Evaluation the Compressive Strength of Two Types of Self Cure Acrylic Resin (With &Without Cross-Linking Agent) Processed Under Different Degrees of Pressure

Mousa Aoda, Layla; Sahib Mansoor, Nidhal

doi:10.25130/tjds.13.1.13

	Evaluation the Compressive Strength of Two Types of Self Cure Acrylic Resin (With &Without Cross-Linking Agent) Processed Under Different Degrees of Pressure
Tikrit Journal for Dental Sciences
Volume 13, Issue 1, June 2025, Pages 119-126 PDF (358.6 K)
DOI: 10.25130/tjds.13.1.13
Authors
Layla Mousa Aoda; Nidhal Sahib Mansoor^*
Department of Prosthetic Dental Techniques, College of Health and Medical Techniques, Middle Technical University, Baghdad, Iraq.
Abstract
Both of the mechanical and physical qualities of the acrylic resin can be affected by the pressures since they have a direct effect on the chemical reaction that occurred during the polymerization. The aim of this study was to examine the compressive strength features of the basic materials for self-cured acrylic resin dentures using several pressure modalities to be then compared with those polymerized under a pressure of 30 psi. Fifty self-cured acrylic resin specimens have been collected in two main groups (25 specimens without cross-linking and 25 specimens with crosslinking). From each main group, 5 specimens that polymerized in water at 37°C under 30 psi pressure were used as a control group, and the other specimens polymerized in water at 37°C under 25 psi, 50 psi, 75 psi, and 100 psi pressure as four experimental groups, with 5 specimens prepared for each group. The results showed that the self-cured acrylic resin with a cross-linking agent gives higher compressive strength than the self-cured acrylic resin without a cross-linking agent. Additionally, the compressive strength of two self-curing acrylic resin versions (with and without cross-linking) decomposed in water at 37 degrees Celsius under (50 psi, 75 psi, and 100 psi) pressure was improved compared with that processed at 30 psi pressure (control group);at the same time, the specimens that polymerized at (100 psi) pressure showed a highly significant increase in the compressive strength compared with both the control group and other experimental groups. While 25 psi was reduced compressive strength at these pressures in comparison to control groups.Finally, one can draw a conclusion stating that the processing pressure and the type of acrylic resin can be considered as important factors in improving compressive strength property.
Keywords
compressive strength cross linking agent Mechanical Properties self; cure acrylic

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