title: Influence of root development and root anatomy on the occurrence of periodontal damage during removal of third molars for transplantation: a histometric study.
abstract: The purpose of this study was to determine the influence of root development and root anatomy on surgically induced periodontal damage to third molars resulting from removal prior to transplantation. Thirty impacted third molars were removed by a careful technique, whereas another 30 were removed by the usual vestibular osteotomy and served as controls. Periodontal damage was histometrically evaluated on serial cross sections of the whole root and classified according to five categories describing the extent of damage to periodontal fibers, cementoblasts, and the cementum layer. The results showed more extensive damage to the periodontal membrane in the more mature stages of root development. A statistically significant influence of root anatomy on the occurrence of periodontal damage was not found.
authors.affiliation: Department of Oral and Maxillofacial Surgery, University Medical School, Hannover, FRG.
authors.forename: H
authors.initials: H
authors.lastname: Schliephake
authors.forename: F W
authors.initials: FW
authors.lastname: Neukam
mesh_terms: D003739:Dental Cementum / Q000293:injuries*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008964:Molar, Third / Q000637:transplantation; D010513:Periodontal Ligament / Q000293:injuries*; D010781:Photography; D014081:Tooth Extraction / Q000295:instrumentation / Q000379:methods*; D014092:Tooth Root / Q000254:growth & development / Q000473:pathology*