title: Interrelation between endodontic status, pathologic cemental granules and periodontal ligament adhering to the root of extracted teeth.
abstract: OBJECTIVE
  To evaluate if the endodontic status has influence on the adherence of periodontal ligament (PDL) to extracted teeth and if the presence of "pathologic granules" is correlated to the endodontic status and/or the amount of adhering PDL.
  
  
  METHODS
  Extracted teeth with different endodontic status and exhibiting no marginal periodontitis were histologically examined.
  
  
  RESULTS
  Observation of pathologic granules was related to a nonvital endodontium and to acute peroperative inflammation. Pathologic granules and denudation of the extracted roots were significantly related. Acute peroperative inflammation and low extraction forces were related to denudation of the roots. Such relation was not found for endodontic status, tooth type, root-form, and age of patients.
  
  
  CONCLUSIONS
  The existence of pathologic granules in unexposed cementum is strictly related to teeth with a nonvital endodontium. There is no effect of the endodontic status on the adherence of PDL when an acute inflammation is absent.
authors.affiliation: Department of Oral Surgery, University of Bonn, Bonn, Germany. ypohl@uni-bonn.de
authors.forename: Yango
authors.initials: Y
authors.lastname: Pohl
authors.forename: Markus
authors.initials: M
authors.lastname: Krema
authors.forename: Horst
authors.initials: H
authors.lastname: Kirschner
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D002648:Child; D003739:Dental Cementum / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D010513:Periodontal Ligament / Q000473:pathology; D011671:Pulpitis / Q000150:complications*; D012391:Root Resorption / Q000517:prevention & control; D016037:Single-Blind Method; D014081:Tooth Extraction; D014090:Tooth Replantation / Q000379:methods*; D014092:Tooth Root / Q000473:pathology*; D019553:Tooth, Nonvital / Q000150:complications* / Q000473:pathology