改良前方牵引矫治器治疗上颌后缩畸形患者的疗效观察  

A Clinical Study on the Treatment of Maxillary Retraction Deformity with Modified Maxillary Protrusion Appliance

作　　者：王鹏[1] 苏哲君[1] 张兴乐[1] 尹雪莲[1] 赵婵媛 霍峰[1] WANG Peng;SU Zhejun;Zhang Xingle(The Affiliated Hospital of Chengde Medical College,Hebei Chengde 067000,China)

机构地区：[1]承德医学院附属医院口腔科,河北承德067000

出　　处：《河北医学》2018年第12期2029-2032,共4页Hebei Medicine

基　　金：河北省承德市科学技术研究与发展计划项目;(编号:20122157)

摘　　要：目的:探讨应用改良前方牵引矫治器治疗替牙期上颌后缩畸形伴牙弓后段拥挤骨性III类错牙合患者的疗效。方法:40例替牙期上颌后缩为主骨性III类错牙合患者,应用改良前方牵引器,口外面罩牵引,口内推磨牙向后配合腭部扩弓,进行上颌前方牵引治疗,对治疗前后X线头影测量结果进行分析。结果:前牙覆盖平均增加3.6mm,上齿槽座点A点平均前移2.1mm,下颌平面角平均增加1.9度,近中移动的上颌第一磨牙平均后移2.5mm,上下颌骨间位置关系明显改善,软组织侧貌明显改善。结论:改良前方牵矫治器,可有效治疗上颌后缩畸形患者的骨性III类关系和改善侧貌外形,并且使近中移动的第一磨牙后移,解除牙弓后段拥挤。Objective:To investigate the effect of maxillary protrusion appliance on the treatment of patients with maxillary retraction deformity during the mixed dentition period with the crowding of the posterior segment of the dental arch.Methods:The modified maxillary protrusion appliances were used to treat 40 cases of skeletal class III malocclusion with maxillary retraction during mixed dentition period.A facemask was used on the face to pull maxillary forward,palatal appliance was used to push molars back and palatal expansion in the mouth.For each patient,the lateral cephalogram was taken before and after treatment.Hard and soft tissue changes were analyzed to evaluate the effects of maxillary protrusion.Results:The anterior teeth overjet increased by 3.6mm,the average forward movement of point A subspinale was 2.1mm,mandibular plane angle was increased by 1.9°on the average,maxillary first molar average 2.5mm backwards.The position relation between maxillary and mandible was improved obviously,and the lateral appearance of soft tissue was improved obviously.Conclusion:The modified maxillary protrusion appliance could effectively treat skeletal class III malocclusion relationship and lateral appearance of the patients with maxillary retraction deformity,and made the first molars moving backward and relieve the dental arch crowding of the posterior segment.

关 键 词：上颌后缩 牙列拥挤 骨性Ⅲ类错牙合 改良前方牵引器 替牙期 

分 类 号：R783.5[医药卫生—口腔医学]