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Abstract
The effect of two denture cleansers (Polident® and Protefix®) on the tensile bond strength between four soft liner materials (Molloplast B®, Permaflex®, Sofreliner Tough Medium®, and GC Reline Soft®) and a conventional denture base resin was investigated. For each of the liner materials 35 test specimens were prepared according to test the requirements and assigned into seven groups (n = 5). Before tensile testing, five of the liner specimens were kept in water or soaked in two cleansing solutions during 2 and 7 d. Five other samples served as a control group subjected directly to tensile testing. The bond strength values were obtained using a universal testing machine and compared statistically. 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 Molloplast and Permaflex specimens, adhesive for Sofreliner Tough Medium, and a mixed type of failure was observed for GC Reline Soft material.
ACKNOWLEDGMENTS
Special thanks to Associate Professor Ali Fazil Yenidunya, Research Centre for Medical School of Cumhuriyet University, for his invaluable contribution in preparing this manuscript for submission.
Notes
∗According to manufacturers' data.
n = 5 for each condition tested.
∗All values are not statistically different from each other according to multifactorial analysis of variance (p > 0.05).
n = 5 for each condition tested.
∗Approximately total percentage was given.