Year : 2015

Volume : Volume 5

Issue : Issue 2

Address for correspondence :
Dr. Sumit Singh Phukela
phukelasumit@yahoo.com

Abstract

Aim: Debonding of denture teeth from a denture base is  a routine  problem in dental practice. The present study was conducted to comparatively evaluate    shear   bond   strength of  croslinked   Denture Teeth to  denture base  Resin with mechanical modifications   Materials and Method: The test spamples central incisors {11} were divided into 4 groups. Group 1: control, whereas group 2, group 3 and group 4 were experimental groups modified with half moon   shaped groove, criscross shaped grooves and combination of half moon   shaped and crisscross  grooves respectively. The teeth were arranged with the angulation of 130 degree on wax blocks. These test specimens were prepared by DPI heat cure resin. A shear load was applied at palatal surface of central incisor (11) using Universal Testing Machine until failure occurred  Results: The lowest shear bond strength value was seen with the Group 1 specimens prepared by DPI and the highest shear bond strength value was seen with the Group 4 specimens prepared with combination of halfmoon shaped and crisscross grooves packed with DPI     Conclusion: Within the limitations of this study, it can be concluded the specimens with combination of halfmoon shaped and crisscross grooves packed with DPI showed highest shear bond strength value while the specimens without any mechanical preparation showed lowest shear bond strength value.

Keywords: Shear Bond strength, half moon   shaped groove, crisscross shaped grooves and Denture base Resin.