Crown & Bridge
A crown is a type of dental restoration which completely caps or encircles a tooth. Crowns are often needed when a large cavity threatens the ongoing health of a tooth. They are typically bonded to the tooth using a dental cement. Crowns can be made from many materials, which are usually fabricated using indirect methods. Crowns are often used to improve the strength or appearance of teeth. There are a variety of options available to dentists to achieve their patients desired results.
In addition to being aesthetically pleasing, dental veneers can also serve a functional purpose by protecting the surface of a damaged tooth. In some cases, veneers may replace the need for a dental crown, eliminating the need for more invasive tooth preparation.
Metal Free Ceramic Crowns
For those people who have allergies to certain metals or who want the ultimate in aesthetics ie. no possibility of even a fine metal line at the margin, then metal-free ceramic crowns are the solution.
Their preparation is essentially the same but the technician uses highly sophisticated materials and techniques to create the crown. They are as strong and as durable as the traditional bonded metal crowns. Lava Zirconia and e.max would be the ideal options
|The Empress/e.max system is superficially similar to a lost-wax technique in that a hollow investment pattern is made, but the similarities stop there. A specially designed pressure-injected leucite-reinforced ceramic is then pressed into the mold by using a pressable-porcelain-oven, as though the final all-ceramic restoration has been "cast." The Empress/e.max can be utilized for anything the lost-wax technique can be used for, in addition to veneers (which would not be made of cast metal).|
|3M ESPE Lava, is a CAD/CAM based method which produces a crown by overlaying a very durable ceramic coping of zirconia, referred to as a "core", with 3M ESPE Lava Ceram porcelain. Introduced in 2002, Lava can now be used to produce life like crowns, bridges and veneers.|
|Press on Metal crowns have a substructure of a metal alloy (precious or non-precious metal) to which porcelains have been pressed at high temperature to create an exceptionally strong restoration. The dental technician adds many different layers of porcelain and colour to make a perfect a match as possible to the adjacent teeth in your mouth.|