Saleh Abdullah Al-Ghamdi1, Omar Abdullah Alsfri2 and Ibrahim Mohamed Hamouda1,3*
1Restorative Dentistry Department, Faculty of Dentistry, Umm Al-Qura University, KSA
2Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Umm Al-Qura University, KSA
3Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
*Corresponding Author: Ibrahim Mohamed Hamouda, Professor of Dental Biomaterials, Dental Biomaterials Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt and Professor of Dental Biomaterials, Restorative Dentistry Department, Faculty of Dentistry, Umm Al-Qura University, KSA.
Received: December 16, 2018; Published: April 21, 2018
Citation: Ibrahim Mohamed Hamouda., et al. “Dimensional Changes and Water Sorption of Vertex Thermosense Versus a Conventional Heat Cured Denture Base Materials”. Acta Scientific Dental Sciences 2.5 (2018).
Objectives: This study aimed to compare the dimensional changes and water sorption of Vertex Thermosense and the conventional heat-cured denture base materials.
Materials and Methods: Two types of dentures base materials were used (Vertex Thermosense and Major.base.20). Twenty wax specimens were prepared from both materials of 65 mm long, 10 mm wide, and 3 mm thick. The wax specimens were flasked and processed according to the ANSI/ADA specification No. 12 for denture base polymer and according to the manufacturer’s instructions. The dimensional changes were measured immediately after deflasking, one day, two days and three days of water storage. The dimensional changes were measured using micrometer. For water sorption, twenty disk specimens of 50 ± 1 mm in diameter and 0.5 ± 0.05 mm thick were prepared. Water sorption was measured using an electronic balance.
Results: The results of this study showed that, Vertex Thermosense denture base material exhibited higher dimensional changes and water sorption than that of the conventional material (Major.base.20).
Conclusion: ThermoSense showed significant shrinkage all over the tested periods. On the other hand, Major.base.20 denture base material showed significant expansion to compensate the curing shrinkage after 3 days of water storage. Vertex ThermoSense showed significantly higher water sorption than that of Major.base.20. Both materials exhibited increasing amount of water sorption up to 3 days.
Keywords: Vertex Thermosense; Denture Base Material; Conventional Acrylic Resin; Dimensional Changes; Water Sorption
Copyright: © 2018 Ibrahim Mohamed Hamouda., et al. 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.