Microhardness According to Surface, Distance and Time of Photopolymerization of a Bulk-Fill Resin: In Vitro Study
Abstract
This study compared Vickers microhardness (VHN) according to the surface, distance and time of photopolymerization (PP) of Tetric® N-Ceram Bulk Fill (TNCBF). An in vitro study was performed of 80 cylindrical samples (4 mm×4 mm) randomly distributed into 8 groups according to distance (0 and 3 mm) and time (10, 20, 30, 40 s) of LED PP 1470 mW/cm2. The depth of cure was adequate when the ratio of tripled VHN (Kg/mm²) between lower/upper surfaces was>0.8. Statistical analysis was performed with the three-way ANOVA test with post hoc Tukey and Tamhane (p
Fields of Study & Subjects
Dental materials and restorations
Endodontics and Root Canal Treatments
Epoxy Resin Curing Processes
Publication details
- Journal / source
- Odovtos - International Journal of Dental Sciences
- Volume
- 28
- Issue
- 3
- Pages
- 211–221
- Publication date
- 16 January 2026