Open AccessEvaluating bond strength of acrylic teeth to conventional and high impact denture base resin incorporating various groove designs
Author(s) -
Shireen R Kumar,
Sanjeev Mittal,
Sandeep Kalra,
Vishwas Kharsan,
Gazal Soni,
Dhruv Garg
Publication year - 2022
Publication title -
international journal of health sciences (ijhs) (en línea)
Language(s) - English
Resource type - Journals
eISSN - 2550-6978
pISSN - 2550-696X
DOI - 10.53730/ijhs.v6ns2.5641
Subject(s) - groove (engineering) , acrylic resin , materials science , universal testing machine , bond strength , dentistry , composite material , anterior teeth , post hoc , ridge , orthodontics , ultimate tensile strength , medicine , layer (electronics) , geology , metallurgy , adhesive , coating , paleontology
Purpose: In spite of chemical union between acrylic resin teeth and acrylic denture base material, detachment of teeth particularly anterior teeth is a frequent observation. The purpose of this study was to evaluate shear bond strength between denture base resin and acrylic resin denture teeth after incorporating various grooves on the ridge lap area. Materials & Methods: A total of 60 samples were prepared and divided into two groups with 30 samples each. Sample in group I were processed with conventional resin whereas in group II with high impact resin. The teeth in each group were subjected to no treatment, vertical groove & Horizontal retentive goove placement on the ridge lap area. In each group unmodified teeth served as control. A shear force was applied at an angle of 130 degrees to the lingual surface of teeth using instron universal testing machine until fracture occurred. Data obtained was statistically analysed using Post hoc and Mann-Whitney Test. Results: Unmodified resin teeth showed the least bond strength. Modification of teeth with vertical and horizontal groove significantly improves the bond strength with denture resin. A significantly greater force was required to fracture teeth from high impact resin and with vertical groove.