One of the greatest challenges facing the dental industry is achieving optimum esthetics with a metal-free restoration. While there are many all-ceramic systems offered today that are metal-free and strong, the marginal adaptation is far from that of traditional gold-palladium crowns. Quite often, the marginal adaptation is so loose that the crown falls off the die. Inlays and onlays have gaps that need to be filled with composite cement. Many dentists are reluctant to make all-ceramic crowns due to the fear of decay under the exposed margin and fear of crowns dislodging or breaking.
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IPS e.max is a modern and innovative system that covers the entire spectrum of all-ceramic indications ranging from thin veneers to 10-unit bridges. IPS e.max allows you to offer your patients impeccable esthetic restorations that are also characterized by high mechanical strength. Depending on the case at hand and the required strength, you can choose the most suitable all-ceramic material. Lithium disilicate (LS2) is ideal for fabricating single-tooth restorations. This innovative ceramic produces highly esthetic results and is 2.5 to 3 times stronger than other glass-ceramics. The material is either pressed or machined to the shape desired and is used to restore single teeth in the anterior and posterior region.
The zirconium oxide ceramic IPS e.max ZirCAD, however, is the material of choice for large restorations such as posterior bridges that are exposed to high masticatory forces. Zirconium oxide frameworks fabricated with IPS e.max ZirCAD are either veneered with IPS e.max Ceram or IPS e.max ZirPress is pressed onto them.
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The fact that a standardized veneering ceramic is used will benefit your combination work (lithium disilicate and oxide ceramics). Furthermore, Because of its high strength of 360 - 400 MPa, the IPS e.max crowns and bridges can be placed using not only adhesive, but also self-adhesive and conventional techniques.
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