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*Cast metal Full

CrownCast metal

Complete veneercrown

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*Contents

What is the full crown?

How many types of the full crown

are there?

Whats the advantage of the metal

cast crown?

Which teeth need crowns?

How are crowns done?

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*What is the full crown

A dental restoration that

completely reproduces the clinical

crown of a natural tooth

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*Types of the crown

Metal full crown

Non-metal full

crown

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*Types of the crown

Combinatorial crown

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Metal crown( posterior tooth)

Cast metal crown

Wrought metal crown

Computer aided design and computer

aided manufactory ( CAD/CAM ) metal

crown

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Non-metal crown( posterior and anterior tooth)

resin crown

ceramic crown

Cast glass ceramic crown

CAD/CAM ceramic crown

Porcelain crown

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combinatorial crown (posterior and anterior

tooth)

Porcelain fused to metal crown

Metal-resin crown

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*Definition of cast metal

crown

Cast metal crown is a full crown restoration which is cast

with dental alloy.

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*Advantages of cast metal

crownhigh Strength

tooth removed lessfitness

Long lasting

Fine protection

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*Indications of metal crown

Posteriortooth with large defect

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*Indications of metal crown

Malposition , torsoclusion or

malformation of posterior tooth.

Weak posterior abutment of removable

partial denture.

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Posterior retainer of

fixed partial denture

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Posterior tooth after RCT ( Root canal therapy.

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*Contraindications of

metal crownIncontrollable caries

People allergic to the metal

Tooth with esthetical requirement

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*Contraindications of

metal crownResidual root

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*Design of metal crown

Material selection

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*Design of metal crown

The position of gingival margin of the

crown

To reduce the occlusal force

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*Tooth preparation

Occlusal reduction

Provide the adequate room for the crown

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*Tooth preparation

Occlusal surface

Amount of tooth reduction

1.0mm

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Essentials of Occlusal preparation

Reduce the

inclination of cusp

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Essentials of Occlusal preparation

Prepare ladder on large filling material

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Buccal and lingual reduction

Provide the adequate room for the crown

Amount of tooth removing1.0mm

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Essentials of buccal and lingualpreparation

The functional cusp bevel preparation

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Proximal reduction

Provide the adequate room for the crown

Amount of tooth removing1.0mm

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Essentials of axical preparation

Axial convergent angle 6

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The axial surface angel preparation

To keep the contour of the crown

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Cervical preparation

Chamfer or bevel

Width of shoulder

Non-noble metal0.5~0.8mm

Noble metal0.35~0.5mm

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Position of gingival margin

At the gingiva

0.5 mm above gingiva

0.5~1.0mm under gingiva

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Finish

1.0mm

1.0

0.5 to 0.8

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*Impression of metal crown

An imprint of the teeth and

surrounding tissues, formed with a

plastic material to provide a mold for

use in making restorations

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Impression steps

Impression of opposite teeth

Impression of abutment

Bite Registration

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Gingival retractionRetraction cord

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Impression procedure

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Impression method

Two step method

One step method

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*Try in of metal crown

Check the gingival

margin and tissular

surface of the

crown

Try in on the die

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*Try in of metal crown

Placement onto the abutment

Occlusal adjustment

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*Essentials

Pulp protection

Gingiva protection

Dental tissue protection

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*Essentials

Correct tool selection

Application of temporary crown

Occlusal adjustment

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*Essentials

Indications and contraindications

To improve the retention

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