Open Access, Peer-reviewed, Quarterly
pISSN 0301-2875
eISSN 2005-3789
    J Korean Acad Prosthodont. 2017 Oct;55(4):389-393. Korean.
    Published online Oct 26, 2017.
    https://doi.org/10.4047/jkap.2017.55.4.389
    © 2017 The Korean Academy of Prosthodontics
    Original Article

    Flexibility of resin splint systems for traumatized teeth

    Jin-Hong Park, Joo-Hee Shin, Jae-Jun Ryu, Jeong-Yol Lee, and Sang Wan Shin
      • Institute for Clinical Dental Research, Korea University Medical Center, Korea University, Seoul, Korea.
    • Corresponding Author: Jeong-Yol Lee. Department of Prosthodontics, Institute for Clinical Dental Research, Korea University Medical Center, Korea University, 148 Gurodong-ro, Guro-gu, Seoul 08308, Republic of Korea. +82 (0)2 2626 1922: Email: wddc@korea.ac.kr
    Received June 07, 2017; Revised August 17, 2017; Accepted October 13, 2017.

    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 aim of this study is to evaluate the flexural strength of flexible resins and the flexibility of different resin splint (RS) systems in comparison with resin wire splint (RWS) system.

    Materials and methods

    Three different resin materials (G-aenial flo, GA, GC; Superbond, SB, Sun medical; G-fix, GF, GC) were tested flexural strength test in accordance with ISO-4049:2000. For the flexibility test of splint systems, a artificial model with resin teeth was used to evaluate three types of resin splint systems (GA, SB, and GF) and one resin wire splint system. The left central incisor was simulated ‘injured teeth’ with third degree mobility. Three consecutively repeated measurements of periotest value were taken in horizontal direction, before and after splinting to access tooth mobility. The splinting effect was calculated through the periotest value. Differences were evaluated through One-way Anova and Tukey HDS post-hoc tests for pair-wise comparison (α= .05).

    Results

    Although GA group showed significant higher flexural strength than SB and GF groups, all of three different resin splint systems produced a significantly higher and rigid splinting effect compared with 016" resin-wire splint system (P < .05).

    Conclusion

    Within the limits of an in vitro study, it can be stated that resin splint systems are too rigid and may not be acceptable to treat tooth avulsion.

    Keywords
    Tooth avulsion; Splint; Physiological mobility; Flexibility

    Figures

    Fig. 1
    Three point bending test.

    Fig. 2
    Experimental model of splinting effect test.

    Fig. 3
    Mean flexural strength (MPa) of the resins.

    Fig. 4
    Mean splinting effect (%) of splinting systems.

    Tables

    Table 1
    Materials used in this study

    Table 2
    Test groups and number of specimens for splinting effect test

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    MeSH Terms
    In Vitro Techniques
    Incisor
    Pliability*
    Solar System
    Splints*
    Tooth Avulsion
    Tooth Mobility
    Tooth*
    Metrics
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    Figures
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