Nonsurgical Root Canal Therapy of Large Cystic Periapical Lesions Using Simple Aspiration and LSTR (Lesion Sterilization and Tissue Repair) Technique: Case Reports and Review

Abstract

of the cystic fluid from the periapical lesion using a buccal palatal approach [13]. The disadvantage of this technique was the creation of buccal and palatal wounds that may cause discomfort to the patient. To overcome this, a simple technique [14] of aspiration through the root canal has been described. Inter appointment medicaments have been widely advocated to help eliminate remaining bacteria within the root canal system, reduce periapical inflammation and pain, and induce healing. Cariology Research Unit of Niigata University developed the concept of lesion sterilization and tissue repair therapy, which employs the use of a combination of antibiotics (metronidazole, ciprofloxacin, and minocycline) for disinfection of oral infectious lesions, including dentinal, pulpal, and periradicular lesions. The following case reports describe the successful endodontic treatment of a two large cyst-like periradicular lesion using a combination simple Aspiration technique and Triple antibiotic paste as an intracanal medicament. Case no.1 A 19 year's old female patient was referred by a private general practitioner to the Endodontic Speciality of the Shree Bankey Bihari Dental college and research centre, India for the treatment of maxillary right central incisor. Patient complained of swelling and pain in the upper front region of the mouth. Her medical status was non-contributory. Extra oral examination revealed a diffuse swelling