The effects of therapeutic x-ray doses on mechanical, chemical and physical properties of poly methyl methacrylate
| Autor: | Gulderen Karakus, Birsen Yücel, Yıldıray Özgüven, Onur Şahin, Derya Ozdemir Dogan, Mansur Doğan, Nilüfer Tülin Polat |
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| Přispěvatelé: | [Dogan, Derya Ozdemir] Cumhuriyet Univ, Sch Dent, Dept Prosthet Dent, Sivas, Turkey -- [Ozguven, Yildiray -- Yucel, Birsen] Cumhuriyet Univ, Sch Med, Dept Radiat Oncol, Sivas, Turkey -- [Karakus, Gulderen] Cumhuriyet Univ, Sch Med, CUTFAM RCCUSM, Res Ctr, Sivas, Turkey -- [Sahin, Onur] Karaelmas Univ, Sch Dent, Dept Prosthet Dent, TR-67600 Zonguldak, Turkey -- [Polat, Nilufer Tulin] Inonu Univ, Sch Dent, Dept Prosthet Dent, Malatya, Turkey -- [Dogan, Mansur] Hosp Numune, Dept Otolaryngol, Sivas, Turkey, KARAKUS, Gulderen -- 0000-0003-2596-9208, Zonguldak Bülent Ecevit Üniversitesi |
| Rok vydání: | 2012 |
| Předmět: |
Ionizing radiation
Transverse strength Dental Stress Analysis Materials science poly methyl-methacrylate Chemical structure elastic modulus Group (periodic table) Elastic Modulus Tensile Strength Poly methyl-methacrylate Materials Testing Spectroscopy Fourier Transform Infrared Polymer chemistry Humans Polymethyl Methacrylate Irradiation Fourier transform infrared spectroscopy General Dentistry Elastic modulus radiotherapy Analysis of Variance Radiotherapy technology industry and agriculture X-ray Dose-Response Relationship Radiation Radiotherapy Dosage General Medicine Poly(methyl methacrylate) visual_art visual_art.visual_art_medium ionizing radiation transverse strength Nuclear chemistry |
| Zdroj: | Acta Odontologica Scandinavica. 71:45-49 |
| ISSN: | 1502-3850 0001-6357 |
| DOI: | 10.3109/00016357.2011.653826 |
| Popis: | WOS: 000312708100007 PubMed ID: 22937886 Aim. The aim of this study was to investigate the effect of radiation doses very close to the human dose for oral cancers on mechanical, chemical and physical properties for poly methyl-methacrylate (PMMA). Methods. PMMA samples were divided into four different groups: no irradiated group, 25-Gy irradiated group, 50-Gy irradiated group and 75-Gy irradiated group. Each group contained nine samples. After 24 h, a three-point loading test was applied to each PMMA groups. The transverse strength and the elastic modulus were calculated using the test results. The results were analyzed statistically by using one-way analysis of variance. The structural characterizations of the PMMA samples were carried out by a Fourier Transform Infrared (FTIR) spectrophotometer to evaluate the chemical structure differences. Results. The transverse strength values of 25-Gy, 50-Gy and 75-Gy radiation groups were significantly higher than that of the no radiation group (p < 0.05). There was no significant difference among the elastic modulus values of the study groups (p > 0.05). The FTIR findings demonstrated that the irradiation process did not change the chemical structure of the PMMA polymeric materials. Conclusion. The therapeutic radiation doses increase the mechanical properties of the PMMA; however, the chemical and structural properties have no effect. When the findings of this study are taken into account, it can be said that patients can wear dentures during the radiotherapy. |
| Databáze: | OpenAIRE |
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