Additively manufactured casts & gypsum casts share same accuracy for fabrication of casts: Study

The results of this study are:

Eight studies evaluating tooth-supported fixed dental prosthesis casts and 7 studies evaluating implant-supported fixed dental prosthesis casts were eligible for this review. Gypsum casts showed greater accuracy (trueness and precision) in most studies, although additively manufactured casts also yielded highly precise data. One study was associated with a low risk of bias, 9 with a moderate risk of bias, and 5 with a high risk of bias.

Thus, the researchers concluded that in vitro studies showed that additively manufactured casts and gypsum casts share similar accuracy within the acceptable range for the fabrication of casts. The quality of scanned data, additive manufacture technology, printing settings, and postprocessing procedures plays an essential role in the accuracy of additively manufactured casts. Clinical studies are required to confirm these findings.

Reference:

Digital versus conventional workflow for the fabrication of physical casts for fixed prosthodontics: A systematic review of accuracy by Hian Parize et al. published in the Journal of Prosthetic Dentistry.

https://www.sciencedirect.com/science/article/abs/pii/S0022391320307988