Evaluation the Vickers Hardness of Denture Base Materials

Zeynep Yesil Duymus,Ozlem Ozbayram,Alper Ozdogan,Hamza Ulu

doi:10.4236/ojst.2016.64014

Zeynep Yesil Duymus, Ozlem Ozbayram + Show 2 more

Open Access

https://doi.org/10.4236/ojst.2016.64014

Copy DOI

Abstract

The aim of this study was to evaluate the Vickers Hardness of four different denture base materials. Four different denture base materials were used in this study: Heat-cured pink acrylic resin, self-cured acrylic resin, heat-cured clear acrylic resin and polyamide denture base materials. To-tally 80 disc shaped samples which 2 mm thickness and 40 mm diameter were prepared. The samples were stored in distilled water after polished. Then, Vickers Hardness test was performed with TMTeck HV-1000B (200 gram at 15 second). The statistically analysis of obtained data was performed with use one-way analysis of variance test. The results showed that the highest Vickers Hardness value (18.57 HV) was identified in heat-cured (pink) acrylic resin, the lowest Vickers Hardness value (9.62 HV) was identified in polyamide denture base materials. The result of one-way analysis of variance test showed that there were statistically very highly significant differences between four denture base materials of Vickers Hardness (p < 0.001). The obtained data presented that the self-cured denture base acrylic resin was the hardnest denture base materials.

Highlights

In the clinical practice of dentistry, there are many circumstances in which the need to adjust denture base acrylic resin is necessary [1] [2].In 1935, first acrylic resin was produced by the imperial kolladent chemical industry
Four different denture base materials were used in this study: Heat cured pink acrylic resin QC 20 (De Trey, Dentsply, Addlestone, UK), self-cured acrylic resin Takilon, heat cured clear acrylic resin Vertex (Vertex Dental B.V., Zeist, Netherlands) and polyamide denture base materials Deflex (Nuxen S.R.L., Buenos Aires, Argentina) (Figure 1)
The results showed that the highest Vickers Hardness value (18.57 HV) was identified in heat-cured acrylic resin, the lowest Vickers Hardness value (9.62 HV) was identified in polyamide denture base materials (Table 2, Figure 3)

Summary

Introduction

In the clinical practice of dentistry, there are many circumstances in which the need to adjust denture base acrylic resin is necessary [1] [2]. In 1935, first acrylic resin was produced by the imperial kolladent chemical industry. In 1937, heat-polymerized acrylics which developed by Walter H. Writer, have been used extensively as den-. How to cite this paper: Yesil Duymus, Z., Ozdogan, A., Ulu, H. and Ozbayram, O. (2016) Evaluation the Vickers Hardness of Denture Base Materials. Acrylic polymers has been successfully used in various areas such as shutters, denture base materials, artificial teeth, denture repair materials, crowns and bridges face the vestibular prosthesis [3] [4]

Objectives

Methods

Conclusion