Bond strength of restorative materials to hydroxyapatite inserts and dimensional changes of insert-containing restorations during polymerization

Highlights • HAP inserts reduced polymerization shrinkage of the insert-containing restorations. • ‘Total-etch’ approach is recommended for adhesive bonding of composites to HAP. • Micromechanical interlocking is the major adhesion mechanism. • A universal composite is recommended to bond HAP insert...

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