Depth of Cure and Contrast Ratio of BulkFill Composite Resins
Objectives: To measure and compare the depth of cure (DC) and contrast ratio (CR) of bulkfill resin composites. Methods: Materials: Group 1(control): Tetric EvoFlow® (A2, Ivoclar Vivadent); Group 2: Tetric EvoFlow® Bulk Fill (IVA, Ivoclar Vivadent); Group 3: Filtek™ Bulk Fill Flowable (A2, 3M ESPE); Group 4: Surefil® SDR® Flow+ Bulk Fill Flowable (A2, Dentsply Caulk); Group 5: SonicFill™ 2 (A2, Kerr). Six specimens were fabricated for each test group. Depth of Cure: Specimens were prepared using a 6x6x8mm mold and light cured (Bluephase-Style, Ivoclar Vivadent) per manufacturer’s recommendations. DC was measured by following ISO 4049:2009. CR specimens were fabricated using a 1mm thick circular Teflon mold. Baseline CIE L*a*b* and Yxy values were measured against white (W) and black backgrounds (B) (UltraScan VIS spectrophotometer). Measurements were taken prior to polymerization (U) and after polymerized (P). Contrast ratio measurements were determined (YB/YW). Data was analyzed with ANOVA and Tukey’s HSD post-hoc test (α=0.05). Results: Refer to Table 1: Results Conclusions: Within the limitations of this study, all of the bulk fill flowable composite materials achieved a depth of cure of 4mm. The contrast ratio of Tetric EvoFlow Bulk Fill increased significantly after polymerization when compared to other flowable bulk fill materials.
Division: IADR/AADR/CADR General Session
Meeting:2017 IADR/AADR/CADR General Session (San Francisco, California) Location: San Francisco, California
Year: 2017 Final Presentation ID:3821 Abstract Category|Abstract Category(s):Dental Materials 2:Polymer-based Materials
Authors
Magnuszewski, Tabetha
( Ivoclar Vivadent, Inc.
, Amherst
, New York
, United States
)
Nihlawi, Omar
( Ivoclar Vivadent, Inc.
, Amherst
, New York
, United States
)
Singhal, Shashikant
( Ivoclar Vivadent, Inc.
, Amherst
, New York
, United States
)
Financial Interest Disclosure: The authors are employed by Ivoclar Vivadent, Inc.