Abstract: Objective To evaluate the clinical effect of posterior teeth occlusion veneer with lithium disilicate ceramic. Methods 12 cases, 160 severely worn premolars and molars were reconstructed with occlusion veneer with lithium disilicate ceramic. After 3 years of observation, according to the revised standards of public health service in the United States, the color matching, edge coloring, fracture of restorations, secondary caries and marginal fitness of the prostheses were evaluated. Results 95.62% of the colors of the occlusion veneer in the posterior teeth were Class A. 93.75% of the prosthesis had no edge coloring. 98.13% of the restorations were intact. No secondary caries were found in all the prostheses. 92.5% of the prosthesis edge fitness was Class A. Conclusion The posterior teeth occlusion veneer with lithium disilicate ceramic has good clinical effects recently.

Key words: occlusion veneer, Severe Attrition, lithium disilicate glass-ceramic