Changes in the Temperature of a Dental Light-Cured Composite Resin by Different Light-Curing Units
In: Laser physics, Jg. 18 (2008), Heft 8, S. 1003-1007
academicJournal
- print, 25 ref
Zugriff:
The purpose of this study was to evaluate the temperature increase during the polymerization process through the use of three different light-curing units with different irradiation times. One argon laser (Innova, Coherent), one halogen (Optilight 501, Demetron), and one blue LED (LEC 1000, MM Optics) LCU with 500 mW/cm2 during 5, 10, 20, 30, 40, 50, and 60 s of irradiation times were used in this study. The composite resin used was a microhybrid Filtek Z-250 (3M/ESPE) at color A2. The samples were made in a metallic mold 2 mm in thickness and 4 mm in diameter and previously light-cured during 40 s. A thermocouple (Model 120-202 EAJ, Fenwal Electronic, Milford, MA, USA) was introduced in the composite resin to measure the temperature increase during the curing process. The highest temperature increase was recorded with a Curing Light 2500 halogen LCU (5 and 31°C after 5 and 60 s, respectively), while the lowest temperature increase was recorded for the Innova LCU based on an argon laser (2 and 11°C after 5 and 60 s, respectively). The temperature recorded for LCU based on a blue LED was 3 and 22°C after 5 and 60 s, respectively. There was a quantifiable amount of heat generated during the visible light curing of a composite resin. The amount of heat generated was influenced by the characteristics of the light-curing units used and the irradiation times.
Titel: |
Changes in the Temperature of a Dental Light-Cured Composite Resin by Different Light-Curing Units
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Autor/in / Beteiligte Person: | RASTELLI, A. N. S ; JACOMASSI, D. P ; BAGNATO, V. S |
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Zeitschrift: | Laser physics, Jg. 18 (2008), Heft 8, S. 1003-1007 |
Veröffentlichung: | New York, NY: Springer, 2008 |
Medientyp: | academicJournal |
Umfang: | print, 25 ref |
ISSN: | 1054-660X (print) |
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