SHEAR BOND STRENGTH OF A RESIN CEMENT TO DIFFERENT ALLOYS SUBJECTED TO VARIOUS SURFACE TREATMENTS

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EZOJI FARIBA; TABARI KASRA; JABERI ANSARI ZAHRA; TORABZADEH HASSAN; KHARRAZIFARD MOHAMMAD JAVAD

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Journal: Frontiers in Dentistry Year:2016 | Volume:13 | Issue:1 Page(s): 29-39

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Title

SHEAR BOND STRENGTH OF A RESIN CEMENT TO DIFFERENT ALLOYS SUBJECTED TO VARIOUS SURFACE TREATMENTS

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Keywords

ALLOY PRIMER

SHEAR STRENGTH

RESIN CEMENTS

Abstract

Objectives: Micromechanical retention of RESIN CEMENTS to alloys is an important factor affecting the longevity of metal base restorations. This study aimed to compare the bond strength and etching pattern of a newly introduced experimental etchant gel namely Nano Met Etch with those of conventional surface treatment techniques for nickel-chrome (Ni-Cr) and high noble alloys.Materials and Methods: A total of 120 discs (8×10×15 mm) were cast with Ni-Cr (n=20), high noble BegoStar (n=50) and gold coin alloys (n=50). Their Surfaces were ground with abrasive papers. Ni-Cr specimens received sandblasting and etching. High noble alloy specimens (BegoStar and gold coin) received sandblasting, sandblasting-ALLOY PRIMER, etching, etch-ALLOY PRIMER and ALLOY PRIMER alone. Cylindrical specimens of Panavia were bonded to surfaces using Tygon tubes. Specimens were subjected to micro-shear bond strength testing after storing at 37°C for 24 hours.Results: In gold coin group, the highest bond strength was achieved after sandblasting (25.82±1.37MPa, P<0.001) and etching+ALLOY PRIMER (26.60 ± 5.47 MPa, P<0.01). The lowest bond strength belonged to sandblasting+ALLOY PRIMER (17.79±2.96MPa, P<0.01). In BegoStar group, the highest bond strength was obtained in the sandblasted group (38.40±3.29MPa, P<0.001) while the lowest bond strength was detected in the sandblast+ALLOY PRIMER group (15.38±2.92MPa, P<0.001). For the Ni-Cr alloy, bond strength in the etched group (20.79±2.01MPa) was higher than that in the sandblasted group (18.25±1.82MPa) (P<0.01).Conclusions: For the Ni-Cr alloy, etching was more efficient than sandblasting but for the high noble alloys, higher Au content increased the efficacy of etching.

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APA: Copy

EZOJI, FARIBA, TABARI, KASRA, JABERI ANSARI, ZAHRA, TORABZADEH, HASSAN, & KHARRAZIFARD, MOHAMMAD JAVAD. (2016). SHEAR BOND STRENGTH OF A RESIN CEMENT TO DIFFERENT ALLOYS SUBJECTED TO VARIOUS SURFACE TREATMENTS. FRONTIERS IN DENTISTRY (JOURNAL OF DENTISTRY OF TEHRAN UNIVERSITY OF MEDICAL SCIENCES), 13(1), 29-39. SID. https://sid.ir/paper/297957/en

Vancouver: Copy

EZOJI FARIBA, TABARI KASRA, JABERI ANSARI ZAHRA, TORABZADEH HASSAN, KHARRAZIFARD MOHAMMAD JAVAD. SHEAR BOND STRENGTH OF A RESIN CEMENT TO DIFFERENT ALLOYS SUBJECTED TO VARIOUS SURFACE TREATMENTS. FRONTIERS IN DENTISTRY (JOURNAL OF DENTISTRY OF TEHRAN UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2016;13(1):29-39. Available from: https://sid.ir/paper/297957/en

IEEE: Copy

FARIBA EZOJI, KASRA TABARI, ZAHRA JABERI ANSARI, HASSAN TORABZADEH, and MOHAMMAD JAVAD KHARRAZIFARD, “SHEAR BOND STRENGTH OF A RESIN CEMENT TO DIFFERENT ALLOYS SUBJECTED TO VARIOUS SURFACE TREATMENTS,” FRONTIERS IN DENTISTRY (JOURNAL OF DENTISTRY OF TEHRAN UNIVERSITY OF MEDICAL SCIENCES), vol. 13, no. 1, pp. 29–39, 2016, [Online]. Available: https://sid.ir/paper/297957/en

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