A 3D printer fabricates physical models from computer-aided design files by depositing materials layer by layer. It can produce models of skulls, mandibles, maxillae and teeth from CT scan data for uses such as surgical planning, research, and teaching. The process involves capturing a CT scan, converting the data to an STL file, and producing the 3D model using a printer that works by laying down a binder pattern on a powder surface in a build chamber in a series of thin layers.

1. MohammedAlmuzian
3D printing
What is a 3D printer?
A rapid prototypingmachine fabricates a PHYSICAL MODELfrom a computer aided design digital file…….or a 3D
CT scan image. - as a series of layers that are joined together (eg chemically or light-cured, or fused)
Rapid prototyping technologies
 3D printing plaster + binder
 Stereolithography photopolymer
Material types?
 Rigid /flexible
 Tough/brittle
Model types?
 •Skulls
 •Mandible
 •Maxilla
 •Tooth
Model uses?
 .Surgical planning
 .Research
 .Patient information
 .Teaching aid
Process stages
 Capture:Cone beam CT image Using: iCAT scanner
 Convert: DICOM file to STL Using: Maxilim
 Produce: 3D model skull Using: Z310 printer
How does 3D printing (Z310) work?
.
 BINDER pattern laid on surface of powder in the build chamber via the print-head – pattern is determined by
3D image cross-section
 POWDER from the feed chamber is then laid over thebinder pattern on surface of powder in build chamber
 process is repeated to build model via series of layers (90um)
Post-production processes
 .Remove model carefully
 .Re-cycle un-cured powder
 .Place model in oven (70ºC, 1hr)
 .Remove powder debris on model surface using compressed air
 .Apply syntheticresin coating