Bioactive Restorative Systems and Self-Adhesive Bonding

Background: Bioactive, ion-releasing restorative materials have emerged as a promising solution for improving dentin adhesion and long-term restoration durability. Self-adhesive materials simplify bonding procedures by eliminating the need for pre-treatment adhesives, potentially enhancing clinical outcomes. This study aimed to evaluate the microshear bond strength (μSBS) and interfacial micromorphology of contemporary bioactive restorative systems bonded to dentin. Methods: Eighty freshly extracted human molars were prepared and divided into four groups based on restorative material: Surefil One (self-adhesive bulk-fill composite), Cention Forte (alkasite-based material) with and without primer, and Fuji II LC (resin-modified glass ionomer, control). Specimens underwent immediate (24-hour) and delayed (6-month artificial saliva storage) μSBS testing using a universal testing machine. Failure modes were analyzed with stereomicroscopy, and scanning electron microscopy (SEM) was used to assess the restoration-dentin interface. Results: Cention Forte with primer exhibited the highest immediate and delayed μSBS values, significantly outperforming all other materials (p

Adhesion · Adhesive · Bond strength · Composite material · Dentin · Dentin Bonding Agents · Durability · Dental materials and restorations · Dentistry · Engineering Technology and Methodologies · Materials Science · Medicine