Open Access, Peer-reviewed, Quarterly
pISSN 0301-2875
eISSN 2005-3789
    J Korean Acad Prosthodont. 2013 Jan;51(1):20-26. Korean.
    Published online Jan 31, 2013.
    https://doi.org/10.4047/jkap.2013.51.1.20
    Copyright © 2013 The Korean Academy of Prosthodontics
    Original Article

    Shear bond strength of the three different kinds of resin cement on CAD/CAM ceramic inlay

    Chul-Woo Baek, DDS, MSD,1,† Cheol-Woo Park, DDS, MSD,1,† Jun-Sub Park, DDS, MSD, PhD,2 and Jae-Jun Ryu, DDS, MSD, PhD1
      • 1Department of Esthetic Restorative Dentistry, Graduate School of Clinical Dentistry, Korea University, Seoul, Korea.
      • 2Goodwill Dental Hospital, Pusan, Korea.
    • Corresponding Author: Jae-Jun Ryu. Korea University Ansan Hospital, Gojan 1-dong, Danwon-gu, Ansan, Gyeonggi-do, 425-707, Korea. +82 31 412 5370: Email: koprosth@unitel.co.kr

      †These authors contributed equally to this work.
    Received October 10, 2012; Revised December 08, 2012; Accepted January 05, 2013.

    This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

    Abstract

    Purpose

    The purpose of this study was to evaluate the bond strengths between the latest CAD/CAM ceramic inlay and various resin cements which are used primarily for esthetic restoration.

    Materials and methods

    Cylindrical ceramic blocks(Height: 5 mm, diameter: 3 mm) were fabricated by using Cerec3 and bonded on the dentin of the ninety extracted caries-free molars using three different kinds of resin cement(Unicem®, Biscem®, and Variolink II®) according to the manufacturer's instructions. Ninety specimens were divided into 3 groups according to three different kinds of resin cement. Half of each group were conducted thermocycling under the conditions of the 5 - 55℃, 5,000 cycle but the other half of them weren't. All specimens were kept in normal saline 37℃, for 24 hours before measuring the bond strength. The shear bond strength was measured by Universal testing machine with a cross head speed of 0.5 mm/min. The results were analyzed statistically by t-test and one-way ANOVA.

    Results

    Unicem® group showed the highest shear bond strength despite a slight decline by thermocycling. The shear bond strength of Unicem® group and ValiolinkII® group were significantly influenced by thermocycling, whereas Biscem® group was not influenced (P<.05). There were no significant differences in the bond strength between the three groups without thermocycling, but there was significant differences between Unicem® group and Valiolink II® group with thermocycling(P<.05).

    Conclusion

    It has been shown to be clinically effective when the self-adhesive resin cements Unicem® and Biscem® were used instead of the etch-and-rinse resin cement Valiolink II® during the bonding of CAD/CAM ceramic inlay restorations with teeth.

    Keywords
    Resin cement; Cerec3; Ceramic inlay; Shear bond strength; Thermocycling

    Figures

    Fig. 1
    Cementation of ceramic and prepared specimen.

    Fig. 2
    Shear bond test in universal testing machine.

    Fig. 3
    Shear bond strength values of all groups with/without thermocycling.

    Tables

    Table 1
    Composition of resin cements used in this study

    Table 2
    Mean and Standard variation of the shear bond strength (MPa) of all groups with/without thermocycling (Mean ± SD)

    Table 3
    T-test of Unicem®, Biscem®, and Variolink II® with/without thermocycling

    Table 4
    One-way ANOVA for shear bond strength without thermocycling

    Table 5
    One-way ANOVA for shear bond strength with thermocycling

    Table 6
    Result of Tukey multiple comparisons for shear bond strength with thermocycling

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    MeSH Terms
    Ceramics
    Collodion
    Dentin
    Head
    Inlays
    Molar
    Resin Cements
    Tooth
    Metrics
    Share
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    Tables
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