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Evaluation of Direct and Indirect Methods of Repairing Fractured
APA 6th Edition
Piotrowski, P., Krysinski, Z. i Rztowski, S. (2002). Evaluation of Direct and Indirect Methods of Repairing Fractured. Acta stomatologica Croatica, 36 (3), 350-350. Preuzeto s https://hrcak.srce.hr/10243
MLA 8th Edition
Piotrowski, P., et al. "Evaluation of Direct and Indirect Methods of Repairing Fractured." Acta stomatologica Croatica, vol. 36, br. 3, 2002, str. 350-350. https://hrcak.srce.hr/10243. Citirano 19.01.2022.
Chicago 17th Edition
Piotrowski, P., Z. Krysinski i S. Rztowski. "Evaluation of Direct and Indirect Methods of Repairing Fractured." Acta stomatologica Croatica 36, br. 3 (2002): 350-350. https://hrcak.srce.hr/10243
Piotrowski, P., Krysinski, Z., i Rztowski, S. (2002). 'Evaluation of Direct and Indirect Methods of Repairing Fractured', Acta stomatologica Croatica, 36(3), str. 350-350. Preuzeto s: https://hrcak.srce.hr/10243 (Datum pristupa: 19.01.2022.)
Piotrowski P, Krysinski Z, Rztowski S. Evaluation of Direct and Indirect Methods of Repairing Fractured. Acta stomatologica Croatica [Internet]. 2002 [pristupljeno 19.01.2022.];36(3):350-350. Dostupno na: https://hrcak.srce.hr/10243
P. Piotrowski, Z. Krysinski i S. Rztowski, "Evaluation of Direct and Indirect Methods of Repairing Fractured", Acta stomatologica Croatica, vol.36, br. 3, str. 350-350, 2002. [Online]. Dostupno na: https://hrcak.srce.hr/10243. [Citirano: 19.01.2022.]
INTRODUCTION: The most common technology used in producing a fixed partial denture is firing porcelain to metal. The fracture of veneering material rarely occurs, although it is one of the most striking problems in daily practise.
PURPOSE: The purpose of this study was to evaluate the shear bond strength of composite to porcelain and metal by using two intraoral repair methods: direct and indirect.
MATERIAL AND METHODS: The direct method was performed by using Ceramic Repair System (Ivoclar, Lichtenstein) with and without sandblasting. The indirect method involved Co-Jet system (ESPE,Germany) and Rely X ARC (3M,USA) as luting agents. 180 specimens fabricated with feldspathic porcelain and Ni-Cr alloy
were divided into 3 groups: CR/0 (direct method of repair without sandblasting), CR/S (direct method of repair with sandblasting) and CJ (indirect method based on Co-Jet system). Each of them was divided into 3 subgroups of 20: porcelain (P), porcelain and metal (P/M) and metal (M). The 10 specimens were then subjected to a shear test in a mechanical testing machine at a crosshead speed of
0.5 mm/min. Mode of failure was recorded. Means and standart deviations of loads were calculated.
RESULTS: Tested groups exhibited the following values in megapascals: CR/0-P = 20.36 ± 3.05; CR/0-P/M = 19.45 ± 3.49; CR/0-M = 10.86 ± 4.1; CR/S-P = 18.21 ± 2.62; CR/S-P/M = 19.34 ± 1.76; CR/S-M = 9,54 ± 2.48; CJ-P = 19.85 ± 1.94; CJ-P/M = 19,78 ± 3.60; CJ-M = 13.56 ± 3.82. The mean fractured loads were significantly lower for metal subgroups than for porcelain and porcelain/ metal subgroups.
CONCLUSION: Higher shear bond strength is expected when porcelain was fractured without extensive metal exposure.
Posjeta: 698 *