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Fusion of low-fusing porcelain to Ti-75 alloy: an experimental study
1Department of Prosthodontics, College and Hospital of Stomatology, Fourth Military Medical University, No. 1 KangFu Road, Xi'an, 710032, P. R. China.
Objective:
To study the stomatological feasibility of low-fusing porcelain fused to Ti-75 alloy.
Methods:
Electroprobemicroanalysis (EPMA) and shear test were used to observe interface state and bonding strength of porcelaintitanium.
Results:
Shear bond strengths of low-fusing porcelain with Ti-75 alloy and conventional porcelain each fused to metal (NC-VMK68) were 47.38 +/- 7.95 MPa and 48.50 +/- 7.60 MPa, respectively. There was no significant difference between the shear bonding strength of low-fusing porcelain with Ti-75 and that of conventional porcelain fused to metal (PFM) (P > 0.05). EPMA showed that Ti-75 alloy and low-fusing porcelain bound tightly, had no fissure, and that low-fusing porcelain had good infiltration to Ti-75. It was shown that Ti spread from Ti-75 basal body into porcelain, and elements such as Si-Sn spread from porcelain to Ti-75.
Conclusion:
Ti-75 alloy can be used stomatologically, as a porcelain alloy.
