A lithium disilicate (e.g., e.max) all-ceramic crown is best bonded using:

Lithium disilicate is an etchable glass-ceramic; etching the intaglio with hydrofluoric acid and applying silane creates micromechanical and chemical bonding for adhesive resin cement, maximizing retention and strength, especially for minimal preparations and veneers.Other options: Zinc phosphate and untreated glass ionomer give weaker non-adhesive bonds; eugenol temporary cement interferes with resin polymerization and is not definitive.Key exam takeaway: Etchable glass-ceramics (lithium disilicate) get HF etch + silane + resin cement; zirconia (non-etchable) gets sandblasting + an MDP-containing resin cement.