In vitro evaluation of the bond strength between various ceramics and cobalt-chromium alloy fabricated by selective laser sintering

The Journal of Advanced Prosthodontics
Eun-Jeong BaeJi-Hwan Kim

Abstract

This study aimed to present the clinical applicability of restorations fabricated by a new method, by comparing the bond strength of between ceramic powder with different coefficient of thermal expansion and alloys fabricated by Selective laser sintering (SLS). Fifty Co-Cr alloy specimens (25.0 × 3.0 × 0.5 mm) were prepared by SLS and fired with the ceramic (8.0 × 3.0 × 0.5 mm) (ISO 9693:1999). For comparison, ceramics with different coefficient of thermal expansion were used. The bond strength was measured by three-point bending testing and surfaces were observed with FE-SEM. Results were analyzed with a one-way ANOVA (α=.05). The mean values of Duceram Kiss (61.18 ± 6.86 MPa), Vita VM13 (60.30 ± 7.14 MPa), Ceramco 3 (58.87 ± 5.33 MPa), Noritake EX-3 (55.86 ± 7.53 MPa), and Vintage MP (55.15 ± 7.53 MPa) were found. No significant difference was observed between the bond strengths of the various metal-ceramics. The surfaces of the specimens possessed minute gaps between the additive manufactured layers. All the five powders have bond strengths higher than the required 25 MPa minimum (ISO 9693); therefore, various powders can be applied to metal structures fabricated by SLS.

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Sep 2, 2014·The Journal of Advanced Prosthodontics·Eun-Jeong BaeHae-Young Kim

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Citations

Apr 5, 2016·Dental Materials Journal·Yoshiki Ishida, Taira Miyasaka
May 20, 2016·Pharmaceutical Research·Mohamed A AlhnanBasel Arafat
Aug 2, 2016·Expert Review of Medical Devices·Xiaojun ChenConstantinus Politis
Oct 14, 2017·Photomedicine and Laser Surgery·Perihan Oyar
Mar 6, 2018·The Journal of Advanced Prosthodontics·Konstantinos DimitriadisTriantafillos Papadopoulos

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