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Information Journal Paper

Title

EVALUATION OF THE COLOR STABILITY OF METHYL METHACRYLATE AND NYLON BASE POLYMER

Pages

  136-142

Abstract

 Statement of the Problem: Evaluation of the COLOR STABILITY of materials used for the fabrication of the base of complete and partial removable dentures provides important information in relation to their clinical service. The COLOR STABILITY of NYLON-BASED POLYMERs as denture bases, compared to that of acrylic resins, has not been extensively evaluated since to date.Purpose: The aim of the present in vitro study was to evaluate the COLOR STABILITY of conventional polymethyl methacrylate and NYLON-BASED POLYMER materials used for the fabrication of the base of complete and partial removable dentures.Materials and Method: Twenty samples were evaluated in the present in vitro study. One NYLON-BASED POLYMER and one heat-cured acrylic resin were seleted for the purpose of the study. Ten disk samples, measuring 10 mm in diameter and 2 mm in thickness, were prepared from each material according to the manufacturers’ instructions. The samples were evaluted with the CIELAB sysem using spectrophtometery at baseline and after irradiation with UV light for 100 and 200 hours and thermocycling. One-way ANOVA and post hoc paired t-test were used to compare the COLOR STABILITY of the two groups. Statistical significance was set at p<0.05.Results: After 100 hours of irradiation with UV light and thermo cycling, color changes were tangible in both materials. After 200 hours of irradiation with UV light and thermo cycling, both materials exhibited a decrease in glaze. In general, chromatic changes in the acrylic resin were more noticeable.Conclusion: Accelerated aging affected the COLOR STABILITY of the acrylic resin and NYLON-BASED POLYMER, p<0.05 for Da200 and Db200 and DL100; however, at the end of the study both materials exhibited clinically acceptable COLOR STABILITY (DE<3.7).

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    • Cite

    APA: Copy

    HAMEDI RAD, FAHIMEH, GHAFFARI, TAHEREH, & TAMGAJI, RAANA. (2017). EVALUATION OF THE COLOR STABILITY OF METHYL METHACRYLATE AND NYLON BASE POLYMER. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), 18(2), 136-142. SID. https://sid.ir/paper/703396/en

    Vancouver: Copy

    HAMEDI RAD FAHIMEH, GHAFFARI TAHEREH, TAMGAJI RAANA. EVALUATION OF THE COLOR STABILITY OF METHYL METHACRYLATE AND NYLON BASE POLYMER. JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES)[Internet]. 2017;18(2):136-142. Available from: https://sid.ir/paper/703396/en

    IEEE: Copy

    FAHIMEH HAMEDI RAD, TAHEREH GHAFFARI, and RAANA TAMGAJI, “EVALUATION OF THE COLOR STABILITY OF METHYL METHACRYLATE AND NYLON BASE POLYMER,” JOURNAL OF DENTISTRY (SHIRAZ UNIVERSITY OF MEDICAL SCIENCES), vol. 18, no. 2, pp. 136–142, 2017, [Online]. Available: https://sid.ir/paper/703396/en

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