摘要
目的研究微种植体支抗辅助矫治Ⅲ类错牙合时,远中整体移动下颌牙列对上气道的影响。方法选择12例需要远中移动下颌牙列的Ⅲ类患者,在下颌植入微种植体支抗,利用微种植体远中移动下颌牙列,测量治疗前后X线头影的上气道大小以及牙颌角度,并作统计分析。结果上气道舌根后的咽腔径(PAS)、下咽腔的矢状径(LPW)、鼻咽腔的矢状径(UPW)变小,并且PAS变化明显,L1-MP变小,SNA略有变大,其余变化无统计学意义。结论利用微种植体支抗远中整体移动下颌牙列矫治Ⅲ类错牙合时,会导致舌后气道变小。
Objective To investigate the effect of distalization of the lower dentition using the micro-implant on the upper airway dimensions in patients with class Ⅲ malocclusion. Methods 12 patients were selected to distalize the lower dentition with the micro-implant. The cephalometric radiographs of the pre- and post-treatment upper airway and dental changes were measured and statistically analyzed. Results There were statistically significant reductions in LPW,UPW and especially PAS. Meanwhile,obvious decreasing of L1- MP and slightly increasing of SNA were found. Other changes had no statistically significant differences. Conclusion The treatment of distalizing the lower dentition by using micro-implant leads to the narrowness of upper airway,mainly in PAS area.
作者
蒲晓芬
王震东
兰庭超
许衍
PU Xiaofen WANG Zhendong IAN Tingchao XU Yan(Department of Orthodontics, Shanghai Stomatological Hospital,200001, China)
出处
《口腔医学》
CAS
2016年第11期1020-1022,共3页
Stomatology
基金
上海市卫计委面上项目(201540260)
关键词
微种植体
上气道
头影测量
Ⅲ类错牙合
micro-implant
upper airway
cephalometry
class Ⅲ malocclusion
