copyright 2003, elsevier science (usa). all rights reserved. provisional coverage chapter 51...

Copyright 2003, Elsevier Science (USA). All rights reserved.

Provisional Coverage Provisional Coverage Chapter 51Chapter 51

Copyright 2003, Elsevier Science (USA).

All rights reserved. No part of this product may be reproduced or transmitted in any form or by any means, electronic or mechanical, including input into or storage in any information system, without permission in writing from the publisher.

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Produced in the United States of America

ISBN 0-7216-9770-4


IntroductionIntroduction

Provisional coverage is a temporary protective covering that is temporarily cemented to a prepared tooth for a single crown or to abutment teeth for a bridge preparation.

Provisional coverage is a temporary protective covering that is temporarily cemented to a prepared tooth for a single crown or to abutment teeth for a bridge preparation.


Purpose of Provisional Coverage Purpose of Provisional Coverage Reduces sensitivity and discomfort in

the prepared tooth. Maintains the function and esthetics of

the tooth. Protects the margins of the

preparations. Prevents shifting of the adjacent or

opposing teeth.

Reduces sensitivity and discomfort in the prepared tooth.

Maintains the function and esthetics of the tooth.

Protects the margins of the preparations.

Prevents shifting of the adjacent or opposing teeth.


Fig. 51-1 Types of provisional coverage.Fig. 51-1 Types of provisional coverage.


Custom Provisional Coverage Custom Provisional Coverage

The most common type of provisional coverage used for crown and bridge preparations. The technique can be used for either posterior or anterior crowns or bridges.

The most common type of provisional coverage used for crown and bridge preparations. The technique can be used for either posterior or anterior crowns or bridges.


Criteria for Constructing Provisional Coverage Criteria for Constructing Provisional Coverage Must be esthetically acceptable to the patient. The contours are similar to those of the natural tooth. The cervical margin is smooth and fits snugly. Does not extend below the margin of the

preparation. The occlusal surface is aligned with the occlusal

plane of the adjacent teeth. When cemented, it remains stable, stays in place,

and is comfortable for the patient. Can be readily removed without damage to the tooth

or adjacent tissues.

Must be esthetically acceptable to the patient. The contours are similar to those of the natural tooth. The cervical margin is smooth and fits snugly. Does not extend below the margin of the

preparation. The occlusal surface is aligned with the occlusal

plane of the adjacent teeth. When cemented, it remains stable, stays in place,

and is comfortable for the patient. Can be readily removed without damage to the tooth

or adjacent tissues.


Preformed Polymer Crowns Preformed Polymer Crowns

Provisional shell-like crowns that are designed specifically for premolars and molars. These shells are made from a polymer material that is designed with anatomic features of natural teeth.

Provisional shell-like crowns that are designed specifically for premolars and molars. These shells are made from a polymer material that is designed with anatomic features of natural teeth.


Fig. 51-8 Preformed polymer crown.Fig. 51-8 Preformed polymer crown.


Aluminum Crowns Aluminum Crowns An aluminum crown is available in a

range of sizes. The crown surface may be anatomic or

nonanatomic. The crown is sized, contoured, and

cemented in place.

An aluminum crown is available in a range of sizes.

The crown surface may be anatomic or nonanatomic.

The crown is sized, contoured, and cemented in place.


Fig. 51-13 Aluminum crown cemented.Fig. 51-13 Aluminum crown cemented.


Preformed Polycarbonate Crowns Preformed Polycarbonate Crowns

The preformed polycarbonate crown is tooth‑colored and is selected for anterior teeth where appearance is important.

These crowns are available in a variety of sizes, shapes, and shades.

The preformed polycarbonate crown is tooth‑colored and is selected for anterior teeth where appearance is important.

These crowns are available in a variety of sizes, shapes, and shades.


Fig. 51-14 Size and shape of a polycarbonate crown. Fig. 51-14 Size and shape of a polycarbonate crown.


Home Care Instructions for Provisional Coverage Home Care Instructions for Provisional Coverage

Bite and chew carefully, and avoid sticky foods.

When flossing, do not “pop” the floss in and out of the contact. Once the floss is placed below the contact, pull the floss through.

If the provisional covering is loose or lost, contact the office immediately to have it recemented.

Bite and chew carefully, and avoid sticky foods.

When flossing, do not “pop” the floss in and out of the contact. Once the floss is placed below the contact, pull the floss through.

If the provisional covering is loose or lost, contact the office immediately to have it recemented.

copyright 2003, elsevier science (usa). all rights reserved. provisional coverage chapter 51...

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