| 0522 Temperature Rise During Resin Polymerization with Various Light Curing Sources | ||
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Y. SENER1, G. TOSUN2, B. OZTURK2, and A. USUMEZ2, 1 Selcuk University, Konya, Turkey, 2 Selcuk Universitesi, Konya, Turkey Objectives: The aim of this study was to evaluate the temperature rise in three adhesive systems and restorative resins during the polymerization with two different light curing sources beneath dentin disks obtained from primary and permanent teeth. Methods: 60 primary and 60 permanent teeth dentin disks (with 1 mm thickness and 4 mm diameter) were obtained. Clearfil SE Bond+Clearfil AP-X, Compoglass F+AdheSE Bond and Dyract AP+Prime Bond NT restorative systems were polymerized using high intensity quartz tungsten halogen (HQTH) and quartz tungsten halogen (QTH) light curing sources. The temperature rise beneath dentin disks during photo-polymerization of adhesive resins and restorative materials were measured with J-type thermocouple. The data were analysed using three-way ANOVA, Tukey HSD, Independent samples t-test and Paired t-test. Results: The temperature rise beneath primary teeth dentin disks were lower than those of permanent teeth for adhesives (p<0.05). But, there were no statistically significant differences between dentin disks for restoratives (p>0.05). The temperature rise values produced by HQTH for both adhesives and restoratives were significantly higher than those induced by QTH (p<0.05). The mean values of temperature increases for adhesives were lower than those of restoratives (p< 0.05). The highest temperature rise for adhesives was observed during photo-polymerization of AdheSE Bond with HQTH (5.6° C) beneath permanent teeth dentin disks. The highest temperature rise was observed during photo-polymerization of Clearfil AP-X with HQTH (6.9° C) beneath permanent teeth dentin disks. Conclusion: In this study, polymerization with curing units characterized by HQTH caused higher temperature changes as compared to QTH. However, most of the temperature rises were not exceed critical value for the pulpal health. | ||
| Seq #50 - Dental Materials: Physical Properties, Non - Polymers 2:00 PM-3:30 PM, Saturday, 28 August 2004 Crowne Plaza Hotel SEDIR III | ||
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