Composite Photopolymerization: Temperature Increase According to Light Source and Dentin Thickness
Journal Title: Journal of Dentistry and Oral Implants - Year 2016, Vol 1, Issue 2
Abstract
When a composite resin restoration is photopolymerized, a considerable amount of heat can be produced, potentially causing pulpal injury. Objective: Evaluate the influence of the type of light source and remaining dentin thickness on the temperature increase in the pulp chamber while curing composite resin restorations. Material and Methods: Ninety-six tooth fragments obtained from bovine incisors were divided into groups/subgroups (n=12), according to the light source (LED and halogen light) and remaining dentin thickness (3.5, 3, 2, and 1mm). Class I cavities were prepared and restored with a composite resin. A temperature increase was obtained during photopolymerization of the adhesive and each composite increment. Data were analyzed using ANOVA and Fisher’s Test (α=5%). Results: LED promoted higher temperature increments when compared with the halogen light. Temperature levels were the lowest for 3.5mm-thick and the highest for 1mm-thick remaining dentin. Levels registered during the photopolymerization of each composite increment were superior for LED. Conclusions: Both light sources result in temperature increases above 5.5°C. Additionally, the remaining dentin thickness of 1mm promoted the largest temperature increase.
Authors and Affiliations
Regina Guenka Palma-Dibb, Cristiane SavarisSavaris, Michelle Alexandra Chinelatti, Fabrício Augusto de Lima, Luciano Bachmann, Juliana Jendiroba Faraoni
Keywords
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- EP ID EP332017
- DOI 10.14302/issn.2473-1005.jdoi-16-1080
- Views 151
- Downloads 0
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