Year : 2019

Volume : Volume 10

Issue : Issue 1s

Address for correspondence :
Dr. Arvind Kumar Singh.
arvindkgmu@gmail.com

Abstract

Background:  The objective of the present study was to compare and evaluate the tensile bond strengths of siliconebased soft linining materials (Ufi Gel P Voco & Elite Soft Relining,Zhermack) with different surface pre treatments of heat cure Pmma denture base acrylic resin.  Materials & Method- Stainless steel dies measuring 40mm in length; 10mm in height (40x10x10) were machined to prepare standardized for the polymethyl methacrylate resin blocks. Stainless steel dies(spacer for resilient liner) measuring 3mm thick; 10mm long and 10mm wide were prepared as spacers to ensure uniformity of the soft liner being tested. 30 specimens were prepared for Group A(ufi gel p) and 30 samples for Group B Elite Soft Relining,Zhermack). In these groups,based on pretreatment of acrylic resin specimens each group was subdivided into 3 subgroups of 10 samples each. Subgroup 1- without any surface treatment, Sub group 2-sandblasted and Sub-group 3- treated with methyl methacrylate monomer.  Result- The results were stastically analysed by Kruscal Wallis Test, Mann-Whitney U Test, and Independent T Test. The specimens treated with pmma monomer wetting showed superior and significant bond strength than those obtained by other surface treatments.  Conclusion- The samples belonging to sub group of Elite Reling Soft (Zhermack) exhibit superior tensile bond strength than sub groups of Ufi Gel P (Voco). The modes of failure of all specimens were mostly adhesive in nature.

Keywords: Silicone Soft Denture Liner, Denture Base Resin, Tensile Bond Strength.