Many people, especially women, in metal-ceramic crowns are allergic to the metal, so many patients out of these considerations, prefer all-ceramic crowns.
Dental doctors, all-ceramic dental biocompatibility, and can be completely ruled out an allergic reaction. As in all-ceramic dental crown material with porcelain, no metal, no black line so gingival edge, no heavy feeling, no swelling and bleeding gums, bad more do not dental equipment worry about the health effects of metal ions leaking.
Very low thermal conductivity of all-ceramic tooth, the pulp is more conducive to the protection, light weight, the patient more comfortable to wear. The U.S. Association of Clinical Research CRA clinical assessment that the side effects of all-ceramic crowns and other adverse reactions can be excluded, and with good cosmetic restoration effect.
Ordinary metal porcelain teeth, the gums more severe irritation, some people (especially women) to their allergies, causing gum swelling, bleeding, and even precious metals also allergic patients; all-ceramic is basically found no sensitive cases.
PFM is greater than the hardness of enamel, the teeth Root canal treatment on some of the problems can cause wear and tear on the jaw. The all-ceramic and enamel hardness of approximation, does not cause jaw tooth wear.
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