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PowerPoint ® Presentation for Dental Materials with Labs. Module: Prosthodontics: Fixed Prosthodontics. Module: Prosthodontics: Fixed Prosthodontics. Prosthodontics: Fixed Prosthodontics. Part A: Types of Fixed Prosthetics Part B: Fixed Prostheses Procedures.

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PowerPoint® Presentation for Dental Materials with Labs

Module:

Prosthodontics: Fixed Prosthodontics

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Module: Prosthodontics: Fixed Prosthodontics

Prosthodontics: Fixed Prosthodontics

Part A: Types of Fixed Prosthetics

Part B: Fixed Prostheses Procedures

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Module: Prosthodontics: Fixed Prosthodontics

Learning Objectives

1. Define the Key Terms.

2. Describe various types of fixed

prostheses and their functions.

3. Describe dental materials used in fixed

prostheses.

4. Explain the role of the dental assistant in

fixed prosthodontic treatment.

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Fixed Prosthetics

Learning Objectives

5. Demonstrate assisting during a crown

preparation appointment.

6. Demonstrate assisting during a crown cementation appointment.

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Abutments

Bite registration

Cosmetic/esthetic dentistry

Dental casting alloy

Fixed prosthodontics

Full-cast crown

Inlays

Maryland bridge

Onlays

Partial crown

Pontic

Porcelain-to-metal crowns

Post-retained cores

Prostheses

Retention core

Retention pins

Shade guide

Veneers

Key Terms

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Part A: Types of Fixed Prosthodontics

Purpose of Prosthodontics

Restore masticatory function

Improve appearance

Improve speech

Promote good oral hygiene

Stabilize arch and occlusion

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Contraindications for a Fixed Prosthesis

Lack of supporting alveolar bone

Presence of periodontal disease

Excessive mobility of abutment teeth

Lack of patient interest in oral hygiene

Patient cannot afford treatment

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Cosmetic Dentistry

Crowns and

bridges

Tooth

lengthening

Repairing

fractures

Veneers

Restoring

strength

Changing

shape

Tooth

whitening

Occlusion

Changing

shade

Orthodontics

Closing a diastema

Esthetics

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Types of Fixed Prostheses

Full-cast

crown

Porcelain

veneers

Partial

crown

Direct

resin

veneers

Onlays

Indirect

resin

veneers

Bridges

Fixed

prostheses

Inlays

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Materials Used for Fixed Prostheses

Gold

alloy

Porcelain

fused to metal

Porcelain

Composite

resin

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Retention of Restorations

  • Core buildup

    • Recreation of lost tooth structure

  • Retention pins

    • Screwed into dentin

    • Hold core filling material

  • Post and core

    • After root canal therapy

    • Strengthens tooth

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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The Dental Laboratory

  • Dental lab technician

    • Fabricates restoration

    • Makes die from impression

    • Creates wax pattern on die

    • Invests wax and casts invested material into metal

    • Prepares metal for porcelain layers

    • Finishes and polishes final restoration

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Dental Assistant Responsibilities

  • Communicate closely with lab technician

  • Dental assistant

    • Inform patient of procedure steps

    • Prepare equipment and supplies

    • Assist dentist during procedure

    • Expanded functions in many states

    • Coordinate patient appointments

    • Some lab procedures performed in office

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Part B: Fixed Prosthesis Procedures

Crown preparation set-up

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Selecting a Tooth Shade

  • Before preparation

  • Moisten shade guide

  • Match to natural teeth under natural light

  • Record in patient’s chart

  • Record on lab prescription

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Margin Preparations

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Tissue Retraction

  • Placed in gingival sulcus

  • Mechanical and chemical retraction

  • Prevents bleeding

  • Ensures impression of gingival margin

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Elastomeric Impressions

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Provisional Restorations

Temporary coverage to protect tooth

between appointments

Esthetics and patient comfort

Stabilize contacts and occlusion

Protect gingiva and interproximal areas

Fit gingival margin snugly

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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The Laboratory Prescription

Patient’s

name

Tooth

shade

Description

of prosthesis

Dentist’s

information

Materials

for prosthesis

Date

requested

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Crown Cementation

  • Check fit

    • Margin

    • Contacts

    • Occlusion

  • Adjust if necessary

  • Permanent cement

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Fixed Prostheses Maintenance

Toothbrush

Threading

systems

Antimicrobial

rinses

Dental

floss

Water

irrigators

Interproximal

bushes

  • Crowns

  • Bridges

  • Dental implants

Plaque

removal

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Assessment Questions

  • What is the term for the tooth being replaced in a bridge?

    The pontic

  • What is the term for the stabilizing teeth on each side of the pontic?

    The abutments

  • Where is the gingival retraction cord placed?

    In the gingival sulcus around the collar of the tooth

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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Summary of Module

  • Key Terms

  • Types of fixed prosthetics

  • Fixed prostheses procedures

Copyright © 2006 Thomson Delmar Learning. ALL RIGHTS RESERVED.


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