title: Effect of activation modes on the compressive strength, diametral tensile strength and microhardness of dual-cured self-adhesive resin cements.
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.
authors.affiliation: Department of Prosthodontics, Dental Research Institute, Institute of Translation Dental Science, School of Dentistry, Pusan National University.
authors.forename: Ah-Rang
authors.initials: AR
authors.lastname: Kim
authors.forename: Yong-Chan
authors.initials: YC
authors.lastname: Jeon
authors.forename: Chang-Mo
authors.initials: CM
authors.lastname: Jeong
authors.forename: Mi-Jung
authors.initials: MJ
authors.lastname: Yun
authors.forename: Jae Won
authors.initials: JW
authors.lastname: Choi
authors.forename: Yong Hoon
authors.initials: YH
authors.lastname: Kwon
authors.forename: Jung-Bo
authors.initials: JB
authors.lastname: Huh
mesh_terms: D000269:Adhesives; D019245:Compressive Strength; D055117:Curing Lights, Dental; D008422:Materials Testing; D019279:Resin Cements; D013718:Tensile Strength
chemical_list: D000269:Adhesives; D019279:Resin Cements