title: [Surgical dilemmas. Sinus floor elevation].
abstract: Limited alveolar bone height prevents the placement of dental implants. Sinus floor elevation is an internal augmentation of the maxillary sinus that allows implants to be placed. The principle of this surgical procedure is the preparation of a 'top hinge door', that is raised together with the Schneiderian membrane in the cranial direction. The space which created under this lid is filled with a bone transplant. Autogenous bone is the standard transplant material, despite the fact that a second surgery site is necessary. Under certain circumstances bone substitutes can be used, with a longer healing phase. If sufficient alveolar bone height is available to secure implant stability, simultaneous implantation and sinus floor elevation are possible. Considering the significant anatomical variation in the region of the maxillary sinus, a sound knowledge of the anatomy is of great importance.
authors.affiliation: Mondziekten en Kaakchirurgie van her Vrije Universiteit medisch centrum in Amsterdam/Academisch Centrum Tandheelkunde Amsterdam (ACTA), Amsterdam. chr.bruggenkate@vumc.nl
authors.forename: C M
authors.initials: CM
authors.lastname: ten Bruggenkate
authors.forename: E A J M
authors.initials: EA
authors.lastname: Schulten
authors.forename: S A
authors.initials: SA
authors.lastname: Zijderveld
mesh_terms: D001861:Bone Regeneration / Q000502:physiology*; D003758:Dental Implantation, Endosseous / Q000379:methods*; D016557:Guided Tissue Regeneration, Periodontal / Q000379:methods*; D006801:Humans; D008443:Maxillary Sinus / Q000033:anatomy & histology / Q000601:surgery*; D010012:Osteogenesis