Effect of Ethanol Addition on some Properties of Self-Polymerized Acrylic Resins

Y. Hameed, Najwah

doi:10.25130/tjds.9.1.1

	Effect of Ethanol Addition on some Properties of Self-Polymerized Acrylic Resins
Tikrit Journal for Dental Sciences
Volume 9, Issue 1, June 2021, Pages 1-6 PDF (259.27 K)
DOI: 10.25130/tjds.9.1.1
Author
Najwah Y. Hameed^*
Ass. Lec., Department of Prosthetic Dentistry, College of Health & Medical Technology.
Abstract
Background: Self-polymerized acrylic resins are widely utilized in dentistry. A higher residual monomer content is seen after polymerization of denture base resins. The literature showed that the ethanol solvent could rise the leaching of residual monomer from the polymer. The purpose of the current research was to investigate the influence of ethanol addition on hardness and roughness of acrylic resins. Materials and Methods: Sixty acrylic resin specimens were prepared and were divided into 2 main sets due to the kind of test used (surface hardness and surface roughness). There were three groups according to the ethanol concentrations.The first group was the control specimens with no ethanol,the second group was loaded with 10 ml of ethanol; and the third group was loaded with 15 ml of ethanol. The acrylic specimens were measured using the Shore A Durometer hardness and the surface roughness tester. Results: showed that the addition of ethanol significantly decrease the surface hardness of acrylic resins. The results indicated that there are significant differences between groups (P< 0.0010).However, no significant differences between 10ml and 15 ml groups (P>0.05). For surface roughness test, no significant differences were found among the studied groups (P>0.05). Conclusions: The addition of ethanol to self-polymerized acrylic resins would significantly decrease the hardness and increases the surface roughness of acrylic resins.
Keywords
Ethanol Surface Hardness surface roughness

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