The effect of surface treatment on tensile bond strength between soft liner and acrylic denture base and the effect of Pepsi solution on this bond with and without surface treatment

M. Saied, Hussam; F. Abdul-Hadi, Noor; W. Abdul-Razaq, Rola

	The effect of surface treatment on tensile bond strength between soft liner and acrylic denture base and the effect of Pepsi solution on this bond with and without surface treatment
Journal of baghdad college of dentistry
Article 1, Volume 23, Issue 2, 2011, Pages 17-21
Authors
Hussam M. Saied; Noor F. Abdul-Hadi; Rola W. Abdul-Razaq
Abstract
ABSTRACTBackground: One of the major serious problems with the soft denture liners is adhesion failure between the soft linermaterial and denture base. Bond failures create a potential surface for bacterial growth, plaque accumulation, andcalculus formation. The purpose of this study was to examine the effect of surface treatment of acrylic denture basematerial (sandblast, retentive grooves) on the tensile bond strength between soft liner and acrylic denture base andto investigate the effect of Pepsi solution on tensile bond strength with and without surface treatment of the acrylicdenture base material.Materials and methods: Sixty heat cure acrylic resin specimens consisting of two blocks measuring (101030mm)were prepared and divided into 3 major groups. Group (P) had no surface treatment group( S) the acrylic surfacewere treated with sandblast group(G) the acrylic surface were treated with retentive grooves. Each group contains20 specimens, 10 specimens stored in distilled water and 10 stored in Pepsi for 24 hours before testing. After acrylicspecimens were prepared and treated Vertex base soft liner was applied in the space between the two blocks ofacrylic. A micro computer controlled electronic universal testing machine was used to measure the tensile bondstrength after storage in distilled water and Pepsi for 24 hours.Results: the results revealed that there was no significant difference in tensile bond strength mean values for all testspecimens (Polished,Sandblasted,Grooved)stored in water while there was highly significant difference in tensilebond strength mean values for the test specimens stored in Pepsi. In addition there was a highly significant differencein tensile bond strength values between the tested specimens which stored in water when compared with thosewhich stored in Pepsi.Conclusion: surface treatment by sandblasting and retentive grooves had no effect on tensile bond strengthbetween soft liner and acrylic denture base for the specimens stored in water while for the specimens stored in Pepsithe tensile bond strength had decreased for the sandblasted and grooved specimens.Key words: surface treatment, tensile bond strength, sandblast, retentive grooves, soft liner, acrylic- resin. (J Bagh CollDentistry 2011;23(2):17-21).

Statistics Article View: 34 PDF Download: 10