Bond strength of three porcelains to two forms of titanium using two firing atmospheres

摘要: Abstract Statement of Problem. Problems with casting and porcelain bonding are encountered when titanium is used in metal-porcelain restorations. The oxidation characteristics the main problem. mechanisms titanium-porcelain systems complex poorly understood. Purpose. An vitro investigation was performed to evaluate 3 various firing conditions. Material Methods. This study evaluated strength commercial porcelains fired a vacuum an argon atmosphere cast noncast commercially pure titanium, using 3-point bending test according DIN 13927 SEM energy-dispersive spectrometry analysis. results were compared Ni-Cr alloy conventional that chosen as control. Results. Ni-Cr—conventional system had significantly higher bond than other ( P Conclusion. oxide layer produced on considered have potentially adverse effect bonding. It also concluded matching combination determinant for optimal Firing limited improved some groups. (J Prosthet Dent 2000;84:567-74.)