Bonding effect of adhesive resin cement to ZrO2−Al2O3 composite ceramics (3Y20A)

ZrO₂−Al₂O₃ Composite Ceramics (3Y20A) has been discussed as a reinforcing material for castable glass ceramics. It is a goal of this study to obtain stable adhesive strength of 3Y20A using adhesive resin cement. As for the experimental conditions, four types of adhesive resins and three surface treatment methods were selected, and the effect of their bonding strength was compared. As a result, the surface roughness of 3Y20A was increased and its bonding strengh was improved with a 46% hydrofluoric acid treatment and 5-atm alumina sandblasting. In addition, the use of a silane coupling agent has a tendency to improve bonding strength. After 10,000 thermal cycles, the bonding strength of Panavia 21 was more stable than that of Super Bond C & B, Imperva Dual cement, and Bistite Resin Cement.