IADR Abstract Archives
Wear Simulation of Flowable and Low-viscosity Bulk-fill Resin Composites
Objectives: The purpose of this study was to investigate simulated localized wear of flowable and low viscosity bulk-fill resin composites.
Methods: Three flowable resin composites: 1) Filtek Supreme Ultra Flow (FS) [3M Oral Care], 2) G-aerial Universal Injectable (GU) [GC]; and 3) Herculite XRV Ultra Flow (HX) [Kerr]; and three low-viscosity bulk-fill resin composites: 1) Filtek Bulk Fill Flowable Restorative (FB) [3M Oral Care], 2) SDR Flow+ (SF) [Dentsply Sirona] and 3) Tetric EvoFlow Bulk Fill (TE) [Ivoclar Vivadent] were used in this laboratory study. Twelve specimens of each resin composite were prepared in custom stainless steel fixtures. The resin composite specimens (4000 grit surface) were subjected to 400,000 cycles in a Leinfelder-Suzuki (Alabama) wear simulator (maximum load of 78.5N) using a stainless steel ball bearing (r=2.39mm) for localized wear testing in a water slurry of PMMA beads. Before the wear challenges, and after 400,000 cycles in the wear simulator, the specimens were profiled with a Proscan 2100 non-contact profilometer and wear [volume loss (VL) and maximum depth (MD)] was determined using AnSur 3D software with the before and after data sets. A one-way ANOVA and Tukey's post hoc test were used for data analysis.
Results: The ANOVA tests showed a significant effect (P<0.001) for material for both VL and MD. VL ranged from 0.021 (0.004) mm3 [GU] to 0.162 (0.039) mm3 [SF] and MD ranged from 84.5 (15.6) mm [GU] to 221.7 (34.4) mm [SF].
Conclusions: Localized wear simulation demonstrated significant differences in wear (volume loss and maximum depth) among six resin composites.
Methods: Three flowable resin composites: 1) Filtek Supreme Ultra Flow (FS) [3M Oral Care], 2) G-aerial Universal Injectable (GU) [GC]; and 3) Herculite XRV Ultra Flow (HX) [Kerr]; and three low-viscosity bulk-fill resin composites: 1) Filtek Bulk Fill Flowable Restorative (FB) [3M Oral Care], 2) SDR Flow+ (SF) [Dentsply Sirona] and 3) Tetric EvoFlow Bulk Fill (TE) [Ivoclar Vivadent] were used in this laboratory study. Twelve specimens of each resin composite were prepared in custom stainless steel fixtures. The resin composite specimens (4000 grit surface) were subjected to 400,000 cycles in a Leinfelder-Suzuki (Alabama) wear simulator (maximum load of 78.5N) using a stainless steel ball bearing (r=2.39mm) for localized wear testing in a water slurry of PMMA beads. Before the wear challenges, and after 400,000 cycles in the wear simulator, the specimens were profiled with a Proscan 2100 non-contact profilometer and wear [volume loss (VL) and maximum depth (MD)] was determined using AnSur 3D software with the before and after data sets. A one-way ANOVA and Tukey's post hoc test were used for data analysis.
Results: The ANOVA tests showed a significant effect (P<0.001) for material for both VL and MD. VL ranged from 0.021 (0.004) mm3 [GU] to 0.162 (0.039) mm3 [SF] and MD ranged from 84.5 (15.6) mm [GU] to 221.7 (34.4) mm [SF].
Conclusions: Localized wear simulation demonstrated significant differences in wear (volume loss and maximum depth) among six resin composites.