Tooth Preparation For Metal Ceramic Crown

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

Tooth preparation for metal ceramic crown. 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. The preparation for a metal ceramic crown requires significant tooth reduction to provide sufficient space for the restorative materials. All ceramic crowns can be used for.

Most widely used. The need for superior re the preparation for a. The crown must be sufficiently thick enough to hide the metal substructure and the opacious porcelain used to mask this alloy. To be successful a metal ceramic crown preparation requires more tooth reduction wherever the metal substructure is to be veneered with dental porcelain.

Ceramic preparation is comparable to that of prepar typical indications are similar to those for ing a posterior tooth for a complete cast crown. 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. 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. Complete coverage by metal.

The porcelain veneer must have a certain minimum thickness for esthetics. 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. Tooth preparation for metal ceramic crowns. 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.

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. The tooth should have a relatively intact coronal structure that will provide sufficient support for the restoration particularly in the incisal area. Historically attempts to veneer metal restorations with porcelain had several problems. Veneer porcelain mimics 3 extention varies natural teethnatural teeth 4.

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