离体下颌骨后牙区颌骨高度的研究(英文)

An illustrative study of the height of isolated mandible in posterior molars region

目的:为下颌后牙区牙槽嵴增高术提供定量指标。方法:对89具成人离体下颌骨后牙区不同部位高度进行了测量。结果:颏孔上缘至牙槽嵴顶高度,有牙侧(13.95±2.45)mm,无牙侧(8.77±2.75)mm,平均值相差5.18mm;颏孔区下颌体高度,有牙侧(31.65±3.09)mm,无牙侧(24.67±3.88)mm,平均值相差6.98mm;下颌后牙区下颌体高度,有牙侧(29.15±2.91)mm,无牙侧(23.03±4.11)mm,平均值相差6.12mm。结论:选择颏孔和颏孔后1.0cm分别作为双尖牙区、磨牙区下颌骨高度测量的标志点,方法简单,位置较恒定。下颌后牙区颌骨垂直吸收5～7mm,可供该区牙槽嵴增高术参考。

AIM:To provide quantitative data for alveolar ridge augment of mandible in pos terior molars region. METHODS:Eighty-nine isolated adult mandibles were adopted for measuring the h eight in posterior molar region. RESULTS: The results of the study showed that the distance from the upper edge of mental foramen to the apex of alveolar ridge was (13.95±2.45) on dentulo us side and (8.77±2.75)mm on edentulous side with the average difference of 5 .18 mm. Mandible height in mental foramen region was(31.65±3.09)mm on dentulo us side and(24.67±3.88)mm on edentulous, with the average difference of 6.98 mm,comparing with the corresponding(29.15±2.91) mm ,(23.03±4.11)mm and 6 .12 mm in the posterior molars region. CONCLUSION:Mental foramen and 1.0 cm posterior to it are preferable for measur ing mandible height in cuspid and molar region because of easy performance and the invariable position. Vertical resorbence in mandible posterior molars region is of 5 to 7 mm,which provides anatomical reference for alveolar ridge augment.