摘要
目的:研究安氏Ⅱ1错畸形应用Headgear-activator矫治器治疗前后软硬组织的变化及其相关性。方法:选择生长发育高峰期的50例安氏Ⅱ1错病例,分为治疗组27例,采用Headgear-activator矫治器治疗,对照组23例不进行治疗,定期参加随访,对两组病例治疗前后拍摄X线头颅定位侧位片,对所测角度和线距计算x±s,利用配对t检验比较测量指标的变化,对特定的软硬组织测量指标进行相关分析。结果:大部分指标都发生了明显变化,与对照组比较差异均有统计学意义(P<0.05);A'Ls-FH、NsPg'-FH、Z angle和GSnPg'的变化与颌骨位置和上切牙倾斜度的相关性明显(P<0.05)。结论:Headgear-activator可明显改善下颌后缩患者软组织侧貌,其改变主要源于下颌的前伸和上切牙的直立。
Objective：To evaluate the changes of soft tissue in curing Class Ⅱ division 1 malocclusion cases with Headgear-activator appliance, analyze the correlation between these changes. Methd：50 Class Ⅱ division 1 malocclusion subjects who were at peak high velocity on the growth curve were divided into two groups. Standardized lateral cephalograms were taken for each patient of the two groups before and after treatment. SPSS 11.0 software package was used to calculate the mean and standard deviation, matched t-test was used to evaluate the changes of the soft tissues.the correlation between the soft tissue and hard tissue changes were analyzed Result： Most variables changed obviously （P 〈0.05）,There was statistically significant difference. A＇Ls-FH,NsPg＇-FH,Z angle and GSnPg＇ had close relationship with mandible position and upper incisors position. Conclusion： Soft tissue profile were effectively improved .The changes result from mandible＇s moveing forward and upper incisior＇s straighting.
出处
《临床口腔医学杂志》
2011年第12期707-709,共3页
Journal of Clinical Stomatology
基金
河北省卫生厅医学科学研究重点课题计划(20110658)
