国际口腔医学杂志2012，Vol.39Issue(3)：305-307,3.DOI:10.3969/j.issn.1673-5749.2012.03.007
下颌第三磨牙近中阻生相关因素的头影测量分析
A cephalometric study on relevant factors of the mesial impaction of mandibular third molars
赵书平 1王虎 1李果 1任家银 1吴万红 1袁珊珊1
作者信息
- 1. 四川大学华西口腔医院放射科,成都,610041
- 折叠
摘要
Abstract
Objective To evaluate the mechanism of the mesial impaction of mandibular third molars (M3) in adults and the relationship between the mesial impaction or eruption of M3 and the development of maxillary and mandible. Methods 72 subjects who have taken panoramic radiographs and lateral cephalometric radiographs before orthodontic treatments were divided into two groups based on the status of M3: Impaction group and eruption group, and all cephalometric radiographs were analyzed for the two groups. Results Mandibular body length (Go- Po'), ramal width (W), mandibular plane angel (MP-FH), lower anterior face height ANS-Me) and ramal length/ mandibular length ratio (Co-Go/Co-Po) were significantly difference (P<0.05) in the impaction group than in the eruption group. W and Co-Go/Co-Po were significantly increased (P>0.05) and Go-Po', ANS-Me, MP-FH were decreased in the impaction group. The impaction and eruption groups did not differ significantly (P<0.05) in respect to Co-Po, Co-Go, U1- L1 angel and ANB angle. Conclusion The mesial impaction or eruption of mandibu- lar M3 seemed to be relevant to the rotational growth of the mandibles and the pattern of facial growth. M3 mesial impactions were more likely to occur in subjects with anterior facial rotation and short facial forms.关键词
全景X线片/第三磨牙/阻生/头影测量分析Key words
orthopantomograph/ third molar/ impaction/ cephalometric analysis分类
医药卫生引用本文复制引用
赵书平,王虎,李果,任家银,吴万红,袁珊珊..下颌第三磨牙近中阻生相关因素的头影测量分析[J].国际口腔医学杂志,2012,39(3):305-307,3.
