European Journal of Prosthodontics and Restorative Dentistry

Effect of Potassium Nitrate and Boric Acid on the Bond Strength of Veneering Ceramics to Zirconia


In this study, the effects of boric acid addition to the veneer ceramics and treatment of the ceramic cores immersed in potassium nitrate solution were evaluated to reduce the micro cracks that may occur in the internal structure of the ceramic, increase the mechanical properties and improve the chemical bonding strength of core ceramics. In the data obtained after the experiment, the average MPa values showed statistically significant differences according to the groups (p<0.001). The average value in the control group (C) was lower than the others. There was no statistically significant between the mean values of the boric acid application in the veneer ceramic ( IB ) group and zirconia core immersed in the potassium nitrate solution (IN) group. The highest mean values
were observed between the veneer ceramic and the zirconia core by application of boric acid and potassium nitrate (IBN) group. As a result potassium nitrate and boric acid application affects the bond strength between zirconia core and veneer ceramic and increases mechanical properties of ceramics.

Boric Acid
Shear Bond Strength
Dental Ceramics
Potassium Nitrate
Chipping and Delamination Ceramic


Rafat Sasany, Gozlem Ceylan, Mehmet F. Koca, Ahmet Koroglu

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