Initial Stree Analysis of a Cuspid and an Endosseous Implant Anchorage in Orthodontic Treatment 种植体支抗和尖牙在正畸矫治过程中的初始应力分析
Conclusion: Predicting the tooth size of cuspid and bicuspid group in malocclusion can't simply follow the law of normal occlusion. 结论:临床上对错尖牙、双尖牙组的预测不能简单等同于正常。
Methods: A3-D FEM model of lower cuspid was established by using DICOMdata and stimulant mechanical experiment was carried out on the model. 方法:利用DICOM数据建模法,建立下尖牙的三维有限元模型,模拟力学实验。
Objective: To study the tooth size correlation between permanent cuspid and bicuspid group and other teeth groups in malocclusion. 目的:研究错牙合、正常牙合的尖牙、双尖牙组与其它组牙的相关性,为尖牙、双尖牙组的预测提供科学依据。
Method Nine class ⅱ malocclusion cases were treated with the straight wire appliance, using high pull headgear J hook in the stage of cuspid retraction and space closure. 方法:应用直丝弓矫治器治疗安氏Ⅱ1错牙合患者9例,结合使用J钩头帽口外牵引向后滑动弓丝关闭拔牙间隙,并适当应用于拉尖牙向远中的阶段。
Impacted tooth frequently appears in upper cuspid and upper central incisors ( except of the third molar). 较常见的是尖牙和上颌切牙的埋伏阻生(第三磨牙除外)。
After treatment the changes of dental arch width in first and second premolar region were larger than that of cuspid and first molar regions. 上颌第一、第二双尖牙间各自宽度较尖牙间、第一磨牙间宽度增加显著。
Central incisor was 9 cases. Lateral incisor was 1 case. Cuspid tooth was 6 cases. 中切牙9例,侧切牙1例,尖牙6例。
Among all the teeth, the failure rate of bonded brackets of the second premolar was the largest, and which of the cuspid teeth was the lowest. 所有牙齿中,第二前磨牙最高,尖牙最低。
Clinical Study in Low Modulus Archwire For Lower Impacted Cuspid 低模量辅弓丝纠正低位阻生尖牙的临床研究