title: Quantitative and qualitative bone analysis in the maxillary lateral region.
abstract: OBJECTIVE
  The present study was conducted to assess the amount of bone present between root apices and the maxillary sinus floor in the maxillary lateral region, to compare the evaluations on cone beam computed tomography (CBCT) and orthopantomography (OPG), and to evaluate the bone density of the same region using three-dimensional images on CBCT.
  
  
  METHODS
  Fifty-one dental patients were recruited for the study. All subjects were partially edentulous. The distances from the maxillary premolars and molars apices to the maxillary sinus floor were assessed using CBCT and OPG. Color codes were assigned to the bone density of edentulous loci. Parametric and non-parametric tests were used for statistical analyses. A p value <0.05 was considered statistically significant.
  
  
  RESULTS
  The maxillary first and second molars recorded the shortest mean distances to the sinus floor, in contrast to the maxillary first premolar. The bone density of the maxillary lateral area increased from the maxillary first premolar to the second molar. No statistical significant differences were found between the evaluated sites.
  
  
  CONCLUSIONS
  Our results provide estimates of the minimal and maximal distances between teeth and sinus, as well as the average bone density in the maxillary lateral region. It is important that evaluation of a specific patient be performed during the preoperative planning of implants.
authors.affiliation: Department of Prosthodontics Technology and Dental Materials, Faculty of Medicine Carol Davila, University of Medicine and Pharmacy, Bd. Regina Maria, No. 98, Bl. 119, Sc. 1, Apt. 18, Sector 4, 705241, Bucharest, Romania. gecarmen2003@yahoo.com
authors.forename: Carmen Elena
authors.initials: CE
authors.lastname: Georgescu
authors.forename: Mugurel Constantin
authors.initials: MC
authors.lastname: Rusu
authors.forename: Mihai
authors.initials: M
authors.lastname: Sandulescu
authors.forename: Aurelia Magdalena
authors.initials: AM
authors.lastname: Enache
authors.forename: Andreea Cristiana
authors.initials: AC
authors.lastname: Didilescu
mesh_terms: D000328:Adult; D000368:Aged; D001641:Bicuspid / Q000000981:diagnostic imaging; D001837:Body Weights and Measures / Q000379:methods*; D015519:Bone Density; D054893:Cone-Beam Computed Tomography / Q000379:methods; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging*; D008443:Maxillary Sinus / Q000000981:diagnostic imaging*; D008875:Middle Aged; D008963:Molar / Q000000981:diagnostic imaging; D009066:Mouth, Edentulous / Q000000981:diagnostic imaging; D011862:Radiography, Panoramic / Q000379:methods; D014092:Tooth Root / Q000000981:diagnostic imaging; D055815:Young Adult