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Metal free crowns

crown is a natural-looking tooth replacement made of porcelain that is functional and cosmetic. A crown results in restoration of decayed and cracked or weak teeth.

Also called caps, crowns are natural-looking covers that fit snugly over teeth to conceal cracked, badly discoloured, injured, or chipped teeth. Crowns minimize physical discomfort and provide support to damaged teeth. Ultimately, crowns can improve the overall appearance of your smile while making your teeth more resistant to injury. They offer superior aesthetics, as well as strength that is comparable, if not better than, traditional porcelain-fused-to-metal, or PFM, restorations. Preparation techniques for many all-ceramic systems are similar to traditional PFM crown and bridge techniques, issue sensitivity can be a common issue with PFM crowns and bridges. Base-metal crowns contain nickel, which can cause an allergic reaction in many people, especially women. Restorations that use non-precious metals can sometimes result in gum tissue that is purplish in appearance, and some patients experience irritation and/or gingival recession. Alternatively, zirconia is a biocompatible material and has been used with great success in other medical applications, for example, hip replacements, for the past 20 years. Similarly, zirconia results in excellent tissue response when used in the mouth - gum tissue appears healthy and is pink in color. Further, the tissue does not pull away from the material, which can occur with traditional PFM restorations.

 

Dental crowns can also be used for purely aesthetic reasons -to change the shape or appearance of the teeth. Whatever the situation we have the experience and knowledge to produce superior results. The new metal-free crowns eliminate the ugly black line you may have seen next to the gum line on older crowns. Most people can recognize a PFM crown by the substructure that is often visible in the patient's mouth, appearing as a thin, gray line at the margin of the crown. All-ceramic crowns offer excellent marginal fit and eliminate gray margins. PFM crowns do not transmit light through the crown, resulting in a somewhat dull tooth appearance. Zirconia ceramic substrates, on the other hand, allow for light transmission, so the entire tooth and the surrounding tissue are illuminated and lifelike in appearance.