摘要
目的 采用X线头影测量技术及统计学分析 ,探讨下颌角前切迹深度与颅面形态结构的关系。方法 选择南昌地区恒牙列早期深、浅下颌角前切迹患者各 2 1例 ,根据角前切迹深度将患者分为两组 ,每位患者均摄矫治前X线头颅定位侧位片 ,测量角度及线距项目各 2 2项 ,对两组患者间的测量结果进行统计学分析。结果 深角前切迹组较浅角前切迹组下颌角显著增大 ,下颌支及下颌体长度以及下颌体高度减小。两组相比 ,深角前切迹组下颌骨明显顺时针旋转 ,颏部位置明显后移 ,面角显著增大 ,前面高也显著增大。结论 深角前切迹患者下颌骨大小发育不足 ,顺时针旋转明显 ,面部垂直生长倾向显著。
Objective To evaluate the correlation between craniofacial morphology and antegonial notch depth of the mandible.Methods 42 patients of early permanent dentition from Nanchang city, 21 with shallow and 21 with deep antegonial notch were selected. Lateral cephalometric film before treatment were taken. Hard tissue angular and linear measurement were performed. The correlation between antegonial notch depth and craniofacial morphology were analysed statistically.Results The angular measurements of SN GoGn, S ArGo, FH GoMe,and ANS Xi Pm were significantly greater in the deep antegonial notch group. Other angles as SNB, SNP BaN CCGn, FH NPg and MD AA were significantly greater in the shallow antegonial notch group. For the linear measurements, those items as N Me, ANS Me,Convexity and LM GoGn were significantly greater in the deep antegonial notch group.Conclusion The deep antegonial notch group showed steeper mandibular plane, smaller chin, greater anterior facial height and gonial angle, and has a mandible with more backward and downward growth.
出处
《上海口腔医学》
CAS
CSCD
2001年第3期217-220,共4页
Shanghai Journal of Stomatology
关键词
下颌角前切迹
恒牙列
颅面形态
Antegonial Notch Depth
Craniofacial Morphology
Permanent Dentition
