活动义齿加金属合垫修复深覆合的探讨何惠宇，陈士俊（第一附属医院口腔科）先天性部分牙齿缺失、牙发育异常、老年性牙齿大部分脱落而又未及时修复者及牙列病理性磨损。牙尖可磨平，牙冠变短，使咬合垂直距离较前降低，临床上称垂直距离低于正常，有对接触的咬合为低位咬... Removable Dentures plus Metal Mattress Deep Overlay He Hui Yu, Chen Shijun (First Affiliated Hospital of Stomatology) Congenital tooth loss, abnormal tooth development, most of the elderly tooth loss without timely repair and dentition pathology Wear and tear The cusp can be smooth, the crown shorter, so that the occlusal vertical distance is lower than the previous, the clinical said the vertical distance is lower than normal, there are pairs of contact bite for low bite ...