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Ahmad, F. and Yunus, N. (2009) Shear Bond Strength of Two Chemically Different Denture Base Polymers to Reline Materials. Journal of Prosthodontics-Implant Esthetic and Reconstructive Dentistry, 18 (7). pp. 596-602. ISSN 1059-941X

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    Purpose: This study evaluated the shear bond strengths of light-polymerized urethane dimethacrylate (Eclipse) and heat-polymerized polymethylmethacrylate (Meliodent) denture base polymers to intraoral and laboratory-processed reline materials. Materials and Methods: Thirty disks measuring 15 mm diameter and 2 mm thick were prepared for each denture base material following the manufacturers' recommendation. They were relined with Meliodent RR, Kooliner, and Secure reline materials after 1 month of water immersion. Ten additional Eclipse specimens were relined using the same Eclipse resin. A shear bond test was carried out on an Instron machine at a crosshead speed of 1.0 mm/min 24 hours after relining. Data were analyzed using two-way and one-way ANOVAs and post hoc Dunnett's T3 test (p = 0.05). The nature of failure was analyzed under a stereomicroscope. The effect of dichloromethane adhesive on the two denture polymer surfaces and the failed interfaces of mixed and adhesive failures were analyzed under a SEM (scanning electron microscope). Results: Two-way ANOVA showed significant differences in the shear bond strength values as a function of the denture base polymers, reline materials, and their interaction (p < 0.05). One-way ANOVA showed significant differences in shear bond strength values among denture base-reline combinations (p < 0.05) except for Meliodent-Kooliner and Eclipse-Meliodent RR relines. Meliodent showed the highest shear bond strength value when relined with Meliodent RR (14.5 +/- 0.5 MPa), and Eclipse showed the highest value with Eclipse relining (11.4 +/- 0.6 MPa). Meliodent denture base showed adhesive, cohesive, and mixed failure, while all Eclipse showed adhesive failure with various reline materials. Conclusion: The two chemically different denture base polymers showed different shear bond strength values to corresponding reline materials.

    Item Type: Article
    Additional Information: ISI Document Delivery No.: V17CG Times Cited: 3 Cited Reference Count: 23 Cited References: Ali Isma Liza, 2008, J Prosthodont, V17, P545, DOI 10.1111/j.1532-849X.2008.00357.x ARENA CA, 1993, J PROSTHET DENT, V70, P126, DOI 10.1016/0022-3913(93)90006-A ARIMA T, 1995, J PROSTHET DENT, V73, P55, DOI 10.1016/S0022-3913(05)80273-2 Arima T, 1996, J PROSTHET DENT, V75, P457, DOI 10.1016/S0022-3913(96)90044-X Aydin AK, 1999, DENT MATER, V15, P211, DOI 10.1016/S0109-5641(99)00038-X Chai J, 2000, INT J PROSTHODONT, V13, P112 Cucci ALM, 1998, J PROSTHET DENT, V80, P434, DOI 10.1016/S0022-3913(98)70008-3 CURTIS DA, 1989, DENT MATER, V5, P314, DOI 10.1016/0109-5641(89)90122-X Grossmann Y, 2005, J PROSTHET DENT, V94, P289, DOI 10.1016/j.prodent.2005.00.014 Leles CR, 2001, J ORAL REHABIL, V28, P1153, DOI 10.1046/j.1365-2842.2001.00786.x LICHKUS AM, 2004, J DENT RES S, V83, P1386 Machado C, 2007, J DENT, V35, P930, DOI 10.1016/j.jdent.2007.09.006 MINAMI H, 2004, J PROSTHET DENT, V91, P64 Neppelenbroek Karin Hermana, 2006, J Appl Oral Sci, V14, P436 Sarac YS, 2005, J PROSTHET DENT, V94, P259, DOI 10.1016/j.prodent.2005.05.024 Smith L T, 1991, Int J Prosthodont, V4, P445 Stipho HD, 2001, J PROSTHET DENT, V86, P143, DOI 10.1067/mpr.2001.117055 Takahashi Y, 2001, INT J PROSTHODONT, V14, P271 Takahashi Y, 2001, INT J PROSTHODONT, V14, P531 Takahashi Y, 2000, INT J PROSTHODONT, V13, P59 WYATT CCL, 1986, J PROSTHET DENT, V55, P343, DOI 10.1016/0022-3913(86)90117-4 Anonymous, 2005, J PROSTHET DENT, V94, P10 *INT ORG STAND, 114052003 ISOTS Ahmad, Fauziah Yunus, Norsiah University of Malaya, Kuala Lumpur, Malaysia This study was supported by Vote F funding, University of Malaya, Kuala Lumpur, Malaysia. Wiley-blackwell Malden
    Uncontrolled Keywords: Shear bond urethane dimethacrylate methyl methacrylate reline light polymerization
    Subjects: Medicine and Dentistry
    Divisions: UNSPECIFIED
    Depositing User: Mr Ahmad Azwan Azman
    Date Deposited: 26 Sep 2012 09:05
    Last Modified: 26 Sep 2012 09:05
    URI: http://opendepot.org/id/eprint/1353

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