کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5434683 1509150 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface characterization of polymers used in fabrication of interim prostheses after treatment with photopolymerized glaze
ترجمه فارسی عنوان
خصوصیات سطحی پلیمرهای مورد استفاده در ساخت پروتزهای موقت پس از درمان با لعاب فوم پلیمریزه شده
کلمات کلیدی
رزین های کامپوزیتی، رزین های اکریلیک، رنگ، سختی پرداخت مواد شیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
چکیده انگلیسی


- Polymers used in fabrication of interim prostheses were analyzed.
- The influence of a chemical polishing on these polymers was analyzed.
- Analysis of color and microhardness, as well as AFM, SEM, and EDS were performed.
- The glaze improved the properties of the analyzed polymers.

The material used for interim prostheses fabrication must present excellent physical properties for greater longevity in the face of environmental conditions, which can occur in the oral cavity. The purpose of this study was to evaluate the effect of a photopolymerized glaze on the physical and mechanical properties of polymers used for the fabrication of interim prostheses, before and after thermocycling and immersion in staining solutions. One hundred samples of composite and acrylic resins were fabricated: Dencor chemically activated acrylic resin (CAAR) (n = 20) and heat-polymerized acrylic resin (HPAR) (n = 20), Charisma (n = 20), Structur (n = 20), and Protemp (n = 20). A mechanical polishing was performed on half of the samples, and a chemical polishing was performed on the remaining samples. Subsequently, all samples were submitted to thermocycling and immersion in coffee staining solution for 21 days. Analysis of color and microhardness, as well as atomic force microscopy (AFM), scanning electron microscopy (SEM), and energy dispersive x-ray spectrometry (EDS) were performed. The data were submitted to repeated-measures analysis of variance (ANOVA), followed by the Tukey test (α = 0.05) and the Student t-test (α = 0.05). It was verified that the glaze decreased the chromatic alteration values, and increased the microhardness values of the samples, with the exception of the Charisma resin. The samples that did not receive chemical polishing had the greatest number of surface irregularities. This study concluded that the groups with glaze presented less color alteration. In addition, Charisma and Structur resins exhibited the greatest chromatic stability. As to the microhardness, the values were greater when the samples were treated with the glaze, with the exception of the Charisma group.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: C - Volume 71, 1 February 2017, Pages 755-763
نویسندگان
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