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A Comparative Evaluation of Flexural Strength of Commercially Available Acrylic and Modified Polymethylmethacrylate: An in vitro Study

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العنوان: A Comparative Evaluation of Flexural Strength of Commercially Available Acrylic and Modified Polymethylmethacrylate: An in vitro Study
المؤلفون: Amrita Pandita, Naveen S Yadav, S M A Feroz, Praval Pratap Singh, Teerthesh Jain, U K Kartika
المصدر: The Journal of Contemporary Dental Practice. 14:80-83
بيانات النشر: Jaypee Brothers Medical Publishing, 2013.
سنة النشر: 2013
مصطلحات موضوعية: Dental Stress Analysis, Hot Temperature, Materials science, Surface Properties, Three point flexural test, Methylmethacrylate, Polymerization, Comparative evaluation, Dental Materials, chemistry.chemical_compound, Flexural strength, Elastic Modulus, Materials Testing, Humans, Methylmethacrylates, Polymethyl Methacrylate, Composite material, Pliability, General Dentistry, Acrylic resin, Universal testing machine, Elasticity, Monomer, chemistry, Methacrylic acid, visual_art, visual_art.visual_art_medium, Methacrylates, Stress, Mechanical
الوصف: Aim The purpose of this study was to evaluate and compare the flexural strength of commercially available acrylic (trevalone) and modified polymethylmethacrylate (PMMA). Materials and methods Four groups were tested; Group 1— control group regular MMA, group 2—2% methacrylic acid, 88% MMA, group 3—16% methacrylic acid, 84% MMA group 4— 20% methacrylic acid, 80% MMA 15 resin specimens of each group were polymerized. After processing, the specimens were subjected for flexural strength testing using three point bending test in a Universal Testing Machine. All data was statistically analyzed with one-way ANOVA, differences within the groups were analyzed by Scheffe's analysis. Results As the ratio of incorporated methacrylic acid to PMMA increased, the flexural strength decreased. Analysis of data revealed a significant decrease in flexural strength of specimens (p < 0.000) after incorporation of 12%, 16%, 20% methacrylic acid to heat polymerized acrylic resin, when compared with the control group. Lowest flexural strength was observed with specimens containing 20% methacrylic acid and highest flexural strength was observed with specimens containing conventional monomer without methacrylic acid. Conclusion It was observed that as the concentration of methacrylic acid in heat polymerized acrylic resin increases, the flexural strength decreases. Lowest flexural strength was observed with specimens containing 20% methacrylic acid and highest flexural strength was observed with specimens containing conventional monomer without methacrylic acid. Clinical significance The major advantages of addition of methacrylic acid to polymethylmethacrylate could be for the elderly people with restricted manual dexterity or cognitive disturbances, especially for patients who do not follow an adequate denture cleansing protocol and diabetic patients who are more susceptible for denture stomatitis. How to cite this article Jain T, Yadav NS, Pandita A, Feroz SMA, Kartika UK, Singh PP. A Comparative Evaluation of Flexural Strength of Commercially Available Acrylic and Modified Polymethylmethacrylate: An in vitro Study. J Contemp Dent Pract 2013;14(1):80-83.
تدمد: 1526-3711
DOI: 10.5005/jp-journals-10024-1275
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21a68c5badc35ffc4e9653908cd6b7d7
https://doi.org/10.5005/jp-journals-10024-1275
Rights: OPEN
رقم الانضمام: edsair.doi.dedup.....21a68c5badc35ffc4e9653908cd6b7d7
قاعدة البيانات: OpenAIRE
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