title: The maxillary sinus floor in the oral implantology.
abstract: The aim of this study was to establish the mean distances between the maxillary sinus floor and the roots of the lateral maxillary teeth in dentate subjects, respectively the mean height of the available bone for oral implant placement in the corresponding area, in edentulous ones.
  
  
  METHODS
  We determined the maxillary sinus floor position in relation to morphoclinical alveolodental benchmarks on 50 dry skulls, dentate 30 and edentulous 20, and correlations were performed by use of 40 CT-scans of the targeted area. In addition, 20 human adult cadavers were bilaterally dissected in order to bring topographical evidence at that level.
  
  
  RESULTS
  The data we obtained lead us to define three dentosinusal relations: tangent (close) relation 60.8%; distanced relation 25.6%; penetrating relation: 13.6%; three subantral classes in edentulous patients, emphasizing the direct relation of the age of the edentulism and the degree of bone resorption. We discuss the results we obtained from the viewpoint of their application in the field of oral implantology.
  
  
  CONCLUSIONS
  The maxillary sinus floor represents the danger zone for the oral implantology.
authors.affiliation: Clinical and Topographical Anatomy Department, Faculty of Dental Medicine, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania. vandanimigean@yahoo.com
authors.forename: V
authors.initials: V
authors.lastname: Nimigean
authors.forename: Vanda Roxana
authors.initials: VR
authors.lastname: Nimigean
authors.forename: Nicoleta
authors.initials: N
authors.lastname: Măru
authors.forename: D I
authors.initials: DI
authors.lastname: Sălăvăstru
authors.forename: Daniela
authors.initials: D
authors.lastname: Bădiţă
authors.forename: Mihaela Jana
authors.initials: MJ
authors.lastname: Tuculină
mesh_terms: D000328:Adult; D001837:Body Weights and Measures; D002102:Cadaver; D003757:Dental Implantation / Q000379:methods; D006801:Humans; D007575:Jaw, Edentulous / Q000000981:diagnostic imaging / Q000473:pathology; D008443:Maxillary Sinus / Q000000981:diagnostic imaging* / Q000473:pathology; D011859:Radiography