Investigation of the effect of two different denture cleansers on the bond strength of soft liners

Abstract

This study aim to investigate the effect of denture cleansers and standblasting on tensile bond strength of soft denture liners after 3 and 6 mounths of immersion.For each of the liner materials, 70 test specimens were prepared according to test the requirements. Half of the 70 test specimens were sandblasted with 50 μm Al2O3 at 2 bar for 10 s. The resilient liner specimens were processed between 2 polymethyl methacrylate (PMMA) blocks. Before tensile testing, five of the liner specimens were kept in water or soaked in two cleansing solutions during 3 and 6 month. Bonding strength of the liners to PMMA was compared by tensile test with the use of universal testing machine at a crosshead speed of 50 mm/min. The mean value and standard deviation of the specimens were made by using a multifactorial analysis of variance (α=0.05). The type of failure was assessed visually.No significant difference was found between the groups for the tested conditions used (p>0.05). The most frequent failure mode was cohesive for Permaflex (P) specimens, adhesive for sandblasting groups, and a mixed type of failure was observed for GC Reline Soft (GC) material.The denture base cleaners affect the bond strength of PMMA/resilient liner. Permaflex and GC Reline Soft as resilient liners were found to have adequate adhesive values for clinical use.

Evaluating the Antifungal Efficacy of Incorporating KappaCarrageenan Powder Into “Heat-Cured, Acrylic-Based Soft Denture Lining Material

“…Denture resilient lining materials that are applied over the intaglio surface of the denture to work as a cushion to absorb the stress generated by occlusal forces and to decrease continuous trauma on the denturebearing area, making wearing the denture more tolerable to the patients (1) .…”