Porcelain Fixed to Metal (PFM) have metal shell on which is fused a veneer of porcelain in high heat oven. The metal provides strong compression and tensile strength and porcelain gives the shade of natural teeth.
Zirconia Crown and Bridges
Zirconia crowns are highly biocompatible, and is suitable for patient with metal allergies or who would prefer to have metal-free restoration. Zirconia is metal-free, which prevents darkening around the gingival area. This eliminates the possibility of metal margins becoming exposed due to gum recession. The translucent nature of this material can transmit the colour of adjacent teeth and it is manufactured in a wide variety of shades, making it easy to accurately match the colour of the patient’s natural teeth. Using computer-aided-design and manufacturing process provide patients with a precise fit. Zirconia crowns are comfortable for patients, as they do not transmit hot and cold in the same way as conventional PFMs.