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Post-Retained Single Crowns versus Fixed Dental Prostheses: A 7-Year Prospective Clinical Study
M Ferrari1,2, R Sorrentino1,3, J Juloski1,4
11 Department of Medical Biotechnologies, Division of Fixed Prosthodontics, University of Siena, Siena, Italy.
Journal of Dental Research
|August 4, 2017
Summary
The 7-year survival rate for endodontically treated teeth (ETT) restored with fiber posts is 69.2%. More coronal structure and single crowns improve ETT survival, while less structure and fixed dental prostheses reduce it.
Area of Science:
- Dentistry
- Biomaterials Science
- Prosthodontics
Background:
- Endodontically treated teeth (ETT) often have compromised biomechanical integrity.
- Restoration planning requires careful consideration of hard tissue loss and prosthetic type.
Purpose of the Study:
- To evaluate the 7-year clinical performance of ETT restored with fiber posts.
- To assess the impact of prosthetic restoration type and residual coronal structure on ETT survival.
Main Methods:
- Prospective clinical trial involving 120 ETT.
- Groups: single unit crowns (SCs) vs. 3-4 unit fixed dental prostheses (FDPs).
- Subgroups based on residual coronal structure: >50% (A) vs. <=50% (B).
Main Results:
- Overall 7-year survival rate was 69.2%.
- Highest survival (90%) in group 1A (SCs, >50% structure).
- Lowest survival (56.7%) in group 2B (FDPs, <=50% structure).
- Residual coronal structure and its interaction with restoration type significantly impacted survival.
Conclusions:
- The amount of residual coronal structure is a critical factor for ETT survival.
- The type of prosthetic restoration interacts with residual structure to influence long-term outcomes.
- Optimizing restoration strategies based on remaining tooth structure is essential for ETT longevity.
