title: Histomorphometric Evaluation of Ridge Preservation With and Without Connective Tissue Graft Over Buccal Plate Using Different Types of Bone Substitute: An Animal Study.
abstract: OBJECTIVE
  The aim of this investigation was to assess the efficacy of using subepithelial connective tissue graft (CTG) over the buccal plate in conjunction with 2 different bone graft materials in fresh extraction sites.
  
  
  METHODS
  Five mongrel dogs were used. Bilateral third (P3) mandibular premolars were extracted atraumatically. Animals were randomly divided in the 4 experimental groups: no CT (NCT) + anorganic bovine bone (ABB), NCT + biphasic calcium phosphate (BCP), CT + ABB, and CT + BCP. This study evaluated tissue healing at 15, 30, 60, 90, and 120 days after socket preservation, using histologic and histomorphometric analyses.
  
  
  RESULTS
  The main finding showed that all groups presented similar results with minor differences regardless of the use of CTG and type of bone substitute. A greater amount of residual graft particles was found when ABB was used. No differences in the histologic and histomorphometric analysis were found when comparing the use of CTG with NCTG for ridge preservation procedure.
  
  
  CONCLUSIONS
  Within the limitations of this animal study, the use of CTG to overbuild the buccal plate at time of tooth extraction did not affect the quality of bone regeneration.
authors.affiliation: *Chairman, Department of Periodontology, School of Dentistry, Cientifica del Sur University, Lima, Peru. †Resident, Department of Implantology, School of Dentistry, Cientifica del Sur University, Lima, Peru. ‡Head of Implant, Department of Periodontology, School of Dentistry, Cientifica del Sur University, Lima, Peru. §Professor, Department of Periodontology, University of Monterrey, Monterrey, Mexico. ¶Clinical Assistant Professor, Department of Oral & Maxillofacial Surgery, New York University College of Dentistry, New York, NY. ‖Clinical Investigator, Bluestone Center for Clinical Research, New York University College of Dentistry, New York, NY.
authors.forename: Gerardo
authors.initials: G
authors.lastname: Mendoza-Azpur
authors.forename: Allinson
authors.initials: A
authors.lastname: Olaechea
authors.forename: Marialuisa
authors.initials: M
authors.lastname: Pinazo
authors.forename: Cesar
authors.initials: C
authors.lastname: Gomez
authors.forename: Elmer
authors.initials: E
authors.lastname: Salinas
authors.forename: Manuel
authors.initials: M
authors.lastname: de la Rosa
authors.forename: Ismael
authors.initials: I
authors.lastname: Khouly
mesh_terms: D000539:Alveolar Process / Q000033:anatomy & histology / Q000601:surgery*; D000818:Animals; D018786:Bone Substitutes / Q000627:therapeutic use*; D002417:Cattle; D003238:Connective Tissue / Q000637:transplantation*; D004285:Dogs; D006882:Hydroxyapatites / Q000627:therapeutic use; D016378:Tissue Transplantation / Q000379:methods*
chemical_list: D018786:Bone Substitutes; D006882:Hydroxyapatites; C074950:hydroxyapatite-beta tricalcium phosphate