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Proceedings Paper

Surface hardness comparison of resins polymerized by argon, xenon, and conventional light sources
Author(s): Richard J. Blankenau; Scott Pace; G. Lynn Powell; Terry Wilwerding
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Paper Abstract

A great deal of discussion has taken place regarding how to properly polymerize light activated resins. Claims are made that effective testing can be made by using surface hardness tests on samples with various dental instruments. Although these tests would probably identify a material that had been very poorly polymerized it would not identify materials that were properly polymerized. The lack of consistent, reproducible forces and evaluation of the results make these test practically worthless. Surface hardness which is important clinically has value when combined with evaluation of the surface immediately adjacent to the light source and the surface adjacent to the tooth. Also immediate and 24 hour testing to allow for continued polymerization is helpful in determining how to achieve best results for our patients. A variety of new light sources have been introduced to dentistry with claims of faster and better polymerizations. The visible light units are also undergoing improvements to include built in meters to monitor light output. The purpose of this study was to evaluate the top and bottom surface hardness of a composite resin using the following light sources: argon, xenon, and two visible light sources.

Paper Details

Date Published: 23 April 1996
PDF: 3 pages
Proc. SPIE 2672, Lasers in Dentistry II, (23 April 1996); doi: 10.1117/12.238778
Show Author Affiliations
Richard J. Blankenau, Creighton Univ. (United States)
Scott Pace, Creighton Univ. (United States)
G. Lynn Powell, College of Dentistry/Univ. of Utah (United States)
Terry Wilwerding, Creighton Univ. (United States)


Published in SPIE Proceedings Vol. 2672:
Lasers in Dentistry II
Harvey A. Wigdor; John D. B. Featherstone; Joel M. White; Joseph Neev, Editor(s)

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