title: Radiographic evaluation of extruded obturation materials.
abstract: The radiographic appearance of filling material extruded into periradicular tissues during obturation of root canals was studied over time. Recall radiographs for up to 6 1/2 yr were compared with immediate postoperative films. Consistently, less material was evident at successive postoperative periods. This study indicated that given time, the two zinc oxide and eugenol-based sealers studied will be removed from periradicular tissues. It also indicated that sealer is removed from periradicular tissues more rapidly than gutta-percha.
authors.affiliation: USA DENTAC, Fort Huachuca, AZ.
authors.forename: R A
authors.initials: RA
authors.lastname: Augsburger
authors.forename: D D
authors.initials: DD
authors.lastname: Peters
mesh_terms: D005119:Extravasation of Diagnostic and Therapeutic Materials / Q000000981:diagnostic imaging*; D005500:Follow-Up Studies; D006171:Gutta-Percha / Q000009:adverse effects; D006801:Humans; D015588:Observer Variation; D011859:Radiography; D012389:Root Canal Obturation / Q000009:adverse effects*; D013997:Time Factors; D015035:Zinc Oxide-Eugenol Cement / Q000009:adverse effects
chemical_list: D015035:Zinc Oxide-Eugenol Cement; D006171:Gutta-Percha