[Bond strength and rigidity modulus of non-precious alloys].
The use of non-precious alloys in construction of metalceramic restorations has been increasing since 1979. This was the reason to study the bond strength and rigidity modulus of four selected base metal alloys developed for use with bonding porcelain. Three point loading design test was performed to evaluate the bond strength. The specimens made of Co-Cr-Mo alloys showed porcelain fracture at bond failure in a high percentage. Ni-Cr-Mo alloys showed mainly lamelar failure of the bond. The highest bond strength and rigidity modulus were found, in alloy containing titanium. It was noticed that ceramic can increase the rigidity of modulus metal by almost ten times. All studied alloys are technically very sensitive and manufacturer's instruction must be closely followed.
Trifunnović
D
D
University School of Dental Medicine, Belgrade.
Lekić
Z
Z
Todorović
A
A
D000268:Adhesiveness; D002516:Ceramics; D002858:Chromium Alloys; D003722:Dental Alloys; D001840:Dental Bonding; D008422:Materials Testing; D016876:Metal Ceramic Alloys; D009532:Nickel; D013718:Tensile Strength; D014025:Titanium
D002858:Chromium Alloys; D003722:Dental Alloys; D016876:Metal Ceramic Alloys; C040654:titanium nickelide; D009532:Nickel; D014025:Titanium
Jacina metalo-keramickog meduspoja i modul krutosti neplemenitih legura.