摘要
本实验选用30只4周龄Wistar大鼠使用自制上颌前牙平面板功能性活动矫治器打开大鼠下颌。用X线片头测量术,对实验前后大鼠的颅面形态进行测量分析。结果显示,实验组大鼠的下颌角前切迹加深,上下颌磨牙牙槽高度增加,下颌平面角增大,下颌向下后旋转;但对颅脑及上颌骨的形态及位置均无明显影响。
30 growing rats in this expetiment were studied by R. C. T,. Removable incisal bite plate were weared on each of the experiment rat in order to open their mandible for 4 weeks. Compar ing the cephalometric data of two groups rats before and after experiment. The result showed that the mandible of experiment rats rotated backward and downward with a deepened antegonial ontch and increased the mandibular plane angle, the hight of the lower and upper alveolar bone increased,but on magnificant influence to the cranium and maxillae.
出处
《临床口腔医学杂志》
1997年第1期29-31,共3页
Journal of Clinical Stomatology
基金
高等学校博士学科点专项科研基金!C1048
关键词
功能性
矫治器
X线头测量术
牙HE
Functional appliance
Open the mandible
Roentgenocephalometric onalysis