title: Horizontal maxillary sinus septa: An uncommon entity.
abstract: BACKGROUND
  Maxillary sinus septas are barriers of cortical bone that arise from the floor or from the walls of sinus and may even divide the sinus into two or more cavities. Morphologically maxillary sinus septa are generally oriented in buccopalatinal orientation horizontal or sagittal orientation of the sinus septa is a rare condition.
  
  
  METHODS
  This report presents two sinus lift case, in which observed septa in a horizontal orientation was presented. Both cases were fixed by an implant supported prosthethic restoration.
  
  
  CONCLUSIONS
  Surgeons must know detailed knowledge about maxillary sinus anatomy for successful sinus augmentation. Computed tomography (CT) is useful for examining the maxillary sinus.
  
  
  CONCLUSIONS
  Horizontal-type sinus septa are rarely seen. Surgeons must be aware of septa types and orientations.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Bulent Ecevit University, Zonguldak, Turkey.
authors.forename: Uğur
authors.initials: U
authors.lastname: Gülşen
authors.affiliation: Baku, Azerbaijan.
authors.forename: İlham
authors.initials: İ
authors.lastname: Mehdiyev
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Black Sea Technical University, Trabzon, Turkey.
authors.forename: Cem
authors.initials: C
authors.lastname: Üngör
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey.
authors.forename: Mehmet Fatih
authors.initials: MF
authors.lastname: Şentürk
authors.affiliation: Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ankara University, Ankara, Turkey. Electronic address: ugrgulsen@gmail.com.
authors.forename: Ali Direnç
authors.initials: AD
authors.lastname: Ulaşan
keywords: Horizontal; Maxillary sinus; Septa