Effect of activation modes on the compressive strength, diametral tensile strength and microhardness of dual-cured self-adhesive resin cements

Ah-Rang KIM; Yong-Chan JEON; Chang-Mo JEONG; Mi-Jung YUN; Jae Won CHOI; Yong Hoon KWON; Jung-Bo HUH

doi:10.4012/dmj.2015-056

Original Paper

Effect of activation modes on the compressive strength, diametral tensile strength and microhardness of dual-cured self-adhesive resin cements

Ah-Rang KIM, Yong-Chan JEON, Chang-Mo JEONG, Mi-Jung YUN, Jae Won CHOI, Yong Hoon KWON, Jung-Bo HUH

Author information

Ah-Rang KIM
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University
Yong-Chan JEON
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University
Chang-Mo JEONG
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University
Mi-Jung YUN
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University
Jae Won CHOI
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University
Yong Hoon KWON
Department of Dental Materials, School of Dentistry, Pusan National University
Jung-Bo HUH
Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University

Keywords: Compressive strength, Diametral tensile strength, Microhardness, Vickers hardness, Self-adhesive resin cement

JOURNAL FREE ACCESS

2016 Volume 35 Issue 2 Pages 298-308

DOI https://doi.org/10.4012/dmj.2015-056

Details

Abstract

The purpose of this study was to compare the compressive strength, diametral tensile strength and microhardnss of several selfadhesive resin cements (Rely-X U200, Clearfill SA Luting, G-CEM LinkAce, Maxcem Elite, PermaCem 2.0, and Zirconite) using different activation modes (self-cured, light-cured) and testing time (immediately, 24 h, thermocycling). Specimens were prepared for the compressive strength (Ø 4×6 mm) and diametral tensile strength and microhardness (Ø 6×3 mm) according to ISO standards. The strength after 24 h was higher than immediately after. In addition, G-CEM showed the highest values. In terms of the activation modes, Rely-X U200, PermaCem 2.0 had higher values in the light-curing than the self-curing. In conclusion, all cements demonstrated clinically available strength values and revealed differences in strength according to their composition, testing time and activation mode. Furthermore, correlation was found between the microhardness (degree of conversion) and mechanical strengths of the cements tested.

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