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. 2015 Sep;16(3 Suppl):230-6.

Evaluation of Bond Strength of Pressed and Layered Veneering Ceramics to Nickel-Chromium Alloy

Mitra Farzin  1 , Amir Alireza Khaledi  2 , Behnam Malekpour  3 , Mohammad Hassan Naseri  4
Affiliations

Evaluation of Bond Strength of Pressed and Layered Veneering Ceramics to Nickel-Chromium Alloy

Mitra Farzin et al. J Dent (Shiraz). 2015 Sep.

Abstract

Statement of the problem: The success of metal- ceramic- restorations (MCR) depends on the presence of strong bond between porcelain and metal substructure.

Purpose: The purpose of this study was to evaluate the effect of hot pressing technique on the bond strength of a metal-porcelain composite in comparison to layering technique.

Materials and method: Thirty Nickel-Chromium specimens were produced by two methods; conventional porcelain layering on metal and hot pressing (n=15). Bond strengths of all specimens were assessed by the means of three-point bending test according to ISO 9693: 1999 (E) instructions. The data were analyzed using Students t-test (p< 0.001).

Results: The mean ± SD bond strength of conventional and hot pressing technique was 48.29 ± 6.02 and 56.52 ± 4.97, respectively. Therefore, the conventional layering technique yielded significantly lower mean bond strength values than hot pressing technique (p< 0.001).

Conclusion: This study showed that it is possible to improve metal-porcelain bond strength significantly by applying an overpressure during porcelain firing.

Keywords: Bond; Layering porcelain; Metal; Pressable porcelain.

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Figures

Figure 1
Figure 1
Final shape and dimensions of the Ceramic-Alloy specimen
Figure 2
Figure 2
Diagram to determine the coefficient K as a function of metal substrate thickness dm and young's modulus EM of the metallic materiel.
See this image and copyright information in PMC

References

    1. De Backer H, Van Maele G, De Moor N, Van den Berghe L. Long-term results of short-span versus long-span fixed dental prostheses: an up to 20-year retrospective study. Int J Prosthodont. 2008; 21: 75–85. - PubMed
    1. Walton TR. An up to 15-year longitudinal study of 515 metal-ceramic FPDs: Part 1. Outcome. Int J Prosthodont. 2002; 15: 439–445. - PubMed
    1. Joias RM, Tango RN, Junho de Araujo JE, Junho de Araujo MA, Ferreira Anzaloni Saavedra Gde S, Paes-Junior TJ, et al. Shear bond strength of a ceramic to Co-Cr alloys. J Prosthet Dent. 2008; 99: 54–59. - PubMed
    1. Fischer J, Zbären C, Stawarczyk B, Hämmerle CH. The effect of thermal cycling on metal-ceramic bond strength. J Dent. 2009; 37: 549–553. - PubMed
    1. Bagby M, Marshall SJ, Marshall GW Jr. Metal ceramic compatibility: a review of the literature. J Prosthet Dent. 1990; 63: 21–25. - PubMed

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