Significance of immediate dentin sealing and flowable resin coating reinforcement for unfilled/lightly filled adhesive systems

Background Immediate dentin sealing implies applying an adhesive system to directly after tooth preparation, before impression. The technique is universal (inlays, onlays, veneers, crowns) and well documented clinically experimentally. Different types of bonding agents (DBAs) are available on the market. Major differences lie in thickness hybrid layer overlaying resin (filled vs. unfilled/lightly filled adhesives). Objective objective this work provide precise clinical instructions present new experimental data about bond strength five DBAs (Optibond FL, Scotchbond MP, Single Bond Plus, Clearfil SE Bond, Universal) used conventionally (dentin sealed at time restoration delivery) or with immediate sealing, as additional flowable coating. Methods Seventy-five human molars were selected, restored/tested according microtensile method. Fifteen groups (n=5) obtained from combination three application modes: delayed Results It appears that was confirmed significantly improve all tested adhesives. use a coating reinforcement increased adhesives (from 233% increase for ScotchBond up 560% Bond) maintained performance 3-step golden standard adhesive. Optibond FL (52.51 MPa) without (54.75 (45.64 provided best results. Clinical Significance original (IDS) DBA. With adhesives, it suggested reinforce IDS This seems especially paramount simplified systems protect thin interface oxygen inhibition preserve during predelivery cleaning preparation. composite encouraged more predictable bonding.