Mecron Plus AC. Indications: Luting of: - Porcelain-fused-to-metal crowns, bridges on hard dental tissue, and on cores rebuilt with amalgam, composites or glass ionomer materials. - Metal inlays, onlays, crowns, and bridges. - Root posts. - All-ceramic crowns manufactured from silicate ceramic, zirconium dioxide-only or alumina-only ceramic cores. - Orthodontic appliances.