title: Hard tissue alterations after socket preservation with additional buccal overbuilding: a study in the beagle dog.
abstract: OBJECTIVE
  The aim of this study was to histometrically assess alterations of the ridge following socket preservation alone and socket preservation with additional buccal overbuilding.
  
  
  METHODS
  In five beagle dogs four extraction sites were randomly subjected to one of the following treatments: Tx 1: The socket was filled with BioOss Collagen and covered with a free gingival graft from the palate. Tx 2: The buccal bone plate was augmented using the GBR-technique, the socket was filled with BioOss Collagen and covered with a free gingival graft. Tx 3: The buccal bone plate was forced into a buccal direction using a manual bone spreader. The socket was filled with BioOss Collagen and covered with a free gingival graft from the palate. Tx 4: The socket was filled with BioOss Collagen and a combined free gingival/connective tissue graft was used to cover the socket and for buccal tissue augmentation. For each experimental site, two histological sections were subjected to histometric analysis and evaluated for (i) vertical bone dimensions and (ii) horizontal bone dimensions.
  
  
  RESULTS
  All treatment groups showed horizontal and vertical bone loss. The mean vertical bone loss of the buccal bone plate was significantly lower in Tx 4 than in the other groups, while no statistical significant differences could be detected among the groups in the horizontal dimension.
  
  
  CONCLUSIONS
  Overbuilding the buccal aspect in combination with socket preservation does not seem to be a suitable technique to compensate for the alterations after tooth extraction.
authors.affiliation: Department of Periodontology and Implant Dentistry, New York University College of Dentistry, New York, NY 10010, USA. fickl@nyu.edu
authors.forename: Stefan
authors.initials: S
authors.lastname: Fickl
authors.forename: Otto
authors.initials: O
authors.lastname: Zuhr
authors.forename: Hannes
authors.initials: H
authors.lastname: Wachtel
authors.forename: Moritz
authors.initials: M
authors.lastname: Kebschull
authors.forename: Markus B
authors.initials: MB
authors.lastname: Hürzeler
mesh_terms: D020341:Absorbable Implants; D016301:Alveolar Bone Loss / Q000209:etiology; D000539:Alveolar Process / Q000473:pathology*; D000540:Alveolar Ridge Augmentation / Q000379:methods*; D000543:Alveoloplasty / Q000379:methods*; D000818:Animals; D001672:Biocompatible Materials; D001857:Bone Matrix / Q000637:transplantation; D018786:Bone Substitutes / Q000627:therapeutic use; D003094:Collagen; D003238:Connective Tissue / Q000637:transplantation; D004285:Dogs; D005881:Gingiva / Q000637:transplantation; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods; D008334:Mandible / Q000473:pathology / Q000601:surgery*; D008567:Membranes, Artificial; D008903:Minerals / Q000627:therapeutic use; D011183:Postoperative Complications; D011897:Random Allocation; D020390:Tooth Socket / Q000473:pathology / Q000601:surgery*
chemical_list: C106416:Bio-Gide; C077540:Bio-Oss; D001672:Biocompatible Materials; D018786:Bone Substitutes; D008567:Membranes, Artificial; D008903:Minerals; D003094:Collagen