Naslov
Effect of Cyclic Fatigue Conditions on Composite Core Build-up Materials

Autori
Čimić, Samir ; Bilić Prcić, Maja ; Jukić Krmek, Silvana ; Tashkandi, Abeer ; Fan, Yuwei ; Nathanson, Dan ; Miletić, Ivana

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

Izvornik
IADR/AADR/CADR General Session - online / - : IADR/AADR/CADR, 2019, 3660-3660

Skup
97th General Session IADR/AADR/CADR

Mjesto i datum
Vancouver, Kanada, 19.06.2019. - 22.06.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
flexural strength ; compressive strength ; composite core build up materials

Sažetak
Objectives: The purpose of this in vitro study was to compare flexural and compressive strength of composite core build up materials after cyclic fatigue conditions. Methods: Four different resin composite materials specifically intended for core build-ups were selected for this study: A: everX Posterior, GC ; B: Clearfil Core, Kuraray ; C: MultiCore Flow, Ivoclar Vivadent ; D: Unocore DC, Dental Directory. Bar shaped specimens (2x2x25 mm), were fabricated for flexural testing. For the compressive strength test specimens were fabricated in cylindrical shape (4x6 mm). n=10 for each material group. Fatigue duration was 5000 cycles (frequency 1 Hz) for each material. Flexural strength was determined using 3 point bending test with 20 mm span while compressive strength was tested on the cylindrical specimens. Statistical analysis was performed using one-way ANOVA and Tukey- Kramer post hoc test. Results: Flexural strength values were: 97.2±9.8 MPa (Clearfil Core), 124.7±15.0 MPa (everX Posterior), 97.8±16.6 MPa (MultiCore Flow) and 107.9±19.8 MPa (Unodent DC). Compressive strength values were 181.5±22.5 MPa (Clearfil Core), 246.4±16.7 MPa (everX Posterior), 233.8±19.7 MPa (MultiCore Flow) and 204.7±56.5 MPa (Unodent DC). Statistical analysis showed differences between groups in compressive strength (P<0.01) and flexural strength values (P<0.01). EverX Posterior had higher flexural strength values compared to Clearfil Core and MultiCore Flow. EverX Posterior had higher compressive strength values compered to Clearfil Core and Unodent DC, while MultiCore Flow had higher values than Clearfil Core. Conclusions: Composite core build up materials have significant differences in compressive and flexural strength values which should be considered. With respect to compressive and flexural strength, everX Posterior showed most favorable results.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA