International Journal of Medical and Health Research

International Journal of Medical and Health Research


International Journal of Medical and Health Research
International Journal of Medical and Health Research
Vol. 6, Issue 11 (2020)

The effect of Er: YAG laser surface treatment to acrylic resin denture base on the peel bond strength of silicone-based resilient liner


Al-Shakaki Hala, Al-Essa Hussein

Statement of problem: Adhesive failure between the liner and the denture base creates an environment for potential bacterial growth and accelerated breakdown of the soft liner resulting in a deteriorating prosthesis. Purpose This study evaluated the effect of lased preparation on the interracial bonding of polymethyl methacrylate and auto polymerization silicon-based soft lining material. Materials and Methods: Ten complete mandibular dentures were selected to be relining, half of the denture was laser Er: YAG treated and the other half untreated (control). Then the silicone-based soft liner material (Ufi-Gel P) was applied. The peel bond strength test was examined by Instron Universal Testing Machine at crosshead speed of 30mm/min. T-student test was used to analyze the data (α=0.05). Results: Altering the polymethyl methacrylate surface by laser Er:YAG significantly increased the peel strengths for the silicone lining material with the denture base in compere with the controls(P<0.05). Conclusions: Results of this study imply that mechanical surface preparation (laser irradiation) of denture bases before application of a resilient liner shows higher peel bond strength.
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