| Autor: |
Porko, C., Hietala, E.-L. |
| Předmět: |
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| Zdroj: |
Operative Dentistry; Mar/Apr2001, Vol. 26 Issue 2, p181-185, 5p, 1 Black and White Photograph, 1 Chart, 2 Graphs |
| Abstrakt: |
In vitro measurements were made to reveal the heat transference to the pulp chamber during light curing. Ten extracted human teeth were kept in physiologic saline at body temperature. In the first part of the study, five light curing exposures of 40 seconds were given to the occlusal surface of each tooth with a light curing unit. The temperature of the pulp was measured by a thermocouple probe that was inserted into the pulp through the apex. The maximal temperature rise was 2.2°C. Thereafter, standard occlusal cavities were prepared in all 10 teeth and filled with composite resin filling material in three parts. The dental adhesive was light cured for 20 seconds and each composite increment for 40 seconds. An extra cycle of 40 seconds was given when the cavity was filled as a post cure. The maximal temperature difference during the total procedure was 7.2°C. The heating effect of light curing should thus be taken into account when restorations are cured. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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