Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins
The aim of this study was to examine the mechanical properties of a new surface-modified denture resin for its suitability as denture base material. This experimental resin is made by copolymerization of methacrylic acid (MA) to poly(methyl methacrylate) (PMMA) to produce a negative charge. Four exp...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | International Journal of Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2009/841431 |
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| author | Sang E. Park Maggie Chao P. A. Raj |
| author_facet | Sang E. Park Maggie Chao P. A. Raj |
| author_sort | Sang E. Park |
| collection | DOAJ |
| description | The aim of this study was to examine the mechanical properties of a new surface-modified denture resin for its suitability as denture base material. This experimental resin is made by copolymerization of methacrylic acid (MA) to poly(methyl methacrylate) (PMMA) to produce a negative charge. Four experimental groups consisted of Orthodontic Dental Resin (DENTSPLY Caulk) as a control and three groups of modified PMMA (mPMMA) produced at differing ratios of methacrylic acid (5 : 95, 10 : 90, and 20 : 80 MA : MMA). A 3-point flexural test using the Instron Universal Testing Machine (Instron Corp.) measured force-deflection curves and a complete stress versus strain history to calculate the transverse strength, transverse deflection, flexural strength, and modulus of elasticity. Analysis of Variance and Scheffe Post-test were performed on the data. Resins with increased methacrylic acid content exhibited lower strength values for the measured physical properties. The most significant decrease occurred as the methacrylic acid content was increased to 20% mPMMA. No significant differences at P<.05 were found in all parameters tested between the Control and 5% mPMMA. |
| format | Article |
| id | doaj-art-061923080732464884192b8d5e82f47b |
| institution | Kabale University |
| issn | 1687-8728 1687-8736 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Dentistry |
| spelling | doaj-art-061923080732464884192b8d5e82f47b2025-02-03T05:52:09ZengWileyInternational Journal of Dentistry1687-87281687-87362009-01-01200910.1155/2009/841431841431Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture ResinsSang E. Park0Maggie Chao1P. A. Raj2Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, 188 Longwood Avenue, Boston, MA 02115, USAPrivate practice, 1111 Civic Drive, Suite 321, Walnut Creek, CA 94596, USADivision of Research and Development, Perident Therapeutics, Inc., 5611 West Morgan Avenue, Unit L, Milwaukee, WI 53220, USAThe aim of this study was to examine the mechanical properties of a new surface-modified denture resin for its suitability as denture base material. This experimental resin is made by copolymerization of methacrylic acid (MA) to poly(methyl methacrylate) (PMMA) to produce a negative charge. Four experimental groups consisted of Orthodontic Dental Resin (DENTSPLY Caulk) as a control and three groups of modified PMMA (mPMMA) produced at differing ratios of methacrylic acid (5 : 95, 10 : 90, and 20 : 80 MA : MMA). A 3-point flexural test using the Instron Universal Testing Machine (Instron Corp.) measured force-deflection curves and a complete stress versus strain history to calculate the transverse strength, transverse deflection, flexural strength, and modulus of elasticity. Analysis of Variance and Scheffe Post-test were performed on the data. Resins with increased methacrylic acid content exhibited lower strength values for the measured physical properties. The most significant decrease occurred as the methacrylic acid content was increased to 20% mPMMA. No significant differences at P<.05 were found in all parameters tested between the Control and 5% mPMMA.http://dx.doi.org/10.1155/2009/841431 |
| spellingShingle | Sang E. Park Maggie Chao P. A. Raj Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins International Journal of Dentistry |
| title | Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins |
| title_full | Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins |
| title_fullStr | Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins |
| title_full_unstemmed | Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins |
| title_short | Mechanical Properties of Surface-Charged Poly(Methyl Methacrylate) as Denture Resins |
| title_sort | mechanical properties of surface charged poly methyl methacrylate as denture resins |
| url | http://dx.doi.org/10.1155/2009/841431 |
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