Chairside Restoration Guidelines

Points of Comparison	IPS Empress	IPS E.Max	Lava	Cercon
Ideal Applications	When esthetics is the primary objective.	When esthetics is the primary objective
Primary Indications	Single crowns, veneers, inlays, onlays	Single units & 3 unit bridges when most distal abutment is 2nd bicuspid	Single crowns
Primary Contraindications	Posterior bridges	Posterior bridges
Preparation Requirements	Shoulder margin design 1.0mm minimum at the margin *1.5-2.0mm reduction at incisal, facial lingual	Shoulder margin design 1.0mm minimum at the margin *1.5-2.0mm reduction at incisal, facial lingual	Shoulder
Cementation Guidelines	Adhesive bonding with dual cure bonding agent	Adhesive bonding with dual cure bonding agent	Bonding; luting composite
Flexural Strength	700 MPa after bonding	350-400 MPa prior to seating
Wear Characteristics	Comparable to natural enamel	Comparable to natural enamel
Years of Clinical Success	16	5
Restoration Composition	Leucite reinforced core	Lithium disillicate core
System Developer	Ivoclar NA	Ivoclar NA		DENTSPLY International
Planned Future Developments