A comparative evaluation of impact strength of conventionally heat cured and high impact heat cured polymethyl methacrylate denture base resins: an in vitro study
| Autor: | Shekar Mc, Sashi Deepth Reddy, R Narendra, Balasubramanyam S, Reddy Ns, Purna Cr |
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| Rok vydání: | 2014 |
| Předmět: |
Dental Stress Analysis
Denture Bases Materials science Hot Temperature Time Factors medicine.medical_treatment Acrylic Resins Methacrylate Comparative evaluation Polymerization chemistry.chemical_compound Dental Materials Polymer chemistry Materials Testing medicine In vitro study Humans Methylmethacrylates Polymethyl Methacrylate Composite material General Dentistry Acrylic resin Acrylate Water Izod impact strength test chemistry visual_art visual_art.visual_art_medium Denture base Stress Mechanical Dentures |
| Zdroj: | The journal of contemporary dental practice. 14(6) |
| ISSN: | 1526-3711 |
| Popis: | The denture bases made by using polymethyl methacrylates of Acrylic resin family have excellent physical properties, simple to process and easy to reline, rebase and repair. One of the inherent disadvantages of this material is the liability to break during function. The strength assessment of acrylic resins have been made generally by transverse deflection tests.AimTo evaluate the impact strength valves of certain brands of commercially available denture base resins and suggest their suitability.Materials and methodsThe denture bases we made using polymethyl methacrylates of acrylic resin family because they have excellent physical properties, simple to process and easy to reline and rebase. Six commercial brands of polymethyl methacrylate, namely Stellon (DPI-India), Acralyn-H (Asian Acrylate, India), Trevalon (Dentsply-England), Lucitone 199 (Dentsply/ York division), Acralyn-H (Super Unbreakable), Trevalon HI (Dentsply, Detray division, England) were tested by breaking them using Analog Pendulum (ASTM D 256).ResultsFrom the entire study the maximum impact strength was reported for Acralyn-H super unbreakable (Asian Acrylates, India) 62.19 joules.ConclusionAll the analysis led to conclusion that there is basic change in material composition within and among the different groups of denture base resins.Clinical implicationsThe complete dentures made using denture base resins with high impact strength valves (e.g. Acralyn-H super unbreakable) will be more durable and can be used by the patient for considerable period of time, i.e. beyond 4 to 5 years.How to cite this articleNarendra R, Reddy NS, Reddy SD, Purna CRS, Shekar MC, Balasubramanyam S. A Comparative Evaluation of Impact Strength of Conventionally Heat Cured and High Impact Heat Cured Polymethyl Metharylate Denture Base Resins: Anin vitroStudy. J Contemp Dent Pract 2013;14(6): 1115-1121. |
| Databáze: | OpenAIRE |
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