Improvement of surgical skills in students using a newly developed 3D printed osteotomy model of a partially retained wisdom tooth

Objectives Against the background of digitalization, practicing on 3-D models for dental education has become more important. To improve the surgical skills of dental students, this study aimed to develop a 3-D-printed model for osteotomy of a partially retained lower wisdom tooth and evaluate surgical skills of students with practical experience acquired through phantom exercises compared to students who acquired experience only by assisting oral surgeons. Materials and Methods We developed a 3-D model that allows dental students to perform an osteotomy of a partially retained real wisdom tooth in region 48. The model was evaluated by oral surgeons (OS; n = 5), students with phantom experience (PE; n = 26), and students with experience with clinical assistance (CE; n = 29). Additionally, student performance was rated. Results The OS, PE, and CE groups all evaluated the model as suitable for student courses, except for the gingiva mask. The CE group developed slightly better. In the exercise, the PE group showed better incision results, while the CE group was slightly better in the preparation of the working field. Conclusions The osteotomy model is suitable for hands-on courses for dental students, but the gingiva should be improved. However, phantom exercise cannot replace clinical experience. Clinical Relevance To improve education, knowledge and self confidence of students in dental school.