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Original scientific paper
Investigation of the Effect of Variation of Cross- Linking Agents and two Heating Rates on Glass Transition of a Denture Base Acrylic Resin
Vjekoslav Jerolimov
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Robert G. Jagger
; Department of Restorative Dentistry School of Dentistry, University of Wales College of Medicine, Cardiff, Wales, Velika Britanija
Paul J. Millward
; Department of Restorative Dentistry School of Dentistry, University of Wales College of Medicine, Cardiff, Wales, Velika Britanija
Vlado Carek
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
| Fulltext: croatian, pdf (8 MB) | pages 19-24 | cite | |
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APA 6th Edition Jerolimov, V., Jagger, R.G., Millward, P.J. & Carek, V. (1997). Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata. Acta stomatologica Croatica, 31 (1), 19-24. Retrieved from https://hrcak.srce.hr/99348 MLA 8th Edition Jerolimov, Vjekoslav, et al. "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata." Acta stomatologica Croatica, vol. 31, no. 1, 1997, pp. 19-24. https://hrcak.srce.hr/99348. Accessed 19 Apr. 2021. Chicago 17th Edition Jerolimov, Vjekoslav, Robert G. Jagger, Paul J. Millward and Vlado Carek. "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata." Acta stomatologica Croatica 31, no. 1 (1997): 19-24. https://hrcak.srce.hr/99348 Harvard Jerolimov, V., et al. (1997). 'Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata', Acta stomatologica Croatica, 31(1), pp. 19-24. Available at: https://hrcak.srce.hr/99348 (Accessed 19 April 2021) Vancouver Jerolimov V, Jagger RG, Millward PJ, Carek V. Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata. Acta stomatologica Croatica [Internet]. 1997 [cited 2021 April 19];31(1):19-24. Available from: https://hrcak.srce.hr/99348 IEEE V. Jerolimov, R.G. Jagger, P.J. Millward and V. Carek, "Učinak rasta količine umreživača i stope zagrijavanja na promjenu temperature staklastog prijelaza akrilata", Acta stomatologica Croatica, vol.31, no. 1, pp. 19-24, 1997. [Online]. Available: https://hrcak.srce.hr/99348. [Accessed: 19 April 2021] |
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Abstracts
The purpose of the study was to investigate the effect of two different
heating rates used in order to evaluate the transition glass temperature of dough-moulded poly (methylmethacrylate) denture base materials. Cross-linking agents ethylene glicol dimethacrylate (EGDMA), tetra (ethylene glycol dimetacry late) (TEGDMA) and poly (ethylene glycol dimethacrylate) (PEG 600 DMA) were added to the MM A monomer component in concentrations o f 0 - 30% according to the volume o f monomer liquid concentration. The polymer component was an unpigmented PMMA homopolymer. The comparison group of specimens was made by using the monomer liquid without a cross-linking agent. Specimens were produced in moulds according to conventional dental- flasking and curing procedures. Measurements o f Tg were determined by thermomechanical analysis using a Stanton Redcroft TMA, Model 790 (PL Thermal Sciences Ltd., Epsom, UK) Heating rates o f 5 °C/min and 10 °C/min were selected for this investigation. It was concluded that Tg values were highly dependent o f the heating rates used in thermomechanical analysis, being very significantly increased with the increase in heating rate. It was also concluded that the addition of a cross-linking agent would affect Tg o f denture base resins.
Keywords
poly(methyl methacrylate); glass transition; heating rate; cross-linking
Hrčak ID: 99348
URI
https://hrcak.srce.hr/99348
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