Table 2.

Questionnaire

1	Pre-prosthetic exercise
1.1	How realistic do you consider the caries excavation on the 3D printed training teeth? VAS (very unrealistic – very realistic)
1.2	How realistic do you consider the placement of the core build-up on the 3D printed practice teeth? VAS (very unrealistic – very realistic)
2	Preparation
2.1	How do you assess the tactile feeling during the preparation of the 3D printed practice teeth? VAS (very unrealistic – very realistic)
2.2	How do you assess the tactile feeling during the preparation of KaVo/Frasaco typodont teeth? VAS (very unrealistic – very realistic)
3	Learning process
3.1	How do you assess the learning process during preparation exercises with 3D printed practice teeth? VAS (very bad – very good)
3.2	How do you assess the learning process during preparation exercises with KaVo/Frasaco teeth? VAS (very bad – very good)
4	Learning success
4.1	How do you assess the learning outcome of preparation exercises with 3D printed practice teeth? VAS (very bad – very good)
4.2	How do you assess the learning outcome of preparation exercises with KaVo/Frasaco typodont teeth? VAS (very bad – very good)
5	Assessment of the training
5.1	How do you assess the suitability of the 3D printed training teeth as preparation for patient treatment? VAS (very bad – very good)
5.2	How do you assess the suitability of the KaVo/Frasaco typodont teeth as preparation for patient treatment? VAS (very bad – very good)
5.3	For my studies, I would like to have more practice exercises with 3D printed training materials. VAS (totally disagree – totally agree)
5.4	I can imagine completing the entire training to prepare for patient treatment exclusively with 3D printed training materials. VAS (totally disagree – totally agree)
6	Free text questions
6.1	What could still be improved on the 3D printed practice teeth?
6.2	What advantages do you think 3D printed training materials offer in dental education?

Q1.1 and Q1.2 only included in H1