一项关于使用II类弹性牵引或固定功能矫治器治疗后II类错牙合畸形矫治的长期随访研究。
A long-term follow-up study of Class II malocclusion correction after treatment with Class II elastics or fixed functional appliances.
作者信息
Nelson Birgitta, Hägg Urban, Hansen Ken, Bendeus Margareta
机构信息
Department of Orthodontics, Public Dental Health Service, Malmo, Sweden.
出版信息
Am J Orthod Dentofacial Orthop. 2007 Oct;132(4):499-503. doi: 10.1016/j.ajodo.2005.10.027.
INTRODUCTION
The aim of this study was to compare dentofacial morphology and long-term follow-up changes in growing males with skeletal Class II malocclusions treated without extractions and with either Begg or Herbst appliances.
METHODS
Lateral cephalograms were obtained at the start of treatment, after active treatment, and after long-term follow-up.
RESULTS
Treatment effects differed between the groups, with usually more favorable effects in the Herbst group. However, during the follow-up period, many of the changes were reversed. During the total observation period, maxillary prognathism and lower anterior facial height increased more in the Begg group than in the Herbst group.
CONCLUSIONS
Although there were initial marked differences in the treatment outcomes, most of these differences were not sustained over the longer term.
引言
本研究的目的是比较使用Begg矫治器或Herbst矫治器对生长发育期的骨骼Ⅱ类错牙合男性患者进行非拔牙矫治后的牙颌面形态及长期随访变化。
方法
在治疗开始时、积极治疗后以及长期随访后获取头颅侧位片。
结果
两组的治疗效果有所不同，Herbst组通常效果更佳。然而，在随访期间，许多变化出现了逆转。在整个观察期内，Begg组上颌前突和下前牙面部高度的增加比Herbst组更多。
结论
尽管治疗结果最初存在显著差异，但从长期来看，这些差异大多并未持续存在。
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