Shear Bonding Strength and Thermal Cycling Effect of Fluoride Releasable/Rechargeable Orthodontic Adhesive Resins Containing LiAl-F Layered Double Hydroxide (LDH) Filler.

This study aims to investigate the shear bonding strength (SBS) and thermal cycling effect of orthodontic brackets bonded with fluoride release/rechargeable LiAl-F layered double hydroxide (LDH-F) contained dental orthodontic resin. 3% and 5% of LDH-F nanopowder were gently mixed to commercial resin-based adhesives Orthomite LC (LC, LC3, LC5) and Transbond XT (XT, XT3). A fluoroaluminosilicate modified resin adhesive Transbond color change (TC) was selected as a positive control.

Novel dental resin composites containing LiAl-F layered double hydroxide (LDH) filler: Fluoride release/recharge, mechanical properties, color change, and cytotoxicity.

Objectives: A novel LiAl-F layered double hydroxide (LDH) with a beneficial anions-exchangeable feature was developed for use as a fluoride reservoir. This study aims to investigate the fluoride release/ recharge capability of an LDH-contained dental resin composite and their effects on physical and biological properties.

Methods: 3% and 5% of LDH (R3, R5), wet-milled micro-scale LDH (R3W, R5W), or dry-milled nano-scale LDH (R3D, R5D) were added to a micro-hybrid flowable resin composite (RX).