SEM study of the effect of passive ultrasonic irrigation on the cleanliness of dentinal tubules in endodontic retreatment

Aim and Objective: Endodontic retreatment is indicated in the event of a failure initial treatment root canal an that looks to be correctable with retreatment. This in-vitro study was designed assess efficacy passive ultrasonic irrigation endodontic retreatment, by employing scanning electron microscopes, on cleanliness dentine tubules without solvent curved channels. Material method: Sixty human maxillary molar teeth were treated endontically. The protaper rotary instrument used canals crown down procedure under copious 3% NaOCl (2 ml) Glyde irrigation. saline solution (1 for final rinsing. 10 sample surfaces each group evaluated SEM pictures. Results: Amongst I II here more open dentinal statistically significant (p<0.05) Group group. IV demonstrated larger, between III IV. most found among four groups.