title: [Histologic comparison of treating root surfaces with different acids].
abstract: OBJECTIVE
  To study the healing mechanism of different etching agents for periodontitis-affected teeth in animal models.
  
  
  METHODS
  The animal models of defect alveolar bone were prepared, and the isolated teeth with periodontitis were scaled according to periodontal surgery in vitro. After different acid acid-treatment, the dentin blocks were implanted into defect bones, then the results were examined histologically after 3, 7, 14, 28 days respectively.
  
  
  RESULTS
  There was less inflammatory reaction in tetracycline group after operation. At the later stages, the healing in tetracycline group was characterized by osseointegration without resorption. But hydrochloric acid group and citric acid group showed different reactions.
  
  
  CONCLUSIONS
  Periodontal tissue repair differs with the use of different acids.
authors.affiliation: College of Stomatology, Sun Yet-san University of Medical Sciences.
authors.forename: M
authors.initials: M
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Kurihara
mesh_terms: D000818:Animals; D002951:Citrates / Q000627:therapeutic use*; D006851:Hydrochloric Acid / Q000627:therapeutic use; D008297:Male; D010510:Periodontal Diseases / Q000188:drug therapy / Q000473:pathology*; D051381:Rats; D017208:Rats, Wistar; D013752:Tetracycline / Q000627:therapeutic use*; D014092:Tooth Root / Q000187:drug effects*
chemical_list: D002951:Citrates; D013752:Tetracycline; D006851:Hydrochloric Acid