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Coronal leakage along apical root fillings after immediate and delayed post space preparation
1Department of Cariology and Endodontology, College of Stomatology, Hubei Medical University, Wuhan, China.
Endodontics & Dental Traumatology
|October 26, 1999
Summary
Delayed post space preparation after root canal filling significantly increases apical leakage. Immediate preparation maintains the root canal seal better, crucial for endodontic treatment success.
Area of Science:
- Endodontics
- Dental Materials Science
- Restorative Dentistry
Background:
- Root canal filling aims to seal the root canal system to prevent bacterial ingress.
- Post space preparation, necessary for post-endodontic restoration, can potentially compromise the integrity of the root canal filling and its seal.
Purpose of the Study:
- To investigate the effect of immediate versus delayed post space preparation on the apical seal of root canal fillings.
- To determine if the timing of post space preparation influences coronal-to-apical leakage in endodontically treated teeth.
Main Methods:
- Eighty human mandibular premolars with single canals were obturated using laterally condensed gutta-percha and sealer.
- Teeth were divided into two groups: immediate post space preparation (n=40) and delayed post space preparation (n=40).
- Apical leakage was assessed using a fluid transport device under a constant pressure of 30 kPa.
Main Results:
- A statistically significant increase in apical leakage was observed in teeth that underwent delayed post space preparation compared to those with immediate preparation (P = 0.0059).
- Immediate post space preparation demonstrated a superior ability to maintain the apical seal.
Conclusions:
- The timing of post space preparation critically impacts the apical seal of root canal fillings.
- Performing post space preparation immediately after root canal obturation is recommended to minimize apical leakage and enhance the long-term prognosis of endodontic treatment.