Ibrahim Mohamed Hamouda^1,2* and Hanadi A Lamfon³

¹Professor of Dental Biomaterials, Department of Restorative Dentistry, Faculty of Dentistry, Umm Alqura University, Makkah, KSA
²Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
³Associate Professor of Prosthetic branch of Maxillofacial and Oral Rehabilitation Department, Faculty of Dentistry, Umm Alqura University, Makkah, KSA

*Corresponding Author: Ibrahim Mohamed Hamouda, Professor of Dental Biomaterials, Department of Restorative Dentistry, Faculty of Dentistry, Umm Alqura University, Makkah, KSA.

Received: February 15, 2023; Published: March 02, 2023

Abstract

Objectives: The aim of this study was to evaluate the aged micro-hardness and fracture toughness of thermoplastic resin (ThermoSens) versus the conventional denture base resin (Major base 20).

Materials and Methods: For the hardness test, 20 square-shaped specimens (12 mm x 12 mm x 3 mm thickness) were prepared from both denture base materials using a stainless die. The hardness was measured for each specimen using a micro-hardness tester. For the fracture toughness testing, 20 rectangular specimens were prepared from both denture base materials using stainless steel plate. The specimen dimensions were 65 mm length, 10 mm width and 2.5 mm thickness. Each specimen has a central V-shaped notch of 2.5 mm depth. The fracture toughness was measured by a three-point bending test using a universal Lloyd testing machine.

Results: The conventional denture base resin (Major base 20) showed significantly higher hardness than that of thermoplastic denture base material (ThermoSens). On the other hand, thermoplastic denture base material (ThermoSens) showed significantly higher fracture toughness than that of the conventional denture base resin (Major base 20).

Conclusion: After one year of water storage, thermoplastic denture base material (ThermoSens) has higher fracture toughness and lower micro-hardness than that of the conventional denture base resin (Major base 20).

Keywords: Thermoplastic Denture Base; Heat-Cured Material; Micro-Hardness; Fracture Toughness

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Citation

Citation: Ibrahim Mohamed Hamouda and Hanadi A Lamfon. “Micro-Hardness and Fracture Toughness of Thermosens Thermoplastic Material Versus the Conventional Heat-Cured Acrylic Resin After One Year of Water Storage".Acta Scientific Dental Sciences 7.4 (2023): 02-07.

Copyright

Copyright: © 2023 Ibrahim Mohamed Hamouda and Hanadi A Lamfon. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.