What Is Metal Ceramic Restoration

Generally full metal crowns require at least 0 5mm whist metal ceramic and full ceramic crowns require at least 1 2mm marginal integrity.

What is metal ceramic restoration.

Shoulder need more space for the porcelain chamfer or knife edge. Porcelain and metal vs. Due to improvements in materials and the sustained demand for esthetic and metal free restorations the use of all ceramic restorations has become ubiquitous. Posted january 14 2015 in porcelain crowns tooth restoration.

Metal ceramic bond most important requirement for good long term performance. For the clinical longevity metal ceramic prostheses must have satisfactory bond strength between. What is your finish line design for a metal ceramic crown in the. Metal ceramic and all ceramic restorations.

Another type is known as porcelain fused to metal which is used to provide strength to a crown or bridge. 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. The most common clinical failure in metal ceramic restoration is at the ceramo metal interface. Metal for coping of metal ceramic restoration the alloy must have a high melting temperature to withstand high firing temp of porcelain.

1 although there is a plethora of all ceramic systems many are becoming obsolete almost as quickly as they were introduced due to the distinct advantages of lithium disilicate and zirconia. The wide range of clinical applications for. The biggest advantage of the ceramic restoration is its permanent aesthetic quality. What are the indications of doing a sub gingival tooth prep.

However tooth preparation for a full coverage metal ceramic restoration is destructive of tooth substance figure 10 3 as clearance needs to be created not only for the metal but also for the opaceous ceramic and the dentine and enamel effect veneering. Several factors can have an impact on a patient s choice between porcelain fused to metal crowns or all porcelain crowns for tooth restoration. The margin of a metal ceramic restoration is to be hidden in the gingival sulcus. These include your concern for aesthetics whether or not you grind your teeth and the health of your natural teeth.

These restorations are very strong durable and resistant to wear because the combination of porcelain and metal creates a stronger restoration than porcelain used alone.