Metal Ceramic Crown

 



Metal ceramic crowns 

These are the most commonly used crowns in the modern era. also called porcelain fused to metal crowns. They are used to get both strength and aesthetics and for both anterior and posterior teeth. They have a frame that is metallic and is lined with ceramic coating. In comparison to plastic and metal crowns, metal-ceramic crowns are much more durable and aesthetic. They also possess natural transparency. They are a good choice if the patient is allergic to metal. A Chromium-Cobalt alloy is the most often used material for making the frame. 

Indications :

 1. Indicated on teeth that need complete coverage where significant aesthetic demands are laid on the dentist.

2. Extensive tooth destruction due to caries, trauma to the existing previous restorations

3. For superior retention and strength

4. An endodontically treated teeth in conjunction with a suitable structure eg: post and core

5. If All-ceramic crowns are contraindicated

Contraindications :

1. Patients with active caries and with untreated periodontal disease

2. In young patients with large pulp chambers

3. Intact buccal wall

4. When more conservative retainer is technically feasible

Advantages :

 1. Metal ceramic combines to the large degree of strength of a cast metal and aesthetics of an All ceramic crown

2.  Retentive qualities are excellent because all axial walls are included in the preparation

3. Natural appearance can be closely matched by good technique

4. The required preparation is often much less demanding than for partial coverage retainers

Disadvantages :

1. Removal of substantial tooth structure

2. Subject to fracture because porcelain is brittle

3. Difficult to obtain accurate occlusion with glazed porcelain

4. Expensive compared to metal crowns

5. Inferior aesthetics compared to All-ceramic crowns

About the Author:

Name: Dr. Abhilash Dandy

Qualification: B.D.S

I graduated as a Dentist from Sibar Institute of Dental Sciences, Guntur. I have done my externship program at Rutgers school of dental medicine, New Jersey, USA. I have clinical experience of 3 years and currently working as Administrative head - Dental wing in MediCub India, Hyderabad.

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