title: [Preimplant preparation of the extraction alveolus with the deproteinized bovine bone and calcium-sulphate].
abstract: BACKGROUND
  Different materials are used to prevent the resorption of alveolar bone. The aim of this report was to show the radiographical and histological results prior to implant insertion, when a deproteinized bovine bone mineral (BioOss) and calcium-sulphate were placed into the extraction socket immediatelly after the tooth removal.
  
  
  METHODS
  A 22-year-old woman was scheduled for the removal of the second lower molar when the extraction socket was filled with BioOss covered with calcium-sulphate as a resorbable membrane. Primary closure of the surgical site was performed. Radiography was done 4 and 12 months later. One year after the surgery, when the implant was inserted, a biopsy of the new regenerated bone was obtained for the histological evaluation. The lamellar bone was evident using both materials. The resorption of BioOss was slow and the connective tissue was observed.
  
  
  CONCLUSIONS
  Both materials had biocompatible and oseoconductive properties. One year after the grafting procedure, we observed the lamellar bone and partial resorption of BioOss, while calcium-sulphate showed no significant effect as a resorbable membrane.
authors.affiliation: Stomatoloski fakultet, Klinika za oralnu hirurgiju, Beograd.
authors.forename: Bozidar
authors.initials: B
authors.lastname: Brković
authors.forename: Milan
authors.initials: M
authors.lastname: Radulović
authors.forename: Vesna
authors.initials: V
authors.lastname: Danilović
mesh_terms: D000539:Alveolar Process; D001672:Biocompatible Materials; D018786:Bone Substitutes; D002133:Calcium Sulfate / Q000008:administration & dosage*; D003758:Dental Implantation, Endosseous; D003764:Dental Materials; D005260:Female; D006801:Humans; D008903:Minerals; D020390:Tooth Socket
chemical_list: C077540:Bio-Oss; D001672:Biocompatible Materials; D018786:Bone Substitutes; D003764:Dental Materials; D008903:Minerals; D002133:Calcium Sulfate