Metallic Ceramic Crown

Currently there have been advances using zirconia porcelain making all porcelain crowns a better choice all around.

Metallic ceramic crown. And in fact some types of ceramics have substantially inferior physical characteristics in terms of strength hardness brittleness and resistance to fracture. That means no metal is used so they are toxic free. They match your surrounding teeth in shape size and color. All ceramic or all porcelain dental crowns provide better natural color match than any other crown type and may be more suitable for people with metal allergies.

It should be recognized however that if esthetic considerations are paramount an all ceramic crown see chapters 11 and 25 has distinct cosmetic advantages over the metal ceramic restoration. The best option for front teeth restorations. All ceramic crowns can be used for. They are not as strong as metal crowns.

Both options should last an average of 10 to 15 years. The metal ceramic crown is indicated on teeth that require complete coverage and for which significant esthetic demands are placed on the dentist e g the anterior teeth. Porcelain or ceramic crowns provide the best and most natural look. Historically porcelain fused to metal crowns are more durable than all ceramic crowns because of the strong metal layer beneath the porcelain.

All ceramic s certainly don t have the same long term track record for longevity and durability as all metal and pfm crowns do. Generally full metal crowns require at least 0 5mm whist metal ceramic and full ceramic crowns require at least 1 2mm marginal integrity edit in order for the cast restoration to last in the oral environment and to protect the underlying tooth structure the margins between cast and tooth preparation need to be as closely adapted. A metal ceramic preparations on the maxillary premolars in conjunction with more conservative preparations on the molars. Note that by comparison considerable tooth reduction was needed on the premolars to accommodate metal ceramic restorations.