Lost wax casting patterns

for removable partial denture, bridge & crowns wax-up

While removable partial denture, bridge or crowns are commonly produced in ceramics or metal alloys, one of the main cost-efficient solutions turns to be the 3D printing of lost wax casting patterns.

The 3D printing of high resolution patterns allows the investment casting of removable partial denture, bridges or crowns in semi-precious metals.

High precision and excellent burn-out properties of 3D printing castable materials for direct metal investment casting or press able ceramics turns to be the more cost-efficient solution since it saves on dental expert time from manual wax modeling.

Additionally, the 3D printing ensures the repeatability of the design and a better adjustment of the removable partial denture, bridge or crowns.

Return over the investment

Generally speaking, and this is valid for all the applications, the ROI of moving to digital dentistry can be summarized in

  • Better precision and quality
  • Faster production cycle
  • Great results consistency, unbounded to the personal skills of the operator
  • Better efficiency, in terms of costs and time
  • Increased patient’s comfort through all the steps of the process

Productivity and costs samples for printing high resolution RPD casting patterns

Production throughput and costs forecasts are important indexes to be evaluated when it comes to choose the right machine.

Production time on a ProMaker LD10 Dental Plus 3D Printer
Number of RPD / Stellites 88
Material used PLASTCure Cast 300 HD
Total time @50μm LT (hours) 9h 40min
Time per part (@50µm) 6min 35sec
Cost per RPD / Stellite 0.54 €
Full platform material cost 47.40 €

Workflow for the creation of lost wax casting patterns

Dentist Lab Dentist
Get the scan of the patient mouth using an Intraoral 3D scanner like 3Shape Trios scanner *
On the scanned dental model, using dedicated CAD software, it’s easy and fast to design RPDs, bridges or crowns. **
Digitally place the 3D geometries on the build platform of the machine.
Automatic creation of the necessary supports as substructure to hold the geometries and avoid deformations.
On the machine, choose the material and right configuration, load the geometries in STL format and print the models
Starting from the printed parts, the dentist or technician can move forward with the casting of the final product using the traditional methods, but with the advantage of having a size-perfect part that will perfectly fit the patient’s mouth.

Note: A second possible workflow is based on the use of the 3D scan of an alginate mold created with traditional methods as alternative to the direct intraoral 3D scan.

3rd party software integration

To provide to its customers fully integrated solutions, from the dental scan to the part design, to the layout optimization to the printed part, Prodways collaborates with 3Shape, 3D scanners manufacturer (*) and CAD/CAM software developer (**/***), along with Materialise and Autodesk (***).

Prodways ProMaker LD and L series’ machine profiles and workspaces are available on all the most advanced software for dental application on the market.

Prodways machines and materials for printing lost wax casting patterns

3d dental printer LD10 & LD20
le materials have been developed for delivering smooth surfaces and lowest ash residues after burning. These characteristics, together with the industrial-level productivity of our MOVINGLight® printers, makes Prodways the right choice for printing lost wax casting patterns for medium to big dental labs.

Liquid resins for MOVINGLight® printers

ProMaker MOVINGLight® printers, unlike other DLP®/Stereolitography printers, use no consumables, making it possible to provide industrial-grade productivity while keeping ownership costs low.