The effect of surface treatments on the bond strength of a nonprecious alloy-ceramic interface: an invitro study.
The purpose of this study was to compare the effect of seven different alloy surface treatments on the bond strength of the porcelain-metal interface. Three layers of opaque porcelain and a measured thickness of dentin porcelain were applied to nickel-chromium alloy, A tensile bond strength test was used. The alloy surface treatment that exhibited the highest bond strength was sandblast + surface grinding + sandblast + de-gas, whereas the alloy surface treatment that exhibited the lowest bond strength was sandblast + surface grinding + sandblast + steam cleaning + de-gas. There was a significant difference between the two methods (P < 0.05). It was concluded that de-gassing the alloy prior to porcelain application increased the bond strength and excess surface grinding of the alloy reduced bond strength; steam cleaning the alloy surface prior to de-gassing and porcelain application also significantly reduced the bond strength.
Department of Prosthodontics, KD Dental College and Hospital, Mathura, UP India.
Manesh
M
Lahori
Department of Prosthodontics, KD Dental College and Hospital, Mathura, UP India.
Rahul
R
Nagrath
Department of Prosthodontics, KD Dental College and Hospital, Mathura, UP India.
Siddharth
S
Sisodia
Department of Prosthodontics, KD Dental College and Hospital, Mathura, UP India.
Preety
P
Dagar
Bond strength; Metal ceramic interface; Sand blasting; Surface treatment