title: Evaluation of bone height and bone density after tooth extraction: an experimental study in minipigs.
abstract: OBJECTIVE
  The objective of this study was to radiographically quantify bone density and bone height preservation in tooth extraction alveolus filled with xenograft.
  
  
  METHODS
  The maxillary and mandibular fourth deciduous molars and fourth premolars of 6 minipigs were removed. Randomly, in 3 animals the right side was used as the test side and in the other 3 animals the left side was the test side. Intraoral radiographs were performed to compare the condition at the initial time and 3 months later. Measurements of bone height and bone density were performed using KS300 (Zeiss) software.
  
  
  RESULTS
  After 3 months, there was a statistically significant smaller bone height loss for the test group. The test group presented a statistically greater bone density immediately after tooth extraction. However, after 3 months there was no statistically significant difference between the groups.
  
  
  CONCLUSIONS
  The results suggest that treatment of postextraction alveolus with xenograft can preserve bone height initially but differences in bone density compared to when no xenograft is used are not sustained.
authors.affiliation: Department of Orthodontics, Bauru Dental School, University of Sao Paulo, Bauru, Brazil.
authors.forename: Paula Vanessa Pedron
authors.initials: PV
authors.lastname: Oltramari
authors.forename: Ricardo de Lima
authors.initials: Rde L
authors.lastname: Navarro
authors.forename: José Fernando Castanha
authors.initials: JF
authors.lastname: Henriques
authors.forename: Rumio
authors.initials: R
authors.lastname: Taga
authors.forename: Tânia Mary
authors.initials: TM
authors.lastname: Cestari
authors.forename: Guilherme
authors.initials: G
authors.lastname: Janson
authors.forename: José Mauro
authors.initials: JM
authors.lastname: Granjeiro
mesh_terms: D016301:Alveolar Bone Loss / Q000000981:diagnostic imaging*; D000818:Animals; D015519:Bone Density; D016025:Bone Transplantation / Q000379:methods*; D002417:Cattle; D008297:Male; D008336:Mandibular Diseases / Q000000981:diagnostic imaging; D008439:Maxillary Diseases / Q000000981:diagnostic imaging; D011859:Radiography; D011897:Random Allocation; D013552:Swine; D013556:Swine, Miniature; D014081:Tooth Extraction; D020390:Tooth Socket / Q000033:anatomy & histology / Q000737:chemistry / Q000000981:diagnostic imaging*; D014183:Transplantation, Heterologous / Q000379:methods*; D016896:Treatment Outcome