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Palma Dental Laboratory
37 Industrial Park Road
Plymouth, MA 02360
781-936-8718 or 508-591-7113
Toll free: 800-924-6025
Fax: 781-936-8719

Email: info@palmadentallaboratory.com

478 Torrey Street #7
Brockton, MA. 02301
Phone: 508-588-8466
Fax: 508-588-3692

Email: office@palmadentallabs.com

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Porcelain Restoration Selection Guide

Points of Comparison IPS Empress Esthetic IPS e.Max LAVA PFM Full Contour Zirconia
Goals Esthetics, translucency, metal-free Esthetics, metal-free, strength Metal-free, strength, esthetics Strength, cost variety Metal-free, strength
Primary Applications Veneers, crowns, inlays & onlays Veneers, crowns, inlays/onlays Single crowns, & 3-6 unit bridges Single crowns through long span bridges Crowns and bridges
Preparation Requirements Shoulder margin design 1.0 mm minimum at the margin, 1.5-2.0 mm reduction at incisal/occlusal, facial & lingual Shoulder margin design 1.0 mm minimum at the margin, 1.5-2.0 mm reduction at incisal/occlusal, facial & lingual Deep chamfer design with minimum .8mm gingival reduction, 1.5- 2.0mm reduction at incisal/occlusal & facial+++ Any margin design with 1.0-1.5 mm reduction for color, 1.5-2.0 mm reduction at incisal/occlusal and facial Shoulder preparation preferred, feather edge is okay Clearance similar to full cast gold preps. - 1.0 mm is ideal, 0.5 mm is acceptable.
Cementation Guidelines Adhesive bonding with dual cure bonding agent Adhesive bonding or conventional cementation conventional or translucent adhesive Conventional cementation Conventional cementation
Flexural Strength 90-150 MPa before and 700 MPa after bonding 350-400 MPa prior to seating. Material is 2.5x's stronger empress 1100-1300 MPa 1200-1400 MPa 900-1300 MPa
Enamel Wear Comparable to natural enamel Comparable to natural enamel Depends on type of veneering porcelain Depends on type of veneering porcelain Ongoing research
Restoration Composition Lucite reinforced glass Lithium disilicate Zirconium oxide substructure with LAVA Ceram porcelain Alloy substructure with feldspathic porcelain Monolithic zirconia