Bulk-Fill Direct Restorative Materials: An In Vitro Assessment of Their Physio-Mechanical Properties

Bulk-fill restorative material has gained popularity in clinical practice, due to their perceived timesaving aspect. Objective was compare the properties of bulk-fill direct materials. Filtek Z350 (CR), One Bulk Fill Restorative (BF), Fuji IX and EQUIA Forte (EF) were compared. Thirty specimens from each prepared according ISO 4049 for three-point flexural strength. Elastic moduli hardness (n = 20) evaluated using nanoindentation. Depth cure (DC) measured BF at three different depths (2, 3, 4 mm) two irradiation times (20 40 s). Wear testing carried out periods (3, 6, 12 month(s)). All stored 37 °C water 24 h prior testing. Results one-way ANOVA followed by a post hoc Bonferroni test (p < 0.05). CR showed significantly higher strength than other groups 0.05), highest Weibull modulus found CR. sufficient DC with least 85%, all thicknesses. also had high level translucency EF IX. Significant differences among materials except between EF. While tested are suitable use clinically, have superior GIC based bulk-fill.