Category:

Crown and Bridge Updated

Course Outline

This course will evaluate the various types of porcelain crowns available and bring you up to date on the current methods of cutting a preparation and taking impressions using the new material in use today. The most spectacular changes are in the materials. We no longer need to take a full mouth impression to establish the bite. This is done automatically when the impression is taken. Our impression material is more accurate and flows into the margins easier giving us a more accurate impression.

Even more impressive is the need for the doctor to take his own impressions or make his own temporaries. Both of these functions are now given to the new RDAEF (Register Dental Assistant Extended Functions). The doctor still needs to cut the preparation, but once this is done, the RDAEF can pack the cord, take the impression, and place the temporary.

I feel it is still important for the doctor to check the bite to be sure the temporary is not high. Otherwise, he may find himself coming back to the office to adjust the bite at some inconvenient hour.

Learning Objectives

After completing this course you’ll be able to:

  1. Describe the three types of margins.
  2. Describe the preparation required for placing a margin on a root canaled tooth.
  3. Discuss possible problems when placing a margin on a root canaled tooth.
  4. Describe the procedure for preparing a maxillary molar.
  5. Describe mandibular bicuspid preparation.
  6. Discuss preparation for mandibular incisors.
  7. Describe possible problems of mandibular cuspid preparation.
  8. Describe maxillary incisor preparation.
  9. Discuss the beveled margin.
  10. Define crown lengthening.
  11. Describe the process of build up.
  12. Describe the five ways to remove a crown.
  13. Describe the impression technique for an acrylic temporary crown.
  14. Discuss the use of impression trays.
  15. Compare the three types of temporary crowns.
  16. List advantages and disadvantages of stainless-steel crowns.
  17. Discuss areas of concern for stainless-steel crown preparation.
  18. Describe how to remove a temporary crown.
  19. Compare underoccluding and overoccluding.
  20. Discuss cementing and seating a crown.
  21. Describe the luting technique.
  22. Discuss post-operative observations after seating a crown.
  23. Compare the Captek Crowns and IPS Empress.
  24. List the advantages and disadvantages of the CAD/CAM system.
  25. List the advantages and disadvanges of the office digital scanner.
  26. Compare the Lava crown and Procera All Ceram crown.

Course Contents

Table of Contents

Full Crown

Types of Margins

  • Shoulderless (Feather Edge) Margin
  • Porcelain Margin
  • The Bevel Porcelain Margin
  • Posterior Mandibular Molar Full-Crown
  • Burs

The Root Canaled Tooth

  • Procedure
  • Preparation
  • Analyze the Preparation
  • Tips
  • Possible Problems

Maxillary Molar Preparation

  • Burs
  • Procedure
  • Possible Problems

Mandibular Bicuspid Preparation

  • Burs
  • Possible Problems

Mandibular Incisors Preparation

  • Burs
  • Possible Problems

Mandibular Cuspid Preparation

  • Burs
  • Possible Problems

Maxillary Incisors Preparation

  • Burs
  • Possible Problems

The Beveled Margin (Lava Crown)

  • Burs

Crown Lengthening

Block Out vs. Buildup

Bite Registration

Crown Removal

Acrylic Temporary Crown – Impression Technique

  • Possible Problems
  • The Impression

Packing

  • Materials
  • Possible Problems
  • Impression Trays

Compressed Impression

  • Possible Problems

Temporary Crown

  • Objectives of a Temporary Crown

Gold-Anodized Aluminum Crown

  • Materials
  • Procedure
  • Rules to Follow
  • Possible Problems

Polycarbonate Crown (ion)

  • Materials
  • Possible Problems

Transparent Crown Forms (Cellulose Acetate)

  • Materials
  • Possible Problems

Stainless Steel Crowns

  • Stainless Steel Preparation
  • Burs
  • Materials
  • Areas of Concern
  • Possible Problems

Primary Stainless Steel Crown

Permanent Crown Insertion

  • Materials

Removal of the Temporary Crown

  • Anodized Aluminum Crown
  • Possible Problems
  • Acrylic Temporary Crown
  • Seating the Crown
  • Possible Problems
  • Possible Solution

Tight Contacts

The Bite Relationship

  • Underoccluding
  • Overoccluding
  • Possible Problems

X-Ray

Cementation

  • The Crown Is Ready for Cementation
  • Once the Crown is Seated, Additional Pressure is Applied

Luting

Insertion

Postocclusion

Postoperative

Types of Crowns

Feldspathic Porcelain

  • Uses
  • Disadvantage

Captek Crowns

IPS Empress

  • Advantages

Chairside CAD/CAM Systems – E4D

In-Office Digital Scanners

  • Bluecam Technology

Lava Crown

Procera All-Ceram Crown

Conclusions