摘要
目的基于完成病例石膏模型及全景片并借助某一疗效评价标准对安氏Ⅱ^1分类错[牙合]畸形经直丝弓矫治技术治疗后的疗效进行客观评价，为提高正畸临床质量提供参考。方法按照美国正畸专科医师委员会（ABO）制定的客观评分标准，对81例经同济大学口腔医学院正畸研究生采用直丝弓矫治技术治疗完成的安氏Ⅱ^1分类错[牙合]畸形病例（拔牙组45例，不拔牙组36例）的石膏模型和全景片进行测量记分（累计扣分，最满意者为0分），统计分析整体及各分组间的客观疗效。结果有关正畸治疗完成后的客观疗效，81例患者平均累计扣分为30．44±4．46，按照ABO疗效满意的标准（累计扣分〈30），本研究中疗效满意者的比例为39．5％。安氏Ⅱ^1分类拔牙组的平均累计扣分为29．80±4．76，小于非拔牙组的31．25±4．42，但两者之间差异无显著性（P〉0．05）。在矢状向咬合关系及根平行方面，拔牙组疗效明显优于非拔牙组（P〈0．05）；而在牙齿邻面接触方面，拔牙组疗效明显劣于非拔牙组（P〈0．05）。结论严格按照ABO基于石膏模型及全景片的正畸疗效评价标准，经我院正畸研究生完成的安氏Ⅱ^1分类错[牙合]畸形病例的满意度尚有待提高；针对拔牙及不拔牙病例的不同特点，应针对性地采取各种措施以提高客观疗效。
Objective Based on the final dental casts and panoramic radiographs, to assess the treatment outcome of Class Ⅱ division 1 malocclusion treated with straight-wire appliance using objective grading system （OGS） established by the American Board of Orthodontics（ABO）. Methods Eighty-one randomly selected cases with Class Ⅱ division 1 malocclusion were recruited. OGS score were measured on posttreatment dental casts and panoramic radiographs （Subtraction score is accumulated and 0 score is subtracted for the best treatment outcome）. Results The mean OGS score for all cases was 30. 44±4. 46. The mean OGS score for the extraction group was 29.80±4.76. Compared with 31.25±4. 42 for the nonextraction group, the difference was insignificant（P〉0. 05）. Compared with nonextraction group, significantly lower OGS scores of occlusal relationship and root angulation were found for extraction group （P〈0. 05） ; Compared with extraction group, a significantly lower OGS scores of interproximal contact was found for nonextraction group（P〈0. 05）, Conclusions The satisfaction degree of treatment outcome needed to be improved. According to the characteristics of extraction or nonextraction cases, various measures should he taken to improve objective outcome.
出处
《口腔正畸学》
2007年第4期173-176,共4页
Chinese Journal of Orthodontics
