摘要
目的:研究我国骨性二类错患者的病因机制是以上颌前突为主,还是下颌后缩为主,根据其病因机制找出合理的治疗方法。方法:在头颅定位侧位X线片上,以ANB角大于5°作为判定标准,随机选取56例骨性二类错患者为研究样本,以SNA、SNB为分析指标,分析上、下颌在矢状方向上的突、凹程度代表的结构特征,以分析骨性二类错形成的病因机制。结果:所研究的骨性二类错患者中92.9%的患者不存在上颌前突病因机制,67.9%的患者存在下颌后缩病因机制,而且这种上、下颌骨病因机制方面的差异性是有显著的统计学意义的。结论:我国骨性二类错患者是以下颌后缩为主要机制的,提示要注重对于这种骨性二类错患者的早期下颌前移矫治,而在对于生长发育高峰期已过的患者,要注意使用能代偿这种下颌后缩骨性机制的矫治设计方案。
Objective： To find out proper therapy for skeletal class Ⅱ malocclusion, and to investigate etiological mechanism of such malocclusion patients. Methods： Using eephalometrie measured ANB angle above 5°as the sampling criterion, 56 patients were randomly selected as skeletal class Ⅱ malocclusion for the study. The status of the maxillary protrusion and mandibular retrusion of the patients were investigated to determine their sagittal patterns. Then the etiological mechanism was analyzed for the skeletal class Ⅱ malocclusion. Results： There was no the maxillary protrusion in nearly 92.9% of skeletal claas Ⅱ malocclusion patients, whereas the mandibular retrusion was found in 67.9% of patients. The difference between the maxillary and mandibular mechanism for skeletal class Ⅱ malocclusion was statistically significant. Conclusion： It is concluded that the dominant mechanism for Chinese skeletal class Ⅱ malocclusion patients is mandibular retrusion. Therefore, the early mandibular advancement therapy for such patients should be suggested. And the treatment protocol of mandibular refrusion compensation should be suggested for adult patients.
出处
《口腔医学研究》
CAS
CSCD
2007年第1期95-97,共3页
Journal of Oral Science Research
关键词
骨性二类错[牙合]
上颌前突
下颌后缩
病因机制
Skeletal class Ⅱ malocclusion Maxillary protrusion Mandibular retrusion Etiological mechanism
作者简介
赵迪（1978-），女，山东青岛人，主治医师，硕士，研究方向：口腔正畸学。
通讯作者，曹军，电话：（029）84776135。
