Long-term successful retreatment of a tooth with apical periodontitis following resorcinol-formalin endodontic treatment and apical root resection: a 25-year follow-up clinical case report
The resorcinol-formalin method, widely used approximately two decades ago due to its simplicity and low cost, has significant disadvantages, including cytotoxicity, incomplete root canal filling, increased tooth brittleness, discoloration, and ankylosis. It remains one of the common causes of exacerbation of apical per...