• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Vojnosanitetski Pregled >Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study
【24h】

Skeletal changes in patients with mandibular prognathism after mandibular set back and bimaxillary surgery: A comparative cephalometric study

机译：颌骨组颌骨后颌骨后颌骨患者的骨骼变化：比较头颅研究

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bacground/Aim. Recently, maxillary and bimaxillary surgery gained the primacy in the surgical correction of class III deformities. The aim of this investigation was to compare the changes in the skeletal relationships in patients with mandibular prognathism after bimaxillary surgery. Methods. The study included 70 subjects divided into three groups. Twenty class III patients of the experimental group 1 underwent bilateral sagittal ramus osteotomy and twenty patients of the experimental group 2 were subjected to bimaxillary surgery. The control group consisted of 30 subjects with skeletal class I and physiological occlusion. Cephalometric research was conducted on 110 lateral cephalometric radiographs made in subjects of the experimental groups 1 and 2 before and after surgery and in subjects of the control group. Using the computer program “Dr. Ceph”, 30 linear and angular skeletal variables were analyzed on each radiograph. Results. Bimaxillary osteotomies changed most of variables that characterize the mandibular prognathism. The changes in the sagittal plane included the significant increase of sella-nasion to the A point (SNA) angle (by 4o on the average) and the A point to B point (ANB) angle (6°), and significant reduction in angles sellanasion to the B point (SNB) (3o), gonial angle (ArGoMe) (8°), gonial angle inferior (NGoMe) (6.2o), and Bj?rks sum (7°). The vertical relationships were normalized by significant reduction in overall anterior face height N-Me (by 5 mm on the average), the lower anterior face height ANS-Me (4 mm), significant increase in the total posterior face height S-Go (2.5–3 mm), lower posterior face height PNS-Go (4 mm), and significant reduction of the basal and mandibular plane angles. Conclusion. Compared to the isolated mandibular operations, bimaxillary surgery changes more efficiently the sagittal and vertical skeletal relations in patients with class III deformities and harmonizes more successfully the entire skeletal facial profile.
机译：bacground /瞄准。最近，上颌和双轴手术在III类畸形的手术校正中获得了最初的灵长造性。该调查的目的是比较骨髓手术后颌骨预后患者骨骼关系的变化。方法。该研究包括70名受试者分为三组。二十类实验组患者1患者接受双侧矢状RAMUS截骨术和20例实验组2患者进行了双蔓延手术。对照组由30名受试者组成，具有骨骼级和生理闭塞。在手术前后和对照组的受试者之前和之后的在实验组1和2的受试者中进行的110个横向头颅射线照相进行头部测量研究。使用计算机程序“博士在每个射线照片上分析了Ceph“，30线性和角度骨骼变量。结果。 Bimaxillary截骨术改变了表征下颌预后的大部分变量。矢状平面的变化包括罕有增加的罕有增加到点（SNA）角度（平均下4o）和点到B点（ANB）角度（6°），并且角度显着降低搅拌到B点（SNB）（3O），灯角（ARCOME）（8°），夜角度下（NGome）（6.2O）和BJ？RKS SUM（7°）。通过显着减少总体前面高度N-ME（平均5mm），垂直关系归一化，下前面部高度ANS-ME（4mm），总后面高度显着增加（ 2.5-3毫米），较低后面高度PNS-GO（4毫米），并且基础和下颌平面角度显着降低。结论。与孤立的下颌操作相比，Bimaxillary手术更有效地改变了III类畸形患者的矢状和垂直骨骼关系，并更成功地协调整个骨骼面部轮廓。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号