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Evaluating the shear bond strength of “SR Nexco Paste” versus “IPS Inline” for veneering metal substructure : An in vitro study

Thesis

Last updated: 06 Feb 2023

Subjects

-

Tags

Fixed Prosthodontics

Authors

El-Shabrawi, Mussttafa Mahmoud Saleh

Accessioned

2018-08-26 05:26:04

Available

2018-08-26 05:26:04

type

M.Sc. Thesis

Abstract

Purpose: This In-Vitro study compared the shear bond strength between indirect composite and porcelain for veneering a metal substructure. Materials and Methods: twenty-four disks cast in nickel chromium alloy were divided equally into two groups and received different treatments for veneering: Indirect Composite (SR Nexco Paste) was applied on one group of specimens; the control group was veneered using porcelain (IPS Inline). The specimens were tested by a circular interface shear test after 2,500 thermocycles between 5ºC and 55ºC water baths with a dwell time of 20 seconds. The fractured specimens were evaluated to determine the mode of failure by a scanning electron microscope. Results: The mean shear bond strength values (in MPa) after thermocycling was 10.06 for the indirect composite group and 34.94 for the porcelain group. The metal-ceramic group exhibited significantly higher bond strength than the indirect composite group. Conclusion: SR Nexco can be considered as a reliable material for veneering a metal substructure according to ISO 1477 and Matsumura.

Issued

1 Jan 2015

DOI

http://dx.doi.org/10.21473/iknito-space/39421

Details

Type

Thesis

Created At

28 Jan 2023