Please activate JavaScript!
Please install Adobe Flash Player, click here for download

implants - international magazine of oral implantology

I research Fig. 1_Sinus with elevated membrane. Fig. 2_Allogeneic bone soaked in blood. _Introduction Thisstudyaimedtoassesstheeffectivenessofex- ternal sinus floor elevation in 36 patients with se- verely atrophic posterior maxillae using allogeneic freeze-dried cortical granulate (Osteograft®, ARGON Medical).Implantswereplacedinasecondsessionaf- terameantimeof7.6months.Asthestudyshows,the use of allogeneic cortical granulate in external sinus augmentation showed successful clinical results combined with great properties. It seems to be a reli- ablematerialforreconstructionofaseverelyatrophic posteriormaxilla.Itpresentsagoodalternativetoau- togenous bone in sinus augmentation because of good ossification, less morbidity, unlimited availabil- ity, shorter duration of surgery as well as lower costs. Implantspreparationbysinusfloorelevation Inordertosufficientlyinstalldentalimplantsinat- rophic maxilla, preparative surgical procedures are often necessary. Successful osseointegration of im- plants depends on a suitable quantity and quality of surrounding bone. One of these procedures is the sinus floor elevation. First described by Tatum and Boyne1, 2 , it presents a very common preprosthetic surgery in dentistry. A grafting material is placed be- tween the sinus floor and the lifted sinus membrane, resultinginanaugmentationofverticalbone.Various articles have been published describing different grafting materials.3-6 Implants are installed in a sec- ondoperationifprimarystabilityoftheimplantscan- not be achieved. A minimum bone height of four to fivemillimetresisnecessarytofulfilthecriteriaofpri- mary stability.7 Less bone height results in the neces- sity of a two-step approach. Usageofallogeneicbone Present gold standard is the use of autogenous bone, defined by donor and acceptor being the same individual.8, 9 It presents osteoconductive, osteoin- ductive and osteogenetic properties.8-10 However, at the same time it requires additional surgery, associ- atedwithcorrespondingrisks,complicationsandad- ditionalmorbidities.Also,durationandthereforecost of surgery rise. Harvesting bone from extraoral sites, e.g. the iliac crest, also demands general anaesthesia. In some cases, autogenous bone is limited.11-14 Due to existenceofvariousdisadvantages,alternativegraft- Use of allogeneic cortical granulate for external surgical sinus floor elevation Author_Dr Phillip Wallowy & Dr Karam Kass-Elias, Germany 14 I implants2_2014 Fig. 1 Fig. 2

Pages Overview