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Provisional Coverage. Chapter 51. Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved. Chapter 51 Lesson 51.1. Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved. Learning Objectives. Pronounce, define, and spell the Key Terms.

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provisional coverage

Provisional Coverage

Chapter 51

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

chapter 51 lesson 51 1
Chapter 51Lesson 51.1

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

learning objectives
Learning Objectives
  • Pronounce, define, and spell the Key Terms.
  • Discuss the indications for provisional coverage for a crown or fixed-bridge preparation.
  • Describe the types of provisional coverage.
  • Discuss the dental assistant’s role in making a provisional crown or bridge.
  • List home-care instructions for the patient with provisional coverage.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

provisional coverage4
Provisional Coverage

Provisional coverage is a protective covering worn temporarily while a fixed prosthesis is being fabricated in the dental laboratory.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

purposes of provisional coverage
Purposes of Provisional Coverage
  • Reduces sensitivity and discomfort of the prepared tooth
  • Maintains the function and aesthetics of the prepared tooth
  • Protects the margins of the preparation
  • Prevents shifting of the adjacent or opposing teeth

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

custom provisional coverage
Custom Provisional Coverage
  • The most versatile provisional coverage for crown and bridge preparations
    • Can be used for posterior or anterior crowns or bridges.
    • Provides the best fit
    • Most natural-looking

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

fig 51 1 custom provisional coverage
Fig. 51-1 Custom provisional coverage.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

criteria for constructing provisional coverage
Criteria for Constructing Provisional Coverage
  • The coverage is aesthetically acceptable to the patient
  • The contours are similar to those of the natural tooth.
  • The cervical margin is smooth and fits snugly.
  • Coverage must not extend below the margin of the preparation.
  • The occlusal surface is aligned with the occlusal plane of the adjacent teeth.
  • When cemented, the provisional coverage remains stable, stays in place, and is comfortable for the patient.
  • The provisional coverage can be easily removed without damage to the tooth or adjacent tissues.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

preformed polymer crowns
Preformed Polymer Crowns
  • Provisional shell-like crowns are designed specifically for premolars and molars.
    • Shells are made of a polymer material designed with the anatomic features of natural teeth.
    • Preformed polymer is available for single crowns and bridgework.
    • Composite resin bonds with preformed crown to preparation.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

fig 51 2 preformed polymer crown
Fig. 51-2 Preformed polymer crown.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

aluminum crowns
Aluminum Crowns
  • Aluminum crowns are designed specifically for premolars and molars.
    • Such crowns are available in a range of sizes for posterior teeth.
    • Surfaces may be anatomic or nonanatomic.
    • The crown is sized, contoured, and cemented in place.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

preformed polycarbonate crowns
Preformed Polycarbonate Crowns
  • Tooth-colored crowns are selected for anterior teeth, where appearance is important.
    • Available in a variety of sizes, shapes, and shades.
    • Easily adapted to margins.
    • Suitable for short- or longer-term use.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

fig 51 4 preformed polycarbonate crowns
Fig. 51-4 Preformed polycarbonate crowns.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.

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 contact. Once the floss is placed below the contact, pull it through.
  • If the provisional covering is loose or lost, contact the office immediately to have it recemented.

Copyright © 2009, 2006 by Saunders, an imprint of Elsevier Inc. All rights reserved.