Evaluation of different light-curing lamps |
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| Authors: | Maurizio Ferrante Paolo Dottore Morena Petrini Paolo Trentini Giuseppe Spoto |
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| Institution: | 1. Dental Materials, Department of Oral Dental Diseases, University of Chieti, Via Vestini 31, 66013, Chieti, Italy
2. Dental Materials, Department of Stomatology and Oral Sciences, University of Chieti, Via Vestini 31, 66013, Chieti, Italy
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| Abstract: | The aim of this study has been to evaluate light-curing composites polymerization quality carried out by halogen and new-diode lamps through the thermal analysis (TG?CDTA). Samples have been polymerized at 3?C20?C40?C60?s by halogen lamp and 1?C3?C6?C9?s by new-diode lamp. The TG/DTA analysis shows that different light-curing times affect the degree of conversion of the composite, since by increasing the curing time the quantity of the monomer that has not reacted (residual) decreases. The new-diode lamp, according to the manufacturer, can cure composite restorations in few seconds; but at the conditions used in this study, the samples cured by the halogen lamp at the standard times of exposure, compared to the samples cured in few seconds by the new-diode lamp, show a lower mass loss. |
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