Effect of ammonia-free silver fluoride and silver diammine fluoride on immediate microshear bond strength of resin-modified glass ionomer to demineralised primary tooth dentine

Description

A. Abedinzade Zare and co-authors asked whether two silver treatments used to arrest tooth decay interfere with how well a filling material sticks to softened dentine in baby teeth. Their 2026 laboratory study used extracted primary molars, artificially softened to mimic active decay, then treated with ammonia-free silver fluoride, standard silver diamine fluoride, or plain water before bonding.

The ammonia-free product weakened the bond sharply, reaching less than half the strength of the water-treated control in microshear testing. Standard silver diamine fluoride matched the control on average, though its results varied much more from specimen to specimen. Most failures happened at the glue line itself. The practical message is that the ammonia-free formulation may cut how well resin-modified glass ionomer fillings hold when placed right after treatment, so combined decay-arrest and filling protocols may need adjusting.

Catalog record

Source: https://europepmc.org/article/MED/PMC13593656