Tooth Preparation For Metal Ceramic Crown

The preparation for a metal ceramic crown requires significant tooth reduction to provide sufficient space for the restorative materials.

Tooth preparation for metal ceramic crown.

To be successful a metal ceramic crown preparation requires more tooth reduction wherever the metal substructure is to be veneered with dental porcelain. The need for superior re the preparation for a. 11 tooth preparation for all ceramic restorations all ceramic inlays onlays veneers and crowns are some of the most esthetically pleasing prosthodontic restorations. All ceramic crowns can be used for.

Extensive tooth destruc tion as a result of caries trauma or existing previ ous restorations that precludes the use of a more disadvantages conservative restoration. Historically attempts to veneer metal restorations with porcelain had several problems. Because there is no metal to block light transmission they can resemble natural tooth structure better in terms of color and translucency than can any other restorative option. When preparing a tooth a systematic and organized approach helps to ensure the prep is correctly shaped.

Tooth preparation for metal ceramic crowns. A video by crowns bridges depart. Ceramic preparation is comparable to that of prepar typical indications are similar to those for ing a posterior tooth for a complete cast crown. 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.

The metal should be 0 3 to 0 5 mm thick if it is a noble metal alloy while a metal coping made of the more rigid base metal alloys can be thinner to 0 2 mm. The preparation must be designed to provide the correct support for the porcelain along its entire incisal edge unless an all ceramic crown with a strong core i e. Consequently much tooth reduction is necessary and the metal ceramic preparation is one of the least conservative of tooth structures fig. Most widely used.

To achieve better esthetics the facial margin of an anterior restoration is often placed subgingivally which increases the potential for periodontal disease. Metal ceramic crown preparation 2. Complete coverage by metal. The crown must be sufficiently thick enough to hide the metal substructure and the opacious porcelain used to mask this alloy.

This video is a demonstration for dental students showing the steps of tooth preparation to receive a metal ceramic crown.