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      Flexible denture base material: A viable alternative to conventional acrylic denture base material

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          Abstract

          Although clinician's skills and experience play a major role in designing and fabrication of the optimum prosthodontic restorations, the selection of denture resins is equally important, especially when the patient has been using the prostheses since long. Eighteen cases who were not satisfied with their conventional acrylic dentures were selected. They were provided flexible dentures along with a questionnaire to precisely evaluate the advantages of new material. Prosthodontic planning & observations regarding this material are discussed on various parameters.

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          The reinforcement of dentures.

          D. C. Jagger, A. Harrison, K. D. Jandt (1999)
          The material most commonly used for the fabrication of complete dentures is poly (methyl methacrylate) (PMMA). This material is not ideal in every respect and it is the combination of virtues rather than one single desirable property that accounts for its popularity and usage. Despite its popularity in satisfying aesthetic demands it is still far from ideal in fulfilling the mechanical requirements of a prosthesis. The fracture of dentures may be due to the mechanical properties of the acrylic resin or may be due to a multiplicity of factors leading to failure of the denture base material. Generally, there are three routes which have been investigated to improve the impact properties of PMMA: the search for, or development of, an alternative material to PMMA; the chemical modification of PMMA such as by the addition of a rubber graft copolymer; and the reinforcement of PMMA with other materials such as carbon fibres, glass fibres and ultra-high modulus polyethylene. The following review of attempts to improve the mechanical properties of denture base material takes account of papers published during the last 30 years.
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            Some flexural properties of a nylon denture base polymer.

            Ahmed Hassan, Mahmood Rashid, L L Azmi … (2004)
            Nylon denture base material could be a useful alternative to poly (methyl methacrylate) (PMMA) in special circumstances such as patient allergy to the monomer. The aim of this study was to evaluate the flexural properties of a nylon denture base material (Lucitone FRS), a conventional compression-moulded heat-polymerized (Meliodent), a compression-moulded microwave-polymerized (Acron MC) and an injection-moulded microwave-polymerized (Lucitone 199) PMMA polymers. The effect of aldehyde-free, oxygen releasing disinfectant solution (Perform) on these properties was also investigated. The flexural modulus and the flexural strength were assessed with a three-point bending test. Specimens were stored in water at a temperature of 37 degrees C for 30 days. For each material, half of the prepared specimens were randomly selected and immersed in the disinfectant 24 h prior to testing. Results were compared statistically at a confidence level of 95%. The result showed that in both the control and disinfected groups, the flexural modulus of nylon was significantly lower than the three PMMA polymers. The flexural strength of nylon was significantly lower than those of Meliodent and Acron MC but was comparable with Lucitone 199. A 24-h immersion in the disinfecting solution increased the rigidity of nylon denture base material.
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              Phillips’ Science of Dental Materials

              K.J. Anusavice, KJ Anusavice, K.J ANUSAVICE … (1996)
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                Author and article information

                Journal
                Journal ID (nlm-ta): Contemp Clin Dent
                Journal ID (publisher-id): CCD
                Title: Contemporary Clinical Dentistry
                Publisher: Medknow Publications & Media Pvt Ltd (India )
                ISSN (Print): 0976-237X
                ISSN (Electronic): 0976-2361
                Publication date (Print): Oct-Dec 2011
                Volume: 2
                Issue: 4
                Pages: 313-317
                Affiliations
                [1] Department of Prosthodontcs, Command Military Dental Centre (Southern command) , Pune, Maharashtra, India
                Author notes
                Correspondence: Maj Gen J. P. Singh, Commandant and Command Dental Adviser, C M D C (SC), Pune – 400 040, Maharashtra, India. E-mail: dr.jpsingh@ 123456hotmail.com
                Article
                Publisher ID: CCD-2-313
                DOI: 10.4103/0976-237X.91795
                PMC ID: 3276859
                PubMed ID: 22346159
                SO-VID: 61c910a5-4fc1-4424-82e7-067385c7a472
                Copyright © Copyright: © Contemporary Clinical Dentistry
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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                Categories
                Subject: Original Article

                ScienceOpen disciplines: Dentistry
                Keywords: denture base materials,flexible dentures,acrylic dentures
                Data availability:
                ScienceOpen disciplines: Dentistry
                Keywords: denture base materials, flexible dentures, acrylic dentures

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