Cellular titanium implant for jaw bone defect replacement

The article suggests the technique of constructing a transplant to compensate the loss of lower jaw bone tissue. We chose the cellular structure of the transplant, which allows restoring vital functions to the patient in the shortest possible time. The implant design consists of the following steps: 1. On the basis of X-rays of the affected jaw, we constructed a 3D geometric model of the lost bone fragment. 2. On the basis of X-rays of the affected jaw, statistical data, clinical experience, and available information about the patient's jaw state before its destruction, we built a geometric full 3D model of the jaw before losing the bone fragment. 3. We obtained a 3D geometric model of the lost bone fragment of the lower jaw by subtracting a 3D model of the jaw without the bone fragment from the 3D model of the jaw before losing the bone fragment. A cellular structure was assigned to the 3D model of the lost bone fragment. 4. Using the ANSYS software environment we determined the deformations of the damaged jaw under the impact of the implant with a pre-selected form, size and periodicity of cells. We applied the force of 180 N to the implant, which corresponds to the nominal teeth force. We also considered the variant when the force applied by the teeth on the jaw reached 4000 N. For the chosen implant fixation means on the affected jaw and for the chosen parameters of the implant cell structure we determined that the deformations of the affected jaw are minimal for the nominal teeth forces applied to the jaw. This leads to the reduction of the patient's rehabilitation time. Bone tissue germination inside the implant cells can cause the increase of its volume (mass) two times. The developed technique can be used to create implants that compensate the loss of bone tissue of other human skeleton bones.