摘要
目的 :分析固定斜面导板治疗生长发育期骨性Ⅱ类 1分类错牙合患者的作用机制。方法 :通过X线头影测量分析应用固定斜面导板治疗患者 18例 ,男 10例 ,女 8例 ;空白对照组 12例 ,男 6例 ,女 6例 ;年龄 11.5～ 13 .8岁 ,平均 12 .4岁 ;ANB≥ 5° ,GoGn SN≤ 3 8° ,磨牙尖对尖到完全远中关系的Ⅱ类 1分类患者。收集治疗 (观察 )前后X线头颅侧位片 ,测量项目 17项 ,进行统计学分析。结果 :①治疗组的ANB减小 ,下颌体增长 ,矢状关系改善 ,覆盖减小 ;②治疗组前面高 ,后面高显著增加 ,而后面高 /前面高减小 ,垂直关系得到改善 ;③治疗组下第一恒磨牙显著萌长 ,咬合打开 ,覆牙合减小。结论 :固定斜面导板可以刺激下颌体生长 ,改善面部比例关系 ,是一种有效的打开咬合 ,调整牙合位的装置。
砄bjective: To evaluate the effects of fixed inclined bite plate on jaw bone and dentition in juveniles with Class Ⅱ division 1 malocclusion.Methods: Eighteen patients(10 male and 8 female aged 11.5~13.8 years old) were treated with fixed inclined bite plate for bite opening, twelve patients(6 male and 6 female) were involved as the control. Cephalograms were taken before and after the treatment.Results: After treatment ANB was significantly reduced and mandibular development was improved; AFH and PFH were significantly increased; the first molar in mandible was siginificantly elongated.Conclusion: Fixed inclined bite plate is effective in the improvement of sagittal skeletal relationship and in the orthodontic treatment in the juveniles with Class Ⅱ division 1 malocclusion.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2001年第2期121-123,共3页
Journal of Practical Stomatology
关键词
安氏Ⅱ类错He
固定斜面导板
测颅法
图像分析
Angle class Ⅱ malocclusion
Fixed inclined bite plate
Cephalometry
Image analysis
