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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Devlin, Hugh
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 20243D-printed nanocomposite denture base resin: the effect of incorporating TiO2 nanoparticles on the growth of Candida albicanscitations
- 2024Impact of Artificial Aging on the Physical and Mechanical Characteristics of Denture Base Materials Fabricated via 3D Printingcitations
- 20233D‐Printed nanocomposite denture base resin:The effect of incorporating TiO 2 nanoparticles on the growth of Candida albicanscitations
- 20233D‐Printed nanocomposite denture base resin: The effect of incorporating TiO2 nanoparticles on the growth of candida albicanscitations
- 20233D printed denture base material: The effect of incorporating TiO2 nanoparticles and artificial ageing on the physical and mechanical propertiescitations
- 20233D‐Printed nanocomposite denture base resin: The effect of incorporating TiO 2 nanoparticles on the growth of candida albicanscitations
- 2022Assessing the physical and mechanical properties of 3D printed acrylic material for denture base applicationcitations
- 2018Effect of the Er: YAG laser on the shear bond strength of conventional glass ionomer and Biodentine™ to dentinecitations
- 2007A mathematical model for simulating the bone remodeling process under mechanical stimuluscitations
- 2006Hardness of enamel exposed to Coca-Cola(R) and artificial saliva.
- 2005The effect of water absorption on acrylic surface propertiescitations
Places of action
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article
The effect of water absorption on acrylic surface properties
Abstract
Purpose: The aim of the present study was to determine whether an increased water content during thermal cycling of hot water-treated acrylic was associated with a reduction in surface hardness and an increased opacity or whitening of the surface. Materials and Methods: Ten acrylic samples were treated with 30 soak cycles (cycle duration, 24 hours), using warm water (40°C) and an alkaline peroxide tablet (Efferdent® control group); a further ten samples were treated with boiling water (100°C) and one Efferdent® tablet (experimental group). Indentation hardness of the acrylic specimens was measured prior to and immediately following the completion of the warm and hot water treatments, using an automated micro-indentation system. The hydrated acrylic specimens were then allowed to air dry at room temperature (20°C) and were weighed weekly until they had obtained a constant dry weight. The loss in weight of the acrylic specimens represented the maximum water absorption. Results: The hot water-treated specimens were much whiter than the warm water-treated specimens. The mean reduction in hardness (H IT) of the acrylic specimens following the treatment with hot water and alkaline peroxide tablet was 12.9%. Treatment with warm water and alkaline peroxide resulted in a slight increase in mean hardness (2.63%). There was a significant correlation between the water content of the acrylic specimens after treatment and the percentage of change in indentation hardness (r = 0.495, p = 0.026). Conclusions: The hot water treatment of the acrylic was associated with a significant reduction in hardness. We attribute the whitening and reduction in the hardness of the hot water-treated specimens to absorption of water and a disruption of the acrylic surface structure. Copyright © 2005 by The American College of Prosthodontists.