Özet:

Introduction and Purpose: The aim of our study is to study the effects of different light sources and different light application times on polymerization degrees of bulk fill composite resins and traditional composite resins placed in layers by FTIR-ATR measurement. 4 different bulk fill composites (Filtek Bulk fill (3M ESPE), SDR (Dentsply), Tetric Evo Ceram Bulk fill (Vivadent), Venus Bulk fill (Heraeus)) and one condensable composite (Filtek Z250 (3M ESPE)) were used. Composite samples of 5 mm diameter and 4 mm height were prepared. In polymerizing composite materials, three different LED light sources (Elipar S10, Elipar Deepcure-S and Valo Cordless) were used with three different application times (20s, 30s, 40s). The conversion degrees of composite samples were measured with the FTIR spectroscopy (Perkin Elmer Spectrum One, MA, USA). Results: The conversion rate values of the samples of Filtek Z250, the control group in statistical assessment, were significantly higher compared to the other 4 groups (P=0.018). There was no significant difference between the conversion degrees of the light devices, while the line average is Valo> Elipar Deepcure-S> Elipar S10 (P=0.465). There was no significant difference between the conversion degrees according to the light application times. PROPOSITION AND RESULTS: As the traditional composite group shows the highest values, all bulk fill composite groups have shown sufficient conversion degrees values during each application period. The new generation of LED lighting devices are advantageous because they also provide sufficient conversion degree values with shortened application times.

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