摘要
目的:探讨替牙期重度骨性前牙反前方牵引治疗前后软硬组织的变化。方法:选择40例替牙期轻中度和重度骨性前牙反患者,单纯使用前方牵引器进行矫治。每例患者在矫治前后分别拍摄头颅定位侧位片,采用传统头影测量方法和Pancherz头颅参照系统对治疗前后的软硬组织变化进行分析比较。结果:前方牵引治疗结束后,两组患者前牙反解除,建立了正常的覆覆盖关系,磨牙关系基本中性,Ⅲ类骨面型明显改善。结论:①同时伴有上颌骨后缩和下颌骨前突的重度骨性前牙反病例,应早期进行前方牵引。②重度骨性前牙反前方牵引后,骨性变化(26%)明显小于轻中度组骨性变化(42%)。③单纯采用前方牵引治疗替牙期重度骨性前牙反病例,其软组织侧貌及骨骼改形均有显著性变化。
Objective：To evaluate the treatment effects of maxillary protraction treatment on severe skeletal anterior cross-bite in mixed dentition.Method：According to inclusion criteria of the study,forty patients with mild-moderate and severe skeletal anterior cross-bite in mixed dentition were selected and treated with maxillary protraction.For each patient,the lateral cephalogram was taken before and after treatment.Hard and soft tissue changes were analyzed by both traditional and Pancherz analysis to evaluate the effects of maxillary protraction.Result：After maxillary protraction,anterior cross-bite of all subjects were removed,and all were established normal overjet and overbite,treated to Class I molar relationships.Class Ⅲ skeletal type were obviously improved.Conclusion：①Accompanied by maxillary retrusion and mandibular protrusion the severe skeletal anterior cross-bite patients,should be performed early maxillary protraction.②After the maxillary protraction treatment on the severe skeletal anterior cross-bite patients,the skeletal changes（26 %） was obviously less than that of mild-to-moderate anterior cross-bite patients（42 %）.③After the simple maxillary protraction on the severe skeletal anterior cross-bite patients in mixed dentition,significant dentoskeletal and soft tissue changes and improvements were obtained.
出处
《临床口腔医学杂志》
2011年第6期373-376,共4页
Journal of Clinical Stomatology
基金
山东省科技攻关项目(2010GSF10269)
关键词
重度骨性前牙反
前方牵引
替牙期
Severe skeletal anterior cross-bite
Maxillary protraction
Mixed dentition
