Effect of dıfferent enamel surface preparatıons on shear bond strength, mıcroleakage and penetratıon of a bıoactive pit and fıssure sealant
- 1Department of Pediatric Dentistry, Faculty of Dentistry, Tokat Gaziosmanpaşa University
- 2Department of Restorative Dentistry, Faculty of Dentistry, Tokat Gaziosmanpaşa University
Abstract
Pit and fissure sealants (PFS) are effective in preventing occlusal caries. This study aims to evaluate the shear bond strength (SBS), microleakage, and penetration depth of the newly developed bioactive PFS (Biocoat™) and a fluoride-releasing resin-based PFS (Fissurit FX) under in vitro conditions. A total of 120 sound permanent molars were included. Specimens were assigned to four surface preparation (SF) groups (Acid; Acid + Bond; Sodium hypochlorite (NaOCl) + Acid; NaOCl + Acid + Bond) and two PFS materials subgroups (BioCoat™; Fissurit FX). SBS was evaluated after artificial aging. Microleakage and penetration were evaluated using stereomicroscopic and dye penetration methods. The SF (p = 0.001) and aging (p = 0.018) had significant effects on SBS, whereas no difference was found between materials (p = 0.773). The highest SBS value was obtained with NaOCl + Acid SF (23.14 ± 7.73 MPa) and the lowest with NaOCl + Acid + Bond (12.50 ± 2.88 MPa). The SBS value before aging was 19.5 ± 6.45 MPa, while after aging it was found to be 15.16 ± 7.68 MPa. The SF and material type showed no significant effect on microleakage and penetration (p > 0.05). Pretreatment with 5.25% NaOCl before acid etching improved SBS, whereas no statistically significant differences were observed in microleakage or penetration. These findings suggest a potential mechanical advantage under laboratory conditions without indicating overall clinical superiority.
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BibTeX
@article{nahir2026effect,
title = {{Effect of dıfferent enamel surface preparatıons on shear bond strength, mıcroleakage and penetratıon of a bıoactive pit and fıssure sealant}},
author = {Canan Bayraktar Nahir and Gülşah Tonga and Necibe Damla Şahin},
journal = {Scientific Reports},
year = {2026},
month = jul,
doi = {10.1038/s41598-026-63260-1},
url = {https://doi.org/10.1038/s41598-026-63260-1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Effect of dıfferent enamel surface preparatıons on shear bond strength, mıcroleakage and penetratıon of a bıoactive pit and fıssure sealant
AU - Canan Bayraktar Nahir
AU - Gülşah Tonga
AU - Necibe Damla Şahin
PY - 2026
DA - 2026/07/01
JO - Scientific Reports
DO - 10.1038/s41598-026-63260-1
UR - https://doi.org/10.1038/s41598-026-63260-1
AB - Pit and fissure sealants (PFS) are effective in preventing occlusal caries. This study aims to evaluate the shear bond strength (SBS), microleakage, and penetration depth of the newly developed bioactive PFS (Biocoat™) and a fluoride-releasing resin-based PFS (Fissurit FX) under in vitro conditions. A total of 120 sound permanent molars were included. Specimens were assigned to four surface preparation (SF) groups (Acid; Acid + Bond; Sodium hypochlorite (NaOCl) + Acid; NaOCl + Acid + Bond) and two PFS materials subgroups (BioCoat™; Fissurit FX). SBS was evaluated after artificial aging. Microleakage and penetration were evaluated using stereomicroscopic and dye penetration methods. The SF (p = 0.001) and aging (p = 0.018) had significant effects on SBS, whereas no difference was found between materials (p = 0.773). The highest SBS value was obtained with NaOCl + Acid SF (23.14 ± 7.73 MPa) and the lowest with NaOCl + Acid + Bond (12.50 ± 2.88 MPa). The SBS value before aging was 19.5 ± 6.45 MPa, while after aging it was found to be 15.16 ± 7.68 MPa. The SF and material type showed no significant effect on microleakage and penetration (p > 0.05). Pretreatment with 5.25% NaOCl before acid etching improved SBS, whereas no statistically significant differences were observed in microleakage or penetration. These findings suggest a potential mechanical advantage under laboratory conditions without indicating overall clinical superiority.
SN - 2045-2322
ER -