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| research 10 implants 4 2016 tubes (A-PRF®+) and centrifuged according to Choukroun’s protocol. A mucoperiosteal trapezoid flap was raised expos- ingthedefectarea.Neighbouringteethwerecleaned of any debris. Allogenic bone blocks weather, J bone or Iliac crest, were customised chairside and fixed to the recipient site with osteosynthesis screws. The block was further adjusted after fixation has taken place, making sure there were no sharp edges and keeping the graft at least 1 mm away from any tooth surface. A PRF was placed over the block and healing was done by primary intention. Sutures were Resilon (Glycolon 5-0). Postoperative medication was Imadrax (Amoxicillin), 1,000 mg twice a day for threedays,Ibumetin(Ibuprofen,400 mg)incombina- tion with 1,000 mg Pinex (Paracetamol) as needed. Six months later, when the implants were installed, survival of the graft was measured only by the inte- grationofthegraftfromaclinicalperspective,includ- ing no apparent pathology, bleeding from the graft during osteotomy and the possibility to place dental implants with or without minimal GBR. Results Noneofthepatientsreportedanyproblemsduring healing. All 19 bone blocks were integrated to the re- cipient site and bleeding at osteotomy after six months of healing gave a 100 % result. There was greatvariationinresorptionthatwasmeasuredfrom the head of the screw: nine cases showed no resorp- tion from the head of the screw, the remaining cases showed resorption ranging from 0.5 to 1.5 mm from the head of the osteosynthesis screw. Peripheral ar- easoftheblocks,however,canexhibitahigherdegree ofresorption,buttheywerenotmeasuredinanyway in this study. Discussion It must be noted that none of the grafts were used for vertical augmentation. This sample is a part of a biggersamplethatinvolvesmorecomplexboneaug- mentation with use of more types of biomaterials such as spongious allogenic bone, prefabricated or not.Inthebiggersample,therewerefailuresthatwere notpresentwhentheaugmentationwasstrictlyhor- izontal and done by corticospongious blocks alone, indicating that this is a very predictable procedure when done like described in this case series. The surgeon’s opinion is that resorption is related towidthoftheaugmentation,thicknessofthecortex on the corticospongious allogenic bone block after modification in the mouth, and area of the mouth, whereasthemandibleshowedmoreresorption.How- ever, the surgeon’s opinion is per se of low evidence, andthesetopicsshouldbeinvestigatedmoreinwell- planned studies._ Fig. 18 Fig. 19 Fig. 20 Fig. 21 contact Dr Dadi Hrafnkelsson Cand. Odont., M.Sc. Overtandlæge Godt Smil Odense/Horsholm Mogensensvej 24 c 5000 Odense, Denmark Tel.: +45 28874904 Fig. 18: Allogenic bone block, occlusal view. Fig. 19: Allogenic bone block, integrated after six months of healing. Figs. 20 & 21: Before and after surgical intervention. Literature Author details 42016 Tel.: +4528874904