【摘要】 目的:探讨非手术治疗的东北地区女性双颌前突患者颅颌面的特征。方法:将80例非手术治疗的双颌前突患者分为2组,第1组ANB角≤4.7°,第2组6.7°>ANB角>4.7°,对所有患者的X线头颅定位侧位片进行测量,测量值同北京地区正常正常值进行比较,组间进行比较。结果:东北地区女性双颌前突患者的总体特征是前颅底短,后颅底长,且前突的上颌骨、下颌骨长度较长,前面高、前上面高长,上下切牙唇倾明显,颏较厚,下唇相对于软组织审美平面较突。组间的特征性差异:第1组的双颌前突患者矢状向异常主要在上颌,面型趋向于适中面型;第2组矢状向异常主要在下颌,离散性面型。结论:非手术治疗的女性双颌前突患者有其独特的错畸形特征。在治疗时应注意2组颌骨位置的调整,精确把握各组的特征,才能更好的改善患者较凸的侧貌。更多还原

【Abstract】 Objective:To study the craniofacial characters of non-surgical treatment of the female patients with bimaxillary protrusion in northeastern region of China.Methods:80 patients with bimaxillary protrusion in northeastern region of China received orthodontic treatment were divided into two groups,the ANB angles of the first group were no more than 4.7°,the second one exceeds 4.7°.Cephalograms were analyzed in all the subjects.Compared with the normals in Beijing.Results: Most of the female patients with bimaxillary protrusion had shorter anterior cranial bases,longer posterior cranial bases,longer and more prognathic maxillas,longer mandible lengths,higher anterior and anterior upper facial heights,obvious procumbency,thicker mental thickness,procumbent soft tissue profile with a low lip line.Different groups had the features as follows:the main abnormal factors were the maxilla in sagittal aspect of the first group.They had the suitable facial planes.The second group’s abnormal factors were the mandible,they had the divergent facial plane.Conclusion:The non-surgical treatment′s patients of bimaxillary protrusion have unique character.The results suggest it is of critical importance to adjust the position of jaws to benefit the improvement of facial features.更多还原