UV irradiation improves the bond strength of resin cement to fiber posts.

Bo Zhong, Yong Zhang, Jianfeng Zhou, Li Chen, Deli Li, Jianguo Tan

Journal: Dental materials journal 2011;30(4):455-60

PMID: 21778609

Free Full Text on J-STAGE, Japan Science and Technology Information Aggregator, Electronic View on PubMed

Abstract

The purpose is to evaluate the effect of UV irradiation on the bond strength between epoxy-based glass fiber posts and resin cement. Twelve epoxy-based glass fiber posts were randomly divided into three groups. Group 1 (Cont.): No surface treatment. Group 2 (Low-UV): UV irradiation was conducted from a distance of 10 cm for 10 min. Group 3 (High-UV): UV irradiation was conducted from a distance of 1 cm for 3 min. A resin cement (CLEARFIL SA LUTING) was used for the post cementation to form resin slabs which contained fiber posts in the center. Microtensile bond strengths were tested and the mean bond strengths (MPa) were 18.81 for Cont. group, 23.65 for Low-UV group, 34.75 for High-UV group. UV irradiation had a significant effect on the bond strength (p<0.05). UV irradiation demonstrates its capability to improve the bond strength between epoxy-based glass fiber posts and resin cement.

Address: Department of Prosthodontics, Peking University School and Hospital of Stomatology.

DOI: 10.4012/dmj.2010-179

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MeSH Terms: Cementation, Curing Lights, Dental, Dental Bonding, Dental Materials, Dental Stress Analysis, Epoxy Resins, Glass, Humans, Materials Testing, Polymerization, Post and Core Technique, Radiation Dosage, Resin Cements, Stress, Mechanical, Surface Properties, Tensile Strength, Time Factors, Ultraviolet Rays, Water