Evaluation of bonding strength of porcelain to some commercial nickel-base dental alloys and comparing their interface

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Asghari Salavat Rahim; SAMADI AHAD

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Journal: Journal of Dental Medicine Year:2017 | Volume:30 | Issue:3 Page(s): 164-172

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Information Journal Paper

Title

Evaluation of bonding strength of porcelain to some commercial nickel-base dental alloys and comparing their interface

Author(s)

Asghari Salavat Rahim | SAMADI AHAD | Issue Writer Certificate

Keywords

Dental alloysQ1

Bonding strengthQ1

Cyclic cooking heat treatmentQ1

Porcelain-alloy interfaceQ1

BerylliumQ2

Abstract

Background and Aims: Poor adhesion between porcelain and some of the Dental alloys is one of the most challenges to select the desirable alloy in dental restorations. Therefore, the aim of this study was to evaluate the bond strength of porcelain to some of the commercial alloys. This can help in selection of desirable alloy. Materials and Methods: The shear bond strength of porcelain to the three of the most widely used nickel-base Dental alloys commercially named as: Verabond, Damcast and Noritake were evaluated according to standard ASTM E4. The results were analyzed based on the statistical method of independent t with the meaningful level of P<0. 05. Then, the bonding interface of the fired samples was evaluated using SEM equipped with EDX analyzer and X-ray diffractometry. Results: The average Bonding strength of porcelain to each of the above mentioned alloys were determined as: 27. 54± 5. 48, 22. 46± 4. 99 and 26. 18± 4. 27 MPa, respectively. Due to the existence of Be and Al in the chemical composition of Verabond and Damcast and their higher appetencies to form the different surface oxides in preference to Cr2O3, not only the bond strength of porcelain to two these alloys was increased about 20 percent (compared with the Noritake), but also the color of their porcelain was not changed. Conclusion: To replace the replacing of deleterious elements from the chemical composition of Dental alloys. The added new elements should control through the oxide layer and the formation of Cr2O3 in Porcelain-alloy interfaces for adequate bond strength.

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APA: Copy

Asghari Salavat, Rahim, & SAMADI, AHAD. (2017). Evaluation of bonding strength of porcelain to some commercial nickel-base dental alloys and comparing their interface. JOURNAL OF DENTAL MEDICINE, 30(3 ), 164-172. SID. https://sid.ir/paper/25717/en

Vancouver: Copy

Asghari Salavat Rahim, SAMADI AHAD. Evaluation of bonding strength of porcelain to some commercial nickel-base dental alloys and comparing their interface. JOURNAL OF DENTAL MEDICINE[Internet]. 2017;30(3 ):164-172. Available from: https://sid.ir/paper/25717/en

IEEE: Copy

Rahim Asghari Salavat, and AHAD SAMADI, “Evaluation of bonding strength of porcelain to some commercial nickel-base dental alloys and comparing their interface,” JOURNAL OF DENTAL MEDICINE, vol. 30, no. 3 , pp. 164–172, 2017, [Online]. Available: https://sid.ir/paper/25717/en

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