Journal
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTOLOGY
Volume 106, Issue 5, Pages 757-762Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.tripleo.2008.06.007
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Objective. This study investigated the long-term (1-4 years) outcome of the endodontic treatment of teeth with apical periodontitis lesions performed by undergraduate students using a defined antimicrobial protocol. Study design. Treatment protocol included a crown-down instrumentation technique, apical enlargement to predetermined sizes and apical level, irrigation with 2.5% sodium hypochlorite, and intracanal medication with calcium hydroxide/camphorated paramonochlorophenol (CPMC) paste. The first 100 teeth from patients who returned for follow-up were examined. The outcome was assessed based on radiographic and clinical criteria as healed (success), healing (uncertain), or not healed (failure). Results. Overall results showed that 76% of the teeth healed, 19% were healing, and 5% had not healed. Most healed cases (75%) or failed cases (80%) were already evident at 2 years. Seven cases took 4 years to heal completely. Conclusions. The low failure rate observed in this study reinforces the importance of using an evidence-based antimicrobial strategy during endodontic treatment of teeth with apical periodontitis. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008; 106: 757-62)
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