Objective To investigate the influence of the thickness of opaque-dentine porcelain on the composite color of opaque dentine and infiltrated alumina substrates complex.

Factors which influence the color of all-ceramic restoration;

Clinical evaluation of In-ceram's all-ceramic restorations

All-ceramic restoration meets the requirements of clinical esthetics and represents the main tendency for metal-free restorations,which consists of one of the key progresses on science and technology during nine-five period chosen by Chinese Stomatology Association in 2000.