Khayat, Akbar2022-06-062022-06-0619771977(OCoLC)429104403(OCoLC)429104403b33128480https://hdl.handle.net/2144/44605PLEASE NOTE: This work is protected by copyright. Downloading is restricted to the BU community: please click Download and log in with a valid BU account to access. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.Thesis (M.Sc.D.) --Boston University, School of Graduate Dentistry, 1977 (Endodontics).Includes bibliography (leaves 106-112).According to the dental　literature, many scientific studies have been carried out, both clinically and histologically, about the healing of wounds after: periodontal surgery, tooth extraction, apicoectomy and bone fracture. Also there is a considerable agreement concerning the healing of periapical lesions of endodontic origin following root canal treatment. But almost all criteria are based only on clinical observations such as: patient’s symptoms and radiographic demonstrations. The present paper will attempt to demonstrate by a histopathologic investigation the sequence of events which take place in the periapical lesions after non-surgical endodontic treatment.en-USThis work is protected by copyright. Downloading is restricted to the BU community. If you are the author of this work and would like to make it publicly available, please contact open-help@bu.edu.PulpitisRoot canal therapyThesis/Dissertation