Fornaini C, Lagori G, Merigo E, Rocca JP, Chiusano M, Cucinotta A. 405 nm diode laser, halogen lamp and LED device comparison in dental composites cure: an "in vitro" experimental trial.
Laser Ther 2015;
24:265-74. [PMID:
26877591 PMCID:
PMC4751091 DOI:
10.5978/islsm.15-or-16]
[Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 10/21/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND AIMS
A 405 nm diode laser is indicated for composite materials polymerizing, thanks to the recent evolution in their compositions, absorbing in blue part of the spectrum. The purpose of this research was to evaluate its performance on two different kinds of composite resins.
MATERIALS AND METHODS
Two different composites were polymerized with a traditional halogen lamp, a LED device and a 405 nm diode laser. The depth of the cure, the volumetric shrinkage, and the degree of the conversion (DC%) of the double bond during the curing process were measured. One-way ANOVA test, Kruskal-Wallis tests, and Dunn comparison tests were used for statistic analysis.
RESULTS
Regarding the depth of polymerization, the laser had the worst performance on one composite while on the other, no significant difference with the other devices was observed. The volumetric shrinkage showed that laser produced the lowest change in both of the composites. The DC% measure confirmed these findings.
CONCLUSIONS
Based on the results of this preliminary study, it is not possible to recommend the 405 nm diode laser for the polymerization of dental composites.
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