Abstract:

BACKGROUND: Porcelain-fused-to-metal restoration is aesthetic, good organization compatibility and high strength, which is favored with the majority of patients.
OBJECTIVE: To review the results of the improvement of the bond strength of porcelain-fused-to-metal with different surface treatment technologies in recently years.
METHODS: A compute-based online retrieval of CNKI and OVID databases was performed for articles concerning the improvement of the bond strength of porcelain-fused-to-metal. The key words were “bond strength of porcelain, PFM, surface treatment technology, preoxidation, sol-gel, plasma-spray” in English, and “porcelain, PFM, surface treatment, preoxidation, sol-gel, plasma-spray” in Chinese.
RESULTS AND CONCLUSION: The bond strength of porcelain-fused-to-metal is a key factor of successful application for restoration. Suitable use of surface treatment technology can improve the bond strength of porcelain-fused-to-metal, which could have a better repairing effect, such as: preoxidation, crytreat, sputtering Au intemadiate technology, plasma spraying technology, sol-gel technology, nano-medium material and vacuum deposition technology. These surface treatment technologies have improved the bond strength of porcelain-fused-to-metal at different degrees, but some technologies are still in the development and need to be further researched.