University research: 3D tooth fillings showed better fit values.
A team of researchers from several Finnish universities conducted a research of the accuracy of dental fillings based on 3D printing versus CAD/CAM milling. Among the team were two of the founders of RAYO 3DToothFill Ltd. The results of the research were that fillings manufactured with 3D printing showed better marginal and internal fit values. The mean internal gap values of the 3D printed fillings were 40-60% lower compared to the milled fillings, the difference being statistically significant at most measuring points.
Read a research summary presented in International Association of Dental Research in London June 2018: