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In vitro evaluation of a carbon fiber post
J P Dean1, B G Jeansonne, N Sarkar
1Louisiana State University School of Dentistry, Department of Endodontics, New Orleans 70119-2799, USA.
Journal of Endodontics
|February 19, 1999
Summary
Restorative dental procedures impact tooth fracture resistance. Carbon posts with composite build-ups may reduce root fractures compared to tapered or parallel posts after endodontic treatment.
Area of Science:
- Dentistry
- Biomaterials Science
- Dental Mechanics
Background:
- Endodontic treatment and restorative procedures can affect the structural integrity of teeth.
- Post and core build-ups are common after root canal therapy to restore coronal structure.
- The choice of post material may influence the fracture resistance and failure modes of restored teeth.
Purpose of the Study:
- To evaluate the influence of endodontic and restorative procedures on tooth fracture resistance.
- To compare the incidence of root fracture in teeth restored with different post types and a composite core build-up.
Main Methods:
- Seven groups of 10 extracted maxillary canines were used.
- Procedures included crown preparation, endodontic treatment, and various post-and-core restorations (tapered, parallel, carbon posts).
- Specimens were subjected to a 45-degree load until failure, with force and fracture location recorded.
Main Results:
- Teeth with post and composite build-ups showed significantly lower fracture resistance than those without.
- No significant difference in failure force was found among tapered, parallel, and carbon post groups.
- The carbon post group exhibited no root fractures, unlike the parallel and tapered post groups.
Conclusions:
- Post and composite build-ups reduce fracture resistance in endodontically treated teeth.
- Carbon posts may offer an advantage in preventing root fractures compared to parallel and tapered posts.