摘要
目的 研究成人单侧后牙反 牙合 患者下颌及颞颌关节的对称性 .方法 对 2 0例成人单侧后牙反 牙合 患者及 2 3例正常 牙合成人拍摄定位颏顶位片及双侧颞颌关节中位断层片进行描记分析 .结果 成人单侧后牙反 牙合 患者在下颌坐标系中反牙合 侧 DMP点更靠远中及颊侧 ,在颅底坐标系中反 牙合 侧CMP,DMP点更靠远中 ,DMP,MM,DM点更靠侧方 .结论 相对下颌坐标系 ,反 牙合 侧第一磨牙位置与对侧相比更靠远中及颊侧 .在骨性结构上 ,未见下颌的不对称 .相对颅底平面 ,下颌骨向反 牙合
AIM To determine whether condylar position in adults with unilateral posterior crossbite is different from that found in adults with normal occlusion and to compare mandibular asymmetry in adults with unilateral posterior crossbite with that of the normal group. METHODS Submentovertex radiographs and horizontally corrected tomographs were taken for 20 adults with unilateral posterior crossbite and 23 normal occlusion. RESULTS Compared with the mandibular coordinate system, the DMP were more distal and lateral on the crossbite side. In comparison with the cranial floor coordinate system, CMP, DMP were located more posteriorly on the crossbite side. DMP, MM, DM were more laterally located on the crossbite side. CONCLUSION Relative to a mandibular coordinate system, the mandibular first molar on the crossbite side is more lateral and relatively distal in comparison to the contralateral side. Skeletally, the mandibular showed no asymmetry. Compared with the cranial floor, the mandibular is 'rotated'.
出处
《第四军医大学学报》
北大核心
2002年第14期1306-1308,共3页
Journal of the Fourth Military Medical University
