View source for Sinus-lift procedure



==Overview==
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A '''sinus-lift procedure''' is a [[Surgery|surgical procedure]], performed by a [[Oral surgery|specialised dentist]], to augment [[Bone|bone mass]] in the top jaw ([[maxilla]]), which increases the likelihood of successful placement of [[dental implant]]s. Bone from another part of the body, such as the [[iliac crest]], is [[bone grafting|grafted]] in the bone (endosseous) below the floor of the [[maxillary sinus]]. In the upper jaw the amount of bone is reduced by the presence of the sinus. A number of techniques are used to increase the bone height:
# Onlay grafts
# Interpositional (Lefort I) grafts
# Inlay grafts for nasal floor
# Sinus-lift and grafting 

== History ==
Sinus-lift procedure was first performed by Dr. O.H. Tatum Jr. Boyne and James were the first to report their 4-year experiences with autogenous graft placed into the sinus and allowed to heal for 6 months, which was followed by the placement of blade implants. In 1986, Tatum described his techniques for raising the sinus membrane, from a [[Anatomical terms of location|lateral]] and from an [[Anatomical terms of location|inferior]] approach.  

== Surgical technique ==
Lateral approach is used commonly in the severely resorbed and thin ridge cases. A crestal incision is made with vertical extensions and the lateral aspect of the maxilla is exposed.  Then the [[osteotomy]] is completed. The lateral wall with the sinus membrane is rotated [[Anatomical terms of location|medially]] into the sinus. The sinus membrane can fold on itself when reflected medially. Implant sites can be prepared and implants placed at this stage. The medial part of the sinus is grafted first. After the implants have been placed, the remaining lateral part of the sinus defect is grafted. The flaps are relieved and closed primarily. The graft is left for 6-9 months. Implant placements should be delayed if they cannot be properly stabilised, to prevent complications.

== Complications ==
* Graft failure
* [[Infection]]
* [[Mouth|Oral]] antral [[fistula]]
* [[Sinusitis]]
* Tilting or loosening of implants

==References==
* Raghoebar GM, Timmenga NM, Reintsema H, Stegenga B, Vissink A. Maxillary bone grafting for insertion of endosseous implants: results after 12-124 months. ''Clin Oral Implants Res'' 2001; '''12(3)''': 279-86. PMID 11359486

==External links==
*[http://www.bioimplantes.com.ar/eng/treatment-atrophic-posterior-maxilla.php Laboratorio de Bioimplantes]
'''Educational Resources'''
*[http://www.osseonews.com/sinus-lift-or-no-lift/ OsseoNews.com]A detailed discussion on sinus lift procedures.



[[Category:Dentistry]]
[[Category:Oral Surgery]]
[[Category:Oral and maxillofacial surgery]]

[[ja:サイナスリフト]]

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