摘要
目的研究I类骨面型深覆盖患者牙和牙槽的特征。方法用方差分析比较60例I类骨面型正常覆盖和深覆盖患者的10项X线头影测量项目。结果与正常覆盖组相比,I度深覆盖组患者的(?)-SN、MxAAH增大(P＜0.05),(?)-NA增大(P＜0.01)；Ⅱ度深覆盖组患者的(?)SN、(?)-NA、MxAAH增大(P＜0.01)。结论上颌切牙位置和轴倾度的变化及下颌切牙唇向代偿的缺乏可能是产生I类骨面型深覆盖的原因之一。上颌前部牙槽高度增加可能是I类骨面型深覆盖的代偿性变化。
Objective To investigate the dentoalveolar characteristics in skeletal class Ⅰ patients with excessive overjet. Methods Ten cephalometric measurements of 60 skeletal class Ⅰ patients with excessive overjet were analyzed. Results Compared with patients with normal overjet,1-SN, 1-NA and MxAAH were significantly increased in excessive overjet group Ⅰ（overjet： 3-5 mm）and 1-SN, 1-NA and MxAAH were significantly increased in exeessive overjet group Ⅱ （overjet：5-7 mm）. Conclusions The protrusion and tipping of maxillary, incisor, and absence of compensatory proclination of mandibular incisor may be the factors, caused skeletal class Ⅰ excessive overjet. Increased height of anterior maxillary anterior alveolar process was the compensatory. change in skeletal class i patients with exeessive overjet.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2006年第8期486-487,共2页
Chinese Journal of Stomatology
