应用PAR指数评价安氏Ⅱ类1分类错畸形的矫治效果  

PAR evaluation of treated Class Ⅱ^1 patients

作　　者：王天丛[1,2] 顾敏[1,2] 陈莉花[1,2] 陈文静[1,2] 

机构地区：[1]南京医科大学口腔医学研究所 [2]南京医科大学附属口腔医院正畸科,南京210029

出　　处：《口腔医学》2010年第4期233-235,共3页Stomatology

摘　　要：目的采用PAR指数评价安氏Ⅱ类1分类错畸形矫治的效果。方法选择100例安氏Ⅱ类1分类错患者,分为4组:不拔牙组、拔上下颌第一前磨牙组、拔上颌第一前磨牙下颌第二前磨牙组、拔上颌第一前磨牙组,采用PAR指数对4组患者矫治前后的牙齿排列、颊侧咬合关系、覆盖、覆及中线情况进行评估和比较。结果治疗前四组病例上前牙排列、下前牙排列及总分有差别;治疗后四组病例颊侧咬合关系、总分、权重总分有差别;第一组及第四组治疗前后中线分值没有差别,第四组治疗前后下牙列排列没有差别;四组病例权重总分差均大于22分,其中第三组权重分差比其他三组大,权重总分减少百分率均大于70%,第一组减少百分率较另外三组低。结论对于安氏Ⅱ类1分类患者经四种方式治疗后均能得到极大改善,但拔牙矫治较不拔牙矫治病例改善更为明显,以上颌拔除第一前磨牙,下颌拔除第二前磨牙改善最为明显。Objective To evaluate treatment changes and quality of finishing occlusion in Class Ⅱ1 patients.Methods Dental casts of 100 subjects were evaluated.The peer assessment rating（PAR）index was obtained from pretreatment and posttreatment dental casts.Results Discrepancy of upper anterior segment,lower anterior segment and total points were inconsonant among four groups before treatment.Buccal occlusion,total points and weighted total points were inconsonant among four groups after treatment.Centreline had no statistical difference between pretreatment and posttreatment of group 1 and group 4,respectively.Discrepancy of lower anterior segment and posterior segment had no statistical difference between pretreatment and posttreatment of group 4.The reduction in weighted total points of four groups was bigger than 22.The reduction in weighted total points of group 3 was bigger than that of other three groups.The percentage reduction in weighted PAR scores of four groups was bigger than 70%.The percentage reduction in weighted PAR scores of group 1 was smaller than that of other three groups.Conclusions All cases of four groups greatly improved.However,the extraction treatment was more efficient.Group 3 showed the greatest treatment among four groups.

关 键 词：安氏Ⅱ类错畸形 PAR指数 正畸治疗结果 

分 类 号：R783.5[医药卫生—口腔医学]