Review – GOM Measurement Methods on DruckWege Resins
Resin Review on the surface and volumetric properties of DruckWege DLP resins with highest accuracy. GOM develops, produces and distributes software, machines and systems for industrial and automated 3D coordinate technique. Our resins have been measured on an ATOS measurement unit. The scan and the GOM analysis software determines discrepancies of objects in proportion to the original model and the actual printed object. In a sum, this method helps to analyse the resin accuracy of our several product types.
Determination of the Resins’ Precision
A really big advantage for DruckWege is that optical measurements display the accuracy of the end results of the print and can be proven while small deviations between the printed model and the optimal 3D model can be represented.
Here shown on the example Type D clear / pigment-free. The dot density of the GOM measurement is 0.06 mm.
The scan shows the surface measurements and represents the areal deviations between the (original) model and the printed model. The model was printed with 0.05mm slice resolution in Z-axis. The accuracies are impressively large. Deviation is on average below 100-150 microns. The advantage of this method is the non-contact and highly accurate measurement of the surfaces.
Type D Dental Model – High Precision Modelling
The upcoming Type D Dental Model Resin is specifically designed for dental laboratories that want to work on the one hand with fast reactive resins in the area of 3D printing and at the same time pursue a reliable modeling alternative to the cutting or molding processes commonly used in dental prosthetics , The Dental Model Resin is designed exclusively for model work, e.g. adjust drill or gingiva masks. It is characterized by a particularly smooth surface and a flesh-colored complexion. In addition, it awakens the user’s feel of gypsum.
Here, too, our measurements showed highly precise properties (unscaled), which were on average around 250 microns.
Low Shrinkage at DruckWege Type D Flex Resin
The average shrinkage data of DruckWege resins is 2-3%. The example of Type D PRO Flex also clearly shows that the volume deviations are very low compared to the optimal original in digital form. Again, the deviations are +/- 150 microns in the surface comparison.
This allows a variety of possibilities in the use of resins with functional requirements.
3D Printing Resins for Dental Modeling and Functional Prototyping
The results show that the Type D resins are in surface inaccuracies below 100-250 microns, which is a predictable size and very small deviation for precision work in use with the resins. Most printers offer software scaling capabilities to make the model more fitting and closer to the original model. The software is able to absorb the inaccuracies in the Z-axis backlash. In the above examples, all samples were unscaled and not post-cured, neither by UV nor by temperature exposure, which is necessary to form a reference for the resin accuracy measurements.
The above example was examined based on the free model, downloadable from Thingiverse, author sarpdental.