Method for preparing artificial femur specimen by using polymethyl methacrylate (PMMA)
A technology of polymethyl methacrylate and femur, which is applied in the field of materials for medical experiments, to achieve the effect of avoiding high cost, good performance and avoiding anatomical differences
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[0021] 1. Using 16-slice spiral CT to scan the normal femur continuously along the transverse section, a total of 384 layers of images were obtained, which were directly stored in accordance with the Dicom3.0 standard, and then the 3D reconstruction model of the complete femur was made using Mimics software;
[0022] 2. Use UG software to fractal the specimen to be processed, then sort and determine the tool path, and then use CNC milling to make a femur shape mold, and the same method to make a medullary cavity mold;
[0023] 3. Fill the raw wax in the cavity mold, and put an electric furnace wire in it in advance to make a model of the wax cavity, and then put it into the shape mold;
[0024] 4. At a room temperature of 25°C, pour PMMA into the shape mold, and PMMA is blended according to the ratio of self-setting dental tray powder: dental tray water at a ratio of 1:1.5;
[0025] 5. After the PMMA is cured, the electric furnace wire is energized to bake the raw wax inside a...
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