The Journal of Advanced Prosthodontics

  • 제6권4호
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  • Pages.309-316
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  • 2014
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  • 2005-7806(pISSN)
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  • 2005-7814(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
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The effect of repeated firings on the color change and surface roughness of dental ceramics

  • Gonuldas, Fehmi (Department of Prosthodontics, Faculty of Dentistry, Ankara University) ;
  • Yilmaz, Kerem (Dental Clinic) ;
  • Ozturk, Caner (Department of Prosthodontics, Faculty of Dentistry, Ankara University)
  • 투고 : 2014.02.03
  • 심사 : 2014.05.23
  • 발행 : 2014.08.29
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초록

PURPOSE. The color of the ceramic restorations is affected by various factors such as brand, thickness of the layered the ceramic, condensation techniques, smoothness of surface, number of firings, firing temperature and thickness of dentin. The aim of this study was to evaluate the color change and surface roughness in dental porcelain with different thicknesses during repeated firings. MATERIALS AND METHODS. Disc-shaped (N=21) metal-ceramic samples (IPS Classic; Ivoclar Vivadent; Shaar, Liechtenstein) with different thickness were exposed to repeated firings. Color measurement of the samples was made using a colorimeter and profilometer was used to determine surface roughness. ANOVA and Tukey tests with repeated measurements were used for statistical analysis. RESULTS. The total thickness of the ceramics which is less than 2 mm significantly have detrimental effect on the surface properties and color of porcelains during firings (P<.05). CONCLUSION. Repeated firings have effects on the color change and surface roughness of the dental ceramics and should be avoided.

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참고문헌

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