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Publisher: Peytchinski Publishing Ltd.
ISSN: 1312-773X (Online)
Issue: 2023, vol. 29, issue2
Subject Area: Dental Medicine
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DOI: 10.5272/jimab.2023292.4939
Published online: 30 May 2023
Review article
J of IMAB. 2023 Apr-Jun;29(2):4939-4942
WATER SORPTION AND WATER SOLUBILITY OF 3D PRINTED AND CONVENTIONAL PMMA DENTURE BASE POLYMERS
Mariya Dimitrova1
, Angelina Vlahova1,2, Rada Kazakova1,2, Bozhana Chuchulska1, Magdalina Urumova1,
1) Department of Prosthetic Dental Medicine, Faculty of Dental Medicine, Medical University - Plovdiv, Bulgaria.
2) CAD/CAM Center of Dental Medicine, Research Institute, Medical University - Plovdiv, Bulgaria.
ABSTRACT:
Background: Patients who cannot afford more expensive prosthetic restorations, such as implant-supported fixed prostheses, prefer removable dentures. Removable dentures have been manufactured with different types of acrylics, including conventional polymer polymethyl methacrylate (PMMA) and the popular nowadays three–dimensional(3D) printed resins. Water sorption and water solubility often occur because these prosthetic restorations are constantly immersed in saliva and always have interactions with oral fluids.
Review results: Alternating processes of imbibition and drying of acrylics lead to internal stresses and fatigue. As a result, dental resins undergo significant dimensional changes. The water diffuses into the dental resin and inflicts a gradual expansion and volume increase, which may cause aging of the material and discomfort during masticatory function.
Denture base resins have low water solubility, which results from the leaching out of unreacted monomer and soluble additives into the oral cavity. This is an undesired property and may cause soft tissue reactions.
Conclusion: The affinity of dental resins for water degrades their mechanical and physical properties and causes dimensional changes in the denture base, which results in internal stresses that have a negative impact on the denture's long-term success.
Keywords: water sorption, water solubility, digital dentistry, 3D printing, CAD/CAM, dimensional stability, acrylic resins, removable dentures,
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Please cite this article as: Dimitrova M, Vlahova A, Kazakova R, Chuchulska B, Urumova M. Water Sorption and Water Solubility of 3D Printed and Conventional PMMA Denture Base Polymers. J of IMAB. 2023 Apr-Jun;29(2):4939-4942. DOI: 10.5272/jimab.2023292.4939
Correspondence to: Mariya Dimitrova, Department of Prosthetic Dentistry, Faculty of Dental Medicine, Medical University - Plovdiv; 3, Hristo Botev Blvd., Plovdiv, Bulgaria; E-mail: maria.dimitrova@mu-plovdiv.bg
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Received: 08 August 2022
Published online: 30 May 2023