Effect of Preheating on the Physical Properties of Bis-GMA-Containing, Bis-GMA-Free and Glass Ionomer-Based Fissure Sealants
Abstract
This study aimed to evaluate in vitro the effects of preheating on the microhardness and surface roughness of fissure sealants with different compositions. Resin-based sealants (Clinpro, Fissurit FX), Bis-GMA-free resin-based sealants (Helioseal F Plus), and glass ionomer-based sealants (Riva Protect) were tested. Fifty-six cylindrical specimens (n=7) were prepared at room temperature and at 55 ± 1°C. Preheating was performed using Ena Heat. Microhardness was measured with a Vickers tester, and surface roughness was evaluated using an atomic force microscope. Data were analyzed using one-way ANOVA, Tukey’s post hoc, and t-tests. Preheating significantly increased microhardness in all groups (p
Fields of Study & Subjects
Dental materials and restorations
Endodontics and Root Canal Treatments
Dental Health and Care Utilization
Publication details
- Journal / source
- Odovtos - International Journal of Dental Sciences
- Volume
- 28
- Issue
- 3
- Pages
- 257–265
- Publication date
- 16 February 2026
- Language
- EN