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Title

Marginal integrity of resin composite restorations restored with PPD initiatorcontaining resin composite cured by QTH, monowave and polywave LED units

Authors
Betancourt, Francisco
Submitted to Dental Materials Journal. 2016
Description 7
Abstract This study evaluated the infl uence of curing devices on marginal adaptation of cavities restored with self-etching adhesive containing CQ and PPD initiators and hybrid composite. Twenty-four class V (3 groups, n=8) with margins located on enamel and dentin were restored with Clearfi l S3 Bond and Clearfi l APX PLT, light-cured with a monowave LED, multiwave LED and halogen light-curing unit (LCU). Marginal adaptation was evaluated with SEM before/after thermo-mechanical loading (TML). On enamel, signifi cantly lower % continuous margins (74.5±12.6) were found in group cured by multiwave LED when compared to monowave LED (87.6±9.5) and halogen LCU (94.4±9.1). The presence of enamel and composite fractures was signifi cantly higher in the group light-cured with multiwave LED, probably due to an increased materials’ friability resulted from an improved degree of cure. The clinician should aware that due to a distinct activation of both initiators, marginal quality may be infl uenced on the long-term.
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Research group Groupe Krejci Ivo (médecine dentaire) (240)
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BORTOLOTTO IBARRA, Tissiana, BETANCOURT, Francisco, KREJCI, Ivo. Marginal integrity of resin composite restorations restored with PPD initiatorcontaining resin composite cured by QTH, monowave and polywave LED units. Submitted to: Dental Materials Journal, 2016. https://archive-ouverte.unige.ch/unige:89694

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Deposited on : 2016-12-01

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