摘要
目的：探讨替牙期AngleII类1分类伴下颌后缩患者早期治疗方法。方法：对27例替牙期Angle II类1分类伴下颌后缩儿童患者，采用上颌斜面导板加唇栅活动矫治器作早期治疗。治疗前后拍摄头颅侧位片，对12项硬组织指标进行配对t检验。结果：治疗效果明显，治疗前后SNA平均减小0．42°，SNB平均增加3．05°，ANB平均减小2．86°，Co-Pg平均增加6．30mm，Go—Pg平均增加2．34mm，N-Me平均增加4．53mm，ANS—Me平均增加3．01mm，Ar-Go平均增加2．36mm，U1-NA平均减小0．87°，L1-NB平均减小1．73°。上下颌骨位置关系、前牙覆拾、覆盖关系及面容均得到明显改善，治疗疗程4～6个月。结论：对替牙期Angle II类1分类伴下颌后缩患者采用上颌斜面导板加唇栅活动矫治器，能有效地促进下颌向前，而且制作简单。
s： Objective To discuss the early treatment for the patients of Angle class II division 1 with mandibular retrusion in the mixed dentition. Methods use the maxillary inclined plate together with lip grill removable appliance to cure 27 class II division I children patients with mandibular retrusion in mixed dentition.Their cephalometric radiographs before and after treament were compared in terms of 12 hard-tissue indicators. Results Significance of changes were statistically cephalometric data before and after treatment.SNA average reduction of 0.42°.SNB increased by 3.05°.ANB reduction 2.86°. Co-Pg increased by 6.30mm. Go-Pg increased by 2.34mm.N- Me increased by 4.53 mm ANS- Me increased by 3.01mm.Ar- Go increased by 2.36mm.U1-NA reduction 0.87°,L1- NB reduction 1.73°.The treatment period is 4-6 months and the effect is obvious. Molar is neutral jaw relation when the treatment is end.The mandible position is improved and the facial appearance changed apparently. Conclusion The treatment for the patients of Angle class II division 1 with mandibular retrusion in the mixed dentition can effectively promote the lower jaw forward and simply made.
出处
《中国美容医学》
CAS
2013年第20期2058-2061,共4页
Chinese Journal of Aesthetic Medicine
关键词
上颌斜导
唇栅
活动矫治器
ANGLE
II类
下颌后缩
maxillary inclined plate
class II
lip grill
removable appliance
mandibular retrusion
