Orthodontic treatments with individually manufactured active elements lead to better treatment results in shorter treatment times with fewer side effects. CAD programs and FE simulations are used to design individual orthodontic elements that can be produced quickly and cost-effectively using rapid prototyping technology and 3D printing in particular. This study shows that it is possible to plan and print objects e. g. in the form of springs and arcs with precalculated force development. The print parameters and the parameters of the selected simulation are decisive for the quality and properties of the printed object. In this study two different test setups were developed, which measured the force development of the elements with a gel sensor or with a load cell. Test objects were produced in the design of an expansion arch made of the materials PLA and PETG as well as tension springs/elastic chains made of the materials TPU and Filaflex with 3D printers. It was found that gel sensors are unsuitable for measuring forces in dentistry due to lack of consistency, while load cells have been found to be suitable. Planned/simulated force developments correlated significantly to the force developments of printed expansion sheets made of PLA and PETG materials. Furthermore, a significant correlation from simulated to measured force was demonstrated for elastic chains/springs made of TPU. The TPU material was suitable for the individual production of elastic tension springs as a ...