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Retreatment of endodontic fillings
Scandinavian Journal of Dental Research
|June 1, 1979
Summary
Endodontic retreatment significantly improves root filling seal and periapical healing in previously treated teeth. This procedure is the preferred method for addressing defective root canals with associated pathologic lesions.
Area of Science:
- Endodontics
- Restorative Dentistry
Background:
- Defective root canal fillings can lead to persistent periapical infections and lesions.
- Endodontic retreatment aims to re-establish a seal and eliminate intraradicular infection.
Purpose of the Study:
- To evaluate the effectiveness of endodontic retreatment on the quality of root canal seal.
- To assess the impact of retreatment on periapical healing in previously root-filled teeth.
Main Methods:
- 660 previously root-filled teeth were divided into groups based on periapical pathology.
- Retreatment involved chemomechanical debridement by dental students.
- Clinical and radiographic re-examinations were conducted after a 2-year follow-up.
Main Results:
- Retreatment significantly improved the seal and reduced the distance to the apex of root fillings.
- A high success rate was observed, with 78% of cases with periapical lesions showing healing or reduction.
- Retreatments for technical inadequacies alone achieved a 94% success rate.
Conclusions:
- Renewed endodontic treatment is the primary choice for defective root fillings with periapical pathology.
- Apical surgery is a secondary option if healing is not observed after retreatment.