Naslov
Microhardness of conventional and bulk fill composite materials at different composite layer thicknesses light-cured with monowave or polywave curing unit

Autori
Repušić, Igor ; Par, Matej ; Skenderović, Hrvoje ; Klarić Sever, Eva ; Marović, Danijela ; Tarle, Zrinka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstracts of the 3rd International Congress of the School of Dental Medicine, University of Zagreb. U: Acta stomatologica Croatica. 2017 ; 51(3) / Tarle, Zrinka - Zagreb, 2017, 259-259

Skup
3rd International Congress of the School of Dental Medicine, University of Zagreb

Mjesto i datum
Zagreb, Hrvatska, 03.03.2017. - 04.03.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
microhardness ; coventional composite ; bulk fill composite ; layer thickness

Sažetak
Aim: To investigate the effect of monowave and polywave curing unit on microhardness of conventional and bulk fill composite materials, at different composite layer thicknesses. Materials and methods: Four conventional: Tetric Evo Ceram A2 (TECA2), Tetric Evo Ceram A3 (TECA3), Gradia direct posterior (GDP), Grandio A3 (GRA3) and four bulk fill composite materials: Tetric EvoCeram Bulk IVA (TECIVA), Tetric EvoCeram Bulk IVB (TECIVB), X-tra fil (XF) i Filtek Bulk Fill A2 (FBFA2) were investigated at specimen thicknesses of 0, 2, and 4 mm. Specimens (n=5 per group) were light-cured in Teflon molds for 30 s with either monowave or polywave curing unit. Microhardness was measured according to the Vickers method (VH), with three indentations using the loading of 100 g during 15 s. Mean microhardness values were statistically analyzed by a mixed model ANOVA. Results: Statistically significant difference (P<0.05) in VH values between the monowave and polywave curing unit in conventional composites at the same layer thicknesses was found in TECA2 at: surface (73.04/79.35), 2 mm (62.06/74.19), and 4 mm (51.94/65.55) ; and in TECA3 at surface (66.15/77.61). For bulk fill composites this difference was found in FBFA2 at thicknesses of 2 mm (100.36/105.53) and 4 mm (97.39/103.37). Statistically significant differences among the three measuring depths (0, 2, and 4 mm) were more frequently found in conventional than in bulk fill composite materials. Conclusion: For most of the investigated composite materials there were no significant differences in microhardness values between the monowave and polywave curing unit, except for the materials TECA2 and FBFA2.

Izvorni jezik
Hrvatski, engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA