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Investigation of the Linear Thermal Expansion Coefficient of Four Different Types of Phosphat Investment Materials

Dragutin Komar ; Department of Fixed Prosthodontics, School of Dentistry, University of Zagreb, Croatia
Biserka Lazić ; Department of Fixed Prosthodontics, School of Dentistry, University of Zagreb, Croatia
Adnan Ćatović ; Department of Fixed Prosthodontics, School of Dentistry, University of Zagreb, Croatia
Tomislav Ivaniš ; Department of Fixed Prosthodontics, School of Dentistry, University of Zagreb, Croatia
Ivo Baučić ; Department of Fixed Prosthodontics, School of Dentistry, University of Zagreb, Croatia

Puni tekst: hrvatski, pdf (8 MB) str. 181-187 preuzimanja: 1.255* citiraj
APA 6th Edition
Komar, D., Lazić, B., Ćatović, A., Ivaniš, T. i Baučić, I. (1996). Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala. Acta stomatologica Croatica, 30 (3), 181-187. Preuzeto s https://hrcak.srce.hr/98634
MLA 8th Edition
Komar, Dragutin, et al. "Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala." Acta stomatologica Croatica, vol. 30, br. 3, 1996, str. 181-187. https://hrcak.srce.hr/98634. Citirano 20.09.2020.
Chicago 17th Edition
Komar, Dragutin, Biserka Lazić, Adnan Ćatović, Tomislav Ivaniš i Ivo Baučić. "Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala." Acta stomatologica Croatica 30, br. 3 (1996): 181-187. https://hrcak.srce.hr/98634
Harvard
Komar, D., et al. (1996). 'Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala', Acta stomatologica Croatica, 30(3), str. 181-187. Preuzeto s: https://hrcak.srce.hr/98634 (Datum pristupa: 20.09.2020.)
Vancouver
Komar D, Lazić B, Ćatović A, Ivaniš T, Baučić I. Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala. Acta stomatologica Croatica [Internet]. 1996 [pristupljeno 20.09.2020.];30(3):181-187. Dostupno na: https://hrcak.srce.hr/98634
IEEE
D. Komar, B. Lazić, A. Ćatović, T. Ivaniš i I. Baučić, "Istraživanja koeficijenta linearnog termičkog rastezanja četiriju različitih vrsta fosfatnih uložnih materijala", Acta stomatologica Croatica, vol.30, br. 3, str. 181-187, 1996. [Online]. Dostupno na: https://hrcak.srce.hr/98634. [Citirano: 20.09.2020.]

Sažetak
The fit alloy castings used in fixed prosthodontics is dependent on the physico-chemical features of the investment. The aim of this study was to investigate the polymorphic transformation phases constituting the investment materials by X-ray diffraction analysis on a Philips diffractometer. The coefficient of linear heat expansion for the investment materials studied was obtained using a Chevenard dilatometer. The study was performed on tour types o f investment
materials: Univest 1 P, Begoral, Politerm C and Zeusvest. The highest coefficient of heat expansion was recorder for the specimen o f Begoral (1.13 %), and the lowest for Politerm C (0.99 %). The Politerm C and Zeusvest materials were found to have almost dentical dilatometric characteristics. A large proportion o f low temperature portion o f quartz and crystobalit in the specimens o f Zeusvest and Politerm C investments was demonstrated by the analysis o f dijfractograms.

Ključne riječi
investment materials; dilatometric analysis; X-ray diffraction analysis

Hrčak ID: 98634

URI
https://hrcak.srce.hr/98634

[hrvatski]

Posjeta: 1.390 *