随着科学技术的进展,牙科铸造精度越来越高.铸造全冠在粘固时,由于静液压力的作用,剩余粘固剂难以溢出,造成全冠开高。为了解决这一问题,作者采用了涂膜法。经过临床观察,能有效地防止咬(牙合)开高。涂膜法是在石膏代型的牙体轴面涂上一层膜,使完成后的铸造全冠与牙面之间形成20—30微毫米的间隙,为粘固剂的缓冲间隙,以利 With the progress of science and technology, dental casting accuracy is getting higher and higher.Casting full crown in the cementing, due to the hydrostatic pressure, the remaining cement is difficult to overflow, resulting in full crown open. In order to solve this problem, the author adopted the coating method. After clinical observation, can effectively prevent bite (occlusion) open high. The coating method is to apply a layer of film on the gypsum-shaped dental axial surface so as to form a gap of 20-30 micro mm between the finished casting full crown and the tooth surface as a buffer gap for the cement,