maxgraft® bonebuilder is a patient customized allogenic bone block for two-stage alveolar ridge augmentation. Based on CT/CBCT scans of the patient, the bone block is virtually designed using the latest 3D-CAD/CAM (computer-aided design/computer-aided manufacturing) technology to provide a precise fit between local bone and allograft. CT/CBCT scan data in DICOM format is converted to .stl files. The bone block is then virtually designed by the botiss CAD-designer team using Geomagic FreeForm software. To check the design and to measure the block dimensions, the clinical user receives a 3D PDF file containing the virtually constructed maxgraft® bonebuilder block. After final design approval and written order the final product is milled from processed cancellous bone blocks originating from living human donors (explantation of femoral heads during hip endoprosthesis surgery). maxgraft® bonebuilder are planned in close interaction between the clinical users and the botiss CAD-designers with multiple feedback loops to ensure a perfect fit. All communication and ordering is mainly done via email using the comment section on each individual order web page on www.botiss-bonebuilder.com.