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Rheology of Luting Cements

Rheology of Luting Cements L. LORTON,$ B. K. MOORE, M. L. SWARTZ, and R. W. PHILLIPS School Indiana 46202 Indiana University of Dentistry, Indianapolis, A rheometer has been developed to simulate the examine the rheology of dental cements. cement beneath a extrusion of luting from full Friendl simply used subjective evaluations realistic shear crown during seating using clinically as by clinicians ranking mixes too thick, too and rates. Five luting cements were studied, dif- thin, or just right. Such an evaluation would in behavior were ferences rheological illustrated. not provide information on the relative the These measurements demonstrate importance behavior of different cements during cemen- shear rate on of consideration of the effects of tation, since one with pseudoplastic charac- a cement viscosity when evaluating for optimal but in be teristics might appear thick reality clinical utilization. more readily extruded than a Newtonian J Dent Res 1980 (59)9:1486-1492, September liquid of comparable subjective thickness. The ADA test for establishing "testing Introduction. consistency" and also film thickness makes use of a parallel plate plastimeter.2 A of the or number of investigators have used the film Knowledge apparent "working" viscosity of dental luting cements is of great thickness measured at various time intervals importance to http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Dental Research SAGE

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References (9)

Publisher
SAGE
Copyright
Copyright © by SAGE Publications
ISSN
0022-0345
eISSN
1544-0591
DOI
10.1177/00220345800590090501
pmid
6931125
Publisher site
See Article on Publisher Site

Abstract

L. LORTON,$ B. K. MOORE, M. L. SWARTZ, and R. W. PHILLIPS School Indiana 46202 Indiana University of Dentistry, Indianapolis, A rheometer has been developed to simulate the examine the rheology of dental cements. cement beneath a extrusion of luting from full Friendl simply used subjective evaluations realistic shear crown during seating using clinically as by clinicians ranking mixes too thick, too and rates. Five luting cements were studied, dif- thin, or just right. Such an evaluation would in behavior were ferences rheological illustrated. not provide information on the relative the These measurements demonstrate importance behavior of different cements during cemen- shear rate on of consideration of the effects of tation, since one with pseudoplastic charac- a cement viscosity when evaluating for optimal but in be teristics might appear thick reality clinical utilization. more readily extruded than a Newtonian J Dent Res 1980 (59)9:1486-1492, September liquid of comparable subjective thickness. The ADA test for establishing "testing Introduction. consistency" and also film thickness makes use of a parallel plate plastimeter.2 A of the or number of investigators have used the film Knowledge apparent "working" viscosity of dental luting cements is of great thickness measured at various time intervals importance to

Journal

Journal of Dental ResearchSAGE

Published: Sep 1, 1980

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