Post-treatment apical periodontitis in an endodontically treated tooth is called as:: (A) Recurrent apical periodontitis., (B) Persistent apical periodontitis., (C) Phoenix abscess., (D) Chronic periapical abscess.
Answer is B. Persistent Apical Periodontitis
Persistent apical periodontitis is a post-treatment apical periodontitis in an endodontically treated tooth