无牙颌患者自然头位的研究  

The sutdy of natural head posture in edentulous patients before and after oral rehabilitation

作　　者：谢秋菲[1] 陈利[1] 冯海兰[1] 黄东坡[2] 

机构地区：[1]北京大学口腔医学院修复科,100081 [2]北京大学口腔医学院放射科,100081

出　　处：《中华口腔医学杂志》2003年第1期35-38,共4页Chinese Journal of Stomatology

基　　金：卫生部临床科室重点建设基金资助项目 ( 970 2 0 2 17)

摘　　要：目的　了解无牙颌患者相对于有牙个体自然头位 (naturalheadposture ,NHP)的差异 ,以及义齿戴入即刻和戴用后短期NHP的变化。方法　分别选取 2 0例无牙颌患者和 2 2名有牙对照组个体 ,采用视线标记的头颅定位侧位片记录NHP。无牙颌患者拍摄义齿戴前、义齿戴入即刻和戴用 3个月后 3张X线片。有牙对照组拍摄一张X线片。选取 6项角度测量值评价NHP ,3项角度测量值和 2项线距测量值评价下颌骨的位置。比较无牙颌患者义齿戴前与有牙对照组上述指标的差异 ,以及义齿戴入即刻和戴用 3个月后的变化。结果　无牙颌患者与有牙对照组相比 ,颅颈角增大、颈椎曲度减小 ,但头位测量值的差异无显著性。下颌骨垂直向明显上移 (P <0 0 5)。义齿戴入即刻 ,颈椎曲度显著增加 (P <0 0 5)。义齿戴用 3个月后 ,颅颈角显著减小 (P <0 0 5)。结论　无牙颌患者在义齿戴入即刻和戴入后短期 ,自然头位出现一定程度的改变 ;与不戴义齿的头位相比较 。Objective To study the natural head posture (NHP) of edentulous patients compared with dentate people and to understand NHP shift immediately inserting complete dentures and three months after denture wearing. Methods The NHPs of twenty edentoulous patients and twenty two dentate subjects were recorded with cephalometric technique. The NTPs of edentulous patients were exposed three times, before inserting, right after inserting and three months after inserting dentures. The NHPs of dentate subjects were recorded once as a controlled group. Six angles measured from the radiographs were evaluated for the NHP and three angles and two linear measures for the mandibular position.Results Compared with dentate subjects, the craniomandibular angles of the edentulous patients increased and the camber of the cervical columns decreased,but changes of the NHP were not significant The mandible showed a significant upward moving( P < 0 05) and an insignificant forward moving. At the time of denture insertion, the camber of the cervical columns significantly increased( P < 0 05). Three months after using the dentures, the craniomandibular angles of the patients obviously decreased. ( P < 0 05). Conclusion The shift of NHP after denture inserting does exist. The shifted NHP of the patients with dentures is a new balanced posture and closer to the normal position than the NHP of them without dentures

关 键 词：无牙颌 自然头位 放射测量术 牙缺失 义齿 正畸治疗 

分 类 号：R783[医药卫生—口腔医学]