Composite Resine in the last 10 years – Literature review. Part 3: Photoactivation and Degree of Conversion

Paulo Vinícius Soares, Amanda Monise Dias Silva, Amanda Ribeiro Wobido, Bruno Rodrigues Reis, Igor Oliveiros Cardoso

Introduction: This is the third article of a series of six manuscripts about composite resins in the last 10 years. Since composite resin is widely used, the aim of this review was to analyze the relationship between different types of light-curing units (LCU) and the composition of several composite resins. Methods: A search in PubMed database was performed using the MeSHs photoactivation and composite resins. The articles were chosen according to relevance and publishing date from 2008 to 2018. After completely reading the articles, 28 were select for this literature review. Results: The results were distributed in two tables. The first table presents the data of light-curing associated with degree of conversion of commercial composites. The best result was for the monowave and poliwave LED light-curing units, since most composites present camphorquinone (CQ) as a photoinitiator. The second table relates the spectrum of light emitted by LCU with the photoinitiators of experimental composites and their degree of conversion. CQ was the photoinitiator that showed the best results, as well as halogen LCU and poliwave LED. Conclusions: The best results of degree of conversion are related to the use of photoinitiators compatible with the wavelength emitted by LCU used.

Keywords: Light curing units. Degree of conversion. Photoactivation. Photoinitiators. Composite resins.

How to cite: Soares PV, Silva AMD, Wobido AR, Reis BR, Cardoso IO. Composite resine in the last 10 years - literature review. Part 3: photoactivation and degree of conversion. J Clin Dent Res. 2019 May-Aug;16(2):97-112. DOI: https://doi.org/10.14436/2447-911x.16.2.097-112.oar

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