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  • Title: Clinical outcome of the endodontic treatment of teeth with apical periodontitis using an antimicrobial protocol.
    Author: Siqueira JF, Rôças IN, Riche FN, Provenzano JC.
    Journal: Oral Surg Oral Med Oral Pathol Oral Radiol Endod; 2008 Nov; 106(5):757-62. PubMed ID: 18718786.
    Abstract:
    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.
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