改良颊侧多曲簧矫治器纠正早期安氏Ⅲ类错(牙合)胖下颌偏斜

摘要

目的:通过头颅定位后前位片测量,探讨改良颊侧多曲簧活动矫治器纠正早期安氏Ⅲ类错(牙合)且伴下颌功能性偏斜,改善早期功能性下颌偏斜.方法:混合牙列早期安氏Ⅲ类错(牙合)且伴有下颌功能性偏斜患者20例,采用改良颊侧多曲簧活动矫治器的方法,矫治前后头颅定位后前位片P-A测量分析,用统计软件处理数据.结果:改良颊侧多曲簧活动矫治器矫正早期安氏Ⅲ类错(牙合)且伴有下颌功能性偏斜后,下颌骨两侧结构不对称性有明显改善,下颌骨两侧综合长度差亦减小(P＜0.01),两侧下颌体长度差明显减小(P＜0.01).结论:由于早期安氏Ⅲ类错(牙合)且伴有单侧后牙反(牙合),导致的功能性下颌偏斜,采用改良颊侧多曲簧活动矫治器,可以使下颌骨的不对称得到一定的改善,是早期纠正下颌功能性偏斜的有效手段.%Objective To confirm that correction of the class III malocclusion with mandible deviation through the improved Buccal Multiloop removable appliance is associated with a change in early functional mandible deviation was the purpose of this Study. Methods 20 the class III malocclusion of mixed dentitions with mandible deviation were treated by improved Buccal Multiloop removable appliance for correction of anterior crossbite and unilateral posterior crossbite.Pretreatment and posttreatment tomograms were available for 20 of the patients.AII data was analysed by SPSS statistical software. Results After the correction of the class III malocclusion of mixed dentitions with mandible deviation by improved Buccal Multiloop removable appliance.craniofacial asymmetry improved significantly. Conclusion According to this study.early treatment of the class III malocclusion with mandible deviation were treated by improved Buccal Multiloop removable appliance is indicated to improve early functional mandible deviation.