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Quintessence Publishing: Journals: JAD


The Journal of Adhesive Dentistry

Edited by Jean-François Roulet

ISSN (print) 1461-5185 • ISSN (online) 1757-9988


Fall 2000
Volume 2 , Issue 3

Pages: 176-173
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Light-curing Units, Polymerization, and Clinical Implications.

Davidson, Carel L.; De Gee, Anton J

Aorati comprehensive review of the techniques of light initiation of dental omposites with special attention to polymerization efficacy and shrinkage stress control Is presented. Optimal setting of an average-sized composite restoration requires a certain quantity of light energy. The amount of energy depends on the characteristics of the light source used and the time of irradiation. Swift conversion with high-energy lamps is proportionally accompanied by rapid hardening and could negatively affect the marginal integrity of the- adhesive restoration. However, preliminary stress measurements did not show an increase m the rate of stress development. Full conversion in the deeper areas of the reston may not be possible if defects occur in one or more of the various lamp components. Prolonging the irradiation time could reduce this risk. A regular check on the energy output of the light source is recommenced. Although the high-energy light sources with their extremely snort irradiation times should be used in a more critical way than the conventional light sources, they save a considerable amount of time and facilitate bond application, leading to better restorations where isolation control need not be optimal.

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