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Pulpal evaluation of teeth restored with fixed prostheses.
C R Jackson1, A E Skidmore, R T Rice
1Department of Endodontics, West Virginia University School of Dentistry, Morgantown.
The Journal of Prosthetic Dentistry
|March 1, 1992
Summary
Dental crowns and fixed prostheses can harm tooth pulp. This study found 5.7% of vital teeth crowned needed root canal therapy after restoration placement.
Area of Science:
- Dentistry
- Prosthodontics
- Dental Pulp Biology
Background:
- Crown fabrication involves multiple steps, each posing a risk of pulpal insult.
- Tooth preparation, impression techniques, temporary coverage, and final cementation can all irritate dental pulp.
- Pre-existing dental caries and restorative procedures also contribute to pulpal injury.
Purpose of the Study:
- To evaluate the effects of complete coverage fixed prosthetic restorations on dental pulp health.
- To determine the incidence of pulpal issues in teeth restored with crowns and fixed partial dentures.
Main Methods:
- A retrospective study involving 130 patients who received crowns or fixed partial dentures between 1984-1988.
- Examination of 603 teeth for pulpal health, periodontal integrity, and restoration acceptability.
- Analysis of 437 vital teeth that were crowned, excluding those with prior root canal therapy.
Main Results:
- Out of 437 vital crowned teeth, 25 (5.7%) required root canal therapy post-restoration.
- Pulpal inflammation and potential burn lesions are risks associated with tooth preparation.
- Dentin drying during impression can reduce the odontoblastic layer, and cements can cause irritation.
Conclusions:
- Complete coverage fixed prosthetic restorations carry a significant risk of pulpal injury.
- A notable percentage of vital teeth require endodontic treatment after receiving crowns.
- Careful management of all fabrication steps is crucial to minimize pulpal insult.