Metal-free all-ceramic dental crown of the inner lining, all-ceramic restorations and the general nature of porcelain have a different method of making all-ceramic restorations penetration divided into ceramic, heat-pressed ceramic, cast glass, ceramic, ionization deposition ceramics, CAD / CAM all-ceramic dental computer, composite machining penetration coated or coated composite machining and other methods. All-ceramic dental restoration, compared with ordinary porcelain teeth, what a unique advantage?
First, the permeability of which is difficult to complete the general effect of PFM, because the metal in the crown of the opaque, opaque porcelain covered metal substrate required, to a certain extent, will affect the restoration of transparency, making the porcelain dental equipment beauty, there are clear chalk color, gloss and real teeth form a gap. If an ordinary metal-ceramic, tooth neck will result in "black line" effect appearance. All-ceramic restorations is with a good transparency and refractive index of the solution to this chronic problem of beauty.
Second, the biological compatibility of metals within the crown were significantly higher than the biological compatibility of bio-ceramic compatibility is low. Porcelain dental all-ceramic restorations in the oral cavity adaptability than any other metal porcelain teeth. Do not worry about metal allergies and other issues. Metal allergy can cause gum swelling, bleeding and so on; all-ceramic is basically found no sensitive cases. And a good all-ceramic prevent gum discoloration, oxidation of base metals in the oral cavity to form a gray oxide, scattered in the deposition to the edge of the gums, causing gum grayed out, affect the appearance. All-ceramic restorations completely solve this problem.
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