EFFECTS OF A FIXED MAGNETIC APPLIANCE ON THE DENTOFACIAL COMPLEX
EFFECTS OF A FIXED MAGNETIC APPLIANCE ON THE DENTOFACIAL COMPLEX
复制标题
DOI：
10.1016/0889-5406(89)90410-1
复制
发表时间：
1989-06-01
影响因子：
3
通讯作者：
NANDA, R
中科院分区：
文献类型：
--
作者：
KALRA, V;BURSTONE, CJ;NANDA, R
本研究的目的是设计和评估一种固定磁性矫治器的效果，该矫治器将下颌骨铰链打开并对牙齿施加侵入力。10例患者年龄在8岁到10岁6个月之间，伴有下颌后缩和下面部高度增高的II类1类错颌畸形。治疗4个月，取出矫治器，随访4个月。10名年龄、性别和牙面特征相似的儿童作为对照组，未接受任何矫治治疗。牙面复合体的形态学变化通过侧位头颅造影和研究模型进行评估。此外，还评估了颞下颌关节和肌肉功能。治疗期间下颌骨长度增加3.2 mm，面部凸角减小2.8°，上、下牙平均每牙嵌入1.5 mm，下颌骨平面角减小1.3°。随访期间观察到部分反弹性喷发；然而，所有其他的变化都是稳定的。
The purpose of the study was to design and evaluate the effects of a fixed magnetic appliance that hinged the mandible open and exerted an intrusive force on the teeth. Ten patients between the ages of 8 years and 10 years 6 months, with Class II, Division 1 malocclusion associated with mandibular retrusion and increased lower facial height, were treated with this appliance. The length of treatment was 4 months, after which the appliance was removed and the patients were followed up for 4 months. Ten children with similar age, sex, and dentofacial characteristics acted as controls and did not receive any appliance therapy. Changes in morphology of the dentofacial complex were evaluated by use of lateral cephalograms and study models. In addition temporomandibular joint and mmuscle functions were assessed. During treatment mandibular length increased 3.2 mm, angle of facial convexity decreased 2.8.degree., the upper and lower teeth intruded an average of 1.5 mm each, and the mandibular plane angle decreased 1.3.degree.. In the follow-up period, some rebound eruption was noted; however, all other changes were stable.