱ类错畸形患者正畸治疗后牙的变化趋势 ,并探讨影响和预测牙变化的要关因素。以期为临床实践提供参考。方法　选取 11— 18岁之间的安氏Ⅰ ,Ⅱ类错畸形患者 72例。选择十项模型测量指标对牙变化进行评估。对所得数据采用配对t检验 ,多因素方差分析 ,多元相关分析。结果　保持后牙关系有向治疗前回复的趋势 ,但仍旧保持了大部分的治疗效果。各项指标的变化在拔牙与不拔牙之间 ,安氏Ⅰ ,Ⅱ类之间无差别。上尖牙间宽度较下尖牙间宽度更稳定。下尖牙间宽度保持后缩小明显且伴随下前牙拥挤增大。Objective To evaluate the trend of change in Angle’sⅠ and Ⅱ malocclusion after orthodontic treatment, and to analyze some possible factors which may predict or affect these changes, providing some reference for the clinical practice.Method The sample consisted of 64 patients with 34 Angle’s Ⅰ and 30 Angle’s Ⅱ malocclusion. Ten variables were chosen to evaluate the change of occlusion. Paired T test, analysis of variance,correlation analysis were applied to the data.Results The dental relationship tend to return toward their pretreatment values after treatment, while still remaining a major part of the correction. None of the values have any significant differences between the extraction and non extraction group, Angle’s Ⅰ and Angle’s Ⅱ malocclusion. The maxillary intercuspid width tended to be more stable than the mandibular one. The mandibular intercuspid width decreased significantly accompanied by the relapse of mandibular crowding.

关 键 词：错HE畸形 正畸治疗 稳定性 覆HE 覆盖 

分 类 号：R783.5[医药卫生—口腔医学]