摘要
目的应用Tweed—Merrifield分析法对安氏Ⅱ类患者进行难度指数分析研究，了解Ⅱ类错[牙合]的形态特征。方法对符合纳入标准的156例Ⅱ类错[牙合]进行Tweed-merrifield鉴别诊断难度指数分析，按性别、难度指数程度分组研究，观察各因素对错袷的影响特征。结果Ⅱ类错[牙合]难度指数的男、女性别分布无统计学差异；间隙分析难度指数和颅面分析难度指数在三个组中所占比例分别为：轻度组为62．7％和37．3％；中度组为41％和59％；重度组为25％和75％，三组都有统计学差异。结论男、女性别与Ⅱ类错[牙合]难度指数无关。研究样本中难度指数轻度组占14．10％，中度组占46．15％，重度组占39．74％。随着骨骼问题的出现和加重，颅面分析指数难度在总难度中所占的比率逐步上升，治疗难度逐渐增加。
Objective To investigate the treatment difficulty of Angle Class Ⅱ malocclusion with Tweed-Merrifield differential diagnosis method. Methods 156 cases of Class Ⅱ were selected to analyze with Tweed-Merrifield differential diagnosis, the samples were divided according to the Total Difficulty and gender, The influence of each factors on the malocclusion were investigated. Results There is no significant divergence between gender （P〉0. 05）. In the mild group, the percentage of the Cranial Facial Analysis in the total Difficulty is 62.7%. The percentage of the Total Dentition Space Analysis is 37.3%. In the moderate group, the percentage of the Cranial Facial Analysis and the Total Dentition Space Analysis is 41%0 and 59%. In the severe group, the percentage of the Cranial Facial Analysis and the Total Dentition Space Analysis is 25% and 75%. All have significant divergence. Conclusions There is no relation between the sex and the treatment difficulty of the malocclusion of Class Ⅱ. The percentage of the mild group, the moderate group and the severe group in all samples is 14.10%, 46. 15% and 39.74%. The ratio of the Cranial Facial Analysis to the Total Dentition Space Analysis is increased and the total difficulty is increased with the severity of skeletal discrepancy .
出处
《中华口腔正畸学杂志》
2009年第2期104-107,共4页
Chinese Journal of Orthodontics
