SPUTTERED OXIDE FOR DENTAL CERAMIC-METAL BOND

拟议研究项目的目的是调查 使用一种新的、梯度组成的溅射氧化膜， 改善了陶瓷中金属与陶瓷的结合， 熔化的金属牙科设备。 本发明的方法利用 通过扩散和累积形成的离散氧化物层 氧化物形成元素从金属铸件的主体到 瓷界面 这里提出的替代技术 包括磁控溅射沉积具有 梯度氧组合物应具有上级结合， 陶瓷和金属部件。 梯度将是 通过在溅射期间缓慢改变气体成分来实现 从氩到氧 这将导致一个平滑的合成 并且可以提供不期望的残留物的减少 在某些陶瓷-金属界面处出现的拉伸应力， 热收缩系数的差异。 使用 这一过程可以显着改善陶瓷金属 结合强度，特别是与贱金属铸造合金的结合强度，并且它 技术敏感度应低于目前牙科实验室 程序.

The objective of the proposed research project is to investigate the use of a novel, gradient composition, sputtered oxide film for improving the bonding between metal and ceramic in porcelain- fused-to-metal dental restorations. The present process utilizes a discrete oxide layer formed by diffusion and an accumulation of oxide-forming elements from the bulk of the metal casting to the porcelain interface. The alternate technique proposed here involves the magnetron sputter deposition of a layer with a gradient oxygen composition that should have superior bonding to both the ceramic and metal components. The gradient will be achieved by slowly varying the gas composition during sputtering from argon to oxygen. This will result in a smooth compositional transition and may provide a reduction in the undesirable residual tensile stresses occurring at some porcelain-metal interfaces due to the difference in the thermal contraction coefficients. The use of this procedure may significantly improve the porcelain-metal bond strength, particularly with base metal casting alloys, and it should be less technique-sensitive than current dental laboratory procedures.