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Effect of surface treatments on the bond strength of soft denture lining materials to an acrylic resin denture base

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Date

2014

Author

Gündoğdu, Mustafa
Duymuş, Zeynep Yeşil
Alkurt, Murat

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Gundogdu, M., Duymus, Z.Y., Alkurt, M. (2014). Effect of surface treatments on the bond strength of soft denture lining materials to an acrylic resin denture base. Journal of Prosthetic Dentistry,112(4), 964-971. https://doi.org/10.1016/j.prosdent.2014.01.017

Abstract

Statement of problem. Adhesive failure between acrylic resin and resilient liner material is commonly encountered in clinical practice. Purpose. the purpose of this study was to evaluate the effect of different surface treatments on the bond strength of 2 different resilient lining materials to an acrylic resin denture base. Material and methods. Ninety-six dumbbell-shaped specimens were fabricated from heat-polymerized acrylic resin, and 3 mm of the material was cut from the thin midsection. the specimens were divided into 6 groups according to their surface treatments: no surface treatment (control group), 36% phosphoric acid etching (acid group), erbium:yttrium-aluminum-garnet (Er:YAG) laser (laser group), airborne-particle abrasion with 50-mu m Al2O3 particles (abrasion group), an acid+laser group, and an abrasion+laser group. the specimens in each group were divided into 2 subgroups according to the resilient lining material used: heat-polymerized silicone based resilient liner (Molloplast B) and autopolymerized silicone-based resilient liner (Ufi Gel P). After all of the specimens had been polymerized, they were stored in distilled water at 37 degrees C for 1 week. A tensile bond strength test was then performed. Data were analyzed with a 2-way ANOVA, and the Sidak multiple comparison test was used to identify significant differences (alpha=.05). the effects of the surface treatments and resilient lining materials on the surface of the denture base resin were examined with scanning electron microscopy. Results. the tensile bond strength was significantly different between Molloplast B and Ufi Gel P (P<.001). the specimens of the acid group had the highest tensile bond strength, whereas those of the abrasion group had the lowest tensile bond strength. the scanning electron microscopy observations showed that the application of surface treatments modified the surface of the denture base resin. Conclusions. Molloplast B exhibited significantly higher bond strength than Ufi Gel P. Altering the surface of the acrylic resin denture base with 36% phosphoric acid etching increased bond strength.

Source

Journal of Prosthetic Dentistry

Volume

112

Issue

4

URI

https://doi.org/10.1016/j.prosdent.2014.01.017
https://hdl.handle.net/11436/3052

Collections

  • DŞHF, Klinik Bilimler Bölümü Koleksiyonu [254]
  • PubMed İndeksli Yayınlar Koleksiyonu [2443]
  • Scopus İndeksli Yayınlar Koleksiyonu [6032]
  • WoS İndeksli Yayınlar Koleksiyonu [5260]



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