e.max
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IPS e.max combines high esthetic vitality with high performance. This innovative lithium disilicate ceramic fulfills the highest esthetic demands and unites state-of-the-art technology with exceptional user friendliness.
IPS e.max is a lithium disilicate glass ceramic with optimized translucency, durability and strength for full anatomical restorations. IPS e.max is available as a pressed and as a CAD/CAM milled technology. DAL presses all IPS e.max for maximum strength (400 MPa’s) and maximum margin refinement. Available in full contour monolithic or cut back and multi-layered, IPS e.max lithium disilicate ceramic is our choice for single anterior/posterior crowns, 3-unit anterior bridges (bicuspid forward), veneers and inlay/onlays as it truly mimics the light refraction and natural translucency necessary for outstanding esthetic appearance. With two times the strength of the original IPS Empress and the maximum benefits of a monolithic structure, IPS e.max is the material of choice for minimally invasive esthetic dentistry.
IPS e.max is a lithium disilicate glass ceramic with optimized translucency, durability and strength for full anatomical restorations. IPS e.max is available as a pressed and as a CAD/CAM milled technology. DAL presses all IPS e.max for maximum strength (400 MPa’s) and maximum margin refinement. Available in full contour monolithic or cut back and multi-layered, IPS e.max lithium disilicate ceramic is our choice for single anterior/posterior crowns, 3-unit anterior bridges (bicuspid forward), veneers and inlay/onlays as it truly mimics the light refraction and natural translucency necessary for outstanding esthetic appearance. With two times the strength of the original IPS Empress and the maximum benefits of a monolithic structure, IPS e.max is the material of choice for minimally invasive esthetic dentistry.
Monolithic Structure/StrengthWhen fabricated to full-contour or in a monolithic state, IPS e.max is the most robust ceramic system tested to date.* Even with micro-layering, this system eliminates the typical chipping and fracturing found in traditional veneered restorations. Failures in zirconia and PFM veneered restorations oftentimes are the result of a very weak 90 MPa porcelain material having chewing forces exerted upon it. The 1,000 MPa zirconia or metal substructure remains intact but the failure of the layering porcelain is ultimately a failure of the restoration. With monolithic lithium disilicate, the work of mastication is being done on a 360-400 MPa material so the strength is homogenous throughout the entire restoration.
Material Properties/IndicationsIPS e.max Monolithic – flexural strength of 360 MPa’s, indicated for single anterior/posterior crowns and inlays/onlays
IPS e.max Press – flexural strength of 400 MPa’s, indicated for single anterior/posterior crowns, 3-unit anterior bridgework (bicuspid forward), inlays/onlays and ultra-thin veneers
ContraindicationsNot recommended with a feather edge preparation, as it does not provide adequate room for porcelain build-up, or the trough/“gutter” shoulder because of scanning error potential
CementationTraditional cementation or adhesive bonding
Preparation GuidelinesThe recommended preparation guidelines for IPS e.max lithium disilicate are similar to other restorative systems. A 1.0 mm rounded shoulder or chamfer margin with rounded line angles, facial reduction of 1.5-2.0 mm, 1.0-1.5 mm lingual contact clearance and standard reduction of 1.5 to 2.0 mm for occlusal surfaces is the norm.
IPS e.max Press – flexural strength of 400 MPa’s, indicated for single anterior/posterior crowns, 3-unit anterior bridgework (bicuspid forward), inlays/onlays and ultra-thin veneers
ContraindicationsNot recommended with a feather edge preparation, as it does not provide adequate room for porcelain build-up, or the trough/“gutter” shoulder because of scanning error potential
CementationTraditional cementation or adhesive bonding
Preparation GuidelinesThe recommended preparation guidelines for IPS e.max lithium disilicate are similar to other restorative systems. A 1.0 mm rounded shoulder or chamfer margin with rounded line angles, facial reduction of 1.5-2.0 mm, 1.0-1.5 mm lingual contact clearance and standard reduction of 1.5 to 2.0 mm for occlusal surfaces is the norm.
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Durability Study
IPS e.max Lithium Disilicate is a high strength ceramic material with 360-400 MPa of flexural strength. When fabricated to full-contour or in a monolithic state, lithium disilicate is an extremely durable material.
Failures in zirconia veneered restorations are the result of a very weak 90 MPa porcelain material having chewing forces exerted upon it. The 1,000 MPa zirconia substructure remains in tact but the failure of the layering porcelain is ultimately a failure of the restoration.
With monolithic lithium disilicate, the work of mastication is being done on a 360-400 MPa material. This strength is homogenous throughout the entire restoration.
Several internal Ivoclar Vivadent tests have demonstrated that the monolithic lithium disilicate is incredibly durable and that the zirconia veneered restorations fail with less load and fewer chewing cycles.
In order to validate these findings, Ivoclar Vivadent called upon the expertise of New York University. The researchers at NYU are authorities on dental materials and have conducted numerous studies investigating the longevity and performance of a wide array of dental materials.
Failures in zirconia veneered restorations are the result of a very weak 90 MPa porcelain material having chewing forces exerted upon it. The 1,000 MPa zirconia substructure remains in tact but the failure of the layering porcelain is ultimately a failure of the restoration.
With monolithic lithium disilicate, the work of mastication is being done on a 360-400 MPa material. This strength is homogenous throughout the entire restoration.
Several internal Ivoclar Vivadent tests have demonstrated that the monolithic lithium disilicate is incredibly durable and that the zirconia veneered restorations fail with less load and fewer chewing cycles.
In order to validate these findings, Ivoclar Vivadent called upon the expertise of New York University. The researchers at NYU are authorities on dental materials and have conducted numerous studies investigating the longevity and performance of a wide array of dental materials.
