Analysis of the Bond Strength of the FL Bond 2 Bioactive Adhesive System Associated with Ozonized Water on Enamel.

Resumo

The aim of this study was to investigate the potential of ozonated water as an oxidative cleaning solution to improve the bond strength of a bioactive adhesive system to enamel without prior etching. Forty bovine anterior tooth crowns were used and divided into four groups according to the cleaning solution and storage time: AD24h (cleaning with distilled water, 24 hours of storage), AO 24h (cleaning with ozonized water, 24 hours of storage), AD30D (cleaning with distilled water, 30 days of storage) and AO 30D (cleaning with ozonized water, 30 days of storage). All groups were subjected to the application of the bioactive adhesive system, followed by the manufacture of bioactive bulk fill flow resin composite cylinders (2x2 mm) on the crowns. After each storage period, the samples were evaluated using microshear tests and fracture analysis. The data was statistically analyzed using JAMOVI software, version 1.2.24. The results indicated that there was no statistically significant difference in most of the tooth thirds and groups evaluated, except in the cervical third after 24 hours, where ozonated water showed greater bond strength. This study suggests that ozonized water can potentially benefit the adhesion of bioactive adhesive systems to dental enamel, especially under specific storage and application conditions.