EFFECT OF DIFFERENT ROOT-CANAL SEALERS ON PERIAPICAL REPAIR OF TEETH WITH CHRONIC PERIRADICULAR PERIODONTITIS

Teeth with induced chronic periradicular periodontitis in dogs were ro ot canal treated. After the biomechanical preparation, using It files and 5.25% sodium hypochlorite as the irrigant solution, all root canal s were dressed with an antibacterial dressing based on calcium hydroxi de, which was left in place for 7 days. After this time, the root cana ls were obturated with lateral condensation of cold gutta-percha with either a calcium hydroxide root canal filling material (Sealapex) or a zinc oxide-eugenol sealer (Fill Canal). After 270 days, histopatholog ical analysis showed better epical and periapical repair in the teeth obturated with Sealapex (P < 0.05).