A lot of dentists face the issue of composite restorations in non-carious Class V lesions (like abrasion, erosion, and abfraction) falling out shortly after placement. Here’s a quick guide to help improve retention:

1. Roughen the Axial Wall: Use a bur to remove the sclerotic dentin layer by roughening the axial wall.


2. Choose Etch & Rinse Adhesives: Avoid self-etch adhesives here; they don’t bond as well in these cases.


3. Extend the Etching Time: Increase etching time slightly beyond the usual duration.


4. Blot Dry the Dentin: Instead of using the air syringe to dry after acid etching, use blot drying to avoid over-drying.


5. Apply Multiple Layers of Primer: Use a microbrush with strong rubbing force on the dentin to apply multiple layers of the primer.


6. Increase Light Curing Time for Bond: Cure for a bit longer than the manufacturer’s instructions for added durability.


7. Add a Small Retention Groove: Use a fissurotomy bur to make a tiny groove along the junction of the gingival floor and axial wall from mesial to distal.


8. Opt for Flowable Composite: For the final restoration, go with a flowable composite to better handle the flexion forces in this area due to its flexibility.



Try these tips, and may they save you from the frustration of failed restorations!



How to Improve Retention of Composite Restorations in Non-Carious Class V Lesions