Naslov
Curing potential of experimental resin composites filled with bioactive glass: A comparison between Bis-EMA and UDMA based resin systems

Autori
Par, Matej ; Spanovic, Nika ; Mohn, Dirk ; Attin, Thomas ; Tauböck, Tobias T. ; Tarle, Zrinka

Izvornik
Dental materials (0109-5641) 36 (2020), 6; 711-723

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Bioactive glass 45S5 ; Experimental composites ; Bioactive composites ; Degree of conversion ; Light transmittance ; Depth of cure

Sažetak
TObjectives. To evaluate the degree of conversion, light transmittance, and depth of cure oftwo experimental light-curable bioactive glass (BG)- containing composite series based ondifferent resin systems.Methods. Experimental composite series based on either Bis-EMA or UDMA resin were pre-pared. Each series contained 0, 5, 10, 20, and 40 wt% of BG 45S5. Reinforcing fillers were addedup to a total filler load of 70 wt%. The degree of conversion was evaluated using Raman spec-troscopy, while light transmittance was measured using visible light spectroscopy. The depthof cure was estimated from the degree of conversion data and using the ISO 4049 scrapingtest.Results. Replacement of reinforcing fillers with BG can diminish the degree of conversion, light transmittance, and depth of cure. The effect of BG on the aforementioned propertieswas highly variable between the experimental series. While in the Bis-EMA series, the degreeof conversion was significantly impaired by BG, all of the composites in the UDMA seriesattained clinically acceptable degree of conversion values. The reduction of the degree ofconversion in the Bis-EMA series occurred independently of the changes in light transmit- tance. The UDMA series showed better light transmittance and consequently higher depthof cure than the Bis-EMA series. The depth of cure for all composites in the UDMA serieswas above 2 mm.Significance. While the Bis-EMA series demonstrated clinically acceptable curing potentialonly for 0–10 wt% of BG loading, an excellent curing potential in the UDMA series wasobserved for a wide range (0–40 wt%) of BG loadings.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA