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Incomplete calcium hydroxide removal from the root canal: a case report
1Department of Restorative Dentistry and Endodontology, School of Dental Medicine, University of Connecticut Health Centre, Farmington, USA.
International Endodontic Journal
|May 20, 1998
Summary
Incomplete removal of calcium hydroxide (Ca(OH)2) intracanal dressing led to root canal treatment failure. Retreatment and proper obturation resulted in complete periradicular bone healing.
Area of Science:
- Endodontics
- Dental Materials Science
- Regenerative Endodontics
Background:
- Calcium hydroxide (Ca(OH)2) is a common intracanal medicament used in root canal therapy.
- Incomplete removal of Ca(OH)2 can lead to treatment failure and complications.
- Understanding the long-term effects of residual intracanal medicaments is crucial for successful endodontic outcomes.
Observation:
- A case of endodontic treatment failure in a maxillary central incisor was observed.
- The failure was attributed to incomplete mechanical removal of a Ca(OH)2 intracanal dressing.
- Subsequent resorption of the Ca(OH)2 from the apical root canal portion was noted.
Findings:
- Retreatment, including thorough canal cleaning and permanent obturation with cold gutta-percha and sealer, was performed 4 years after initial treatment failure.
- Histopathological and microbiological evidence suggests mechanisms for treatment failure and healing.
- Follow-up examination revealed complete periradicular bone healing, with evidence of lamina dura formation.
Implications:
- This case highlights the importance of meticulous mechanical cleaning during root canal retreatment.
- Complete removal of intracanal medicaments like Ca(OH)2 is essential to prevent long-term complications.
- Successful retreatment can lead to complete healing and restoration of periradicular tissues, emphasizing the predictability of endodontic therapy when performed correctly.