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Three-Dimensional Printed Tooth Model with Root Canal Ledge: A Novel Educational Tool for Endodontic Training
Rui Zhang1, Renjie Tang1, Sebastian Spintzyk2
1State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases, Department of Preventive Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
A new 3D-printed tooth model effectively trains dental students and specialists in managing root canal ledges, a common endodontic challenge. This innovative educational tool shows high success rates for ledge management practice.
Area of Science:
- Endodontics
- Dental Education
- 3D Printing Technology
Background:
- Ledge formation is a critical complication in endodontic therapy.
- A shortage of practical educational models hinders effective training for ledge management.
- Current training methods may not adequately prepare practitioners for this challenge.
Purpose of the Study:
- To develop and assess a novel 3D-printed tooth model for practicing root canal ledge management.
- To evaluate the model's effectiveness in improving skills for bypassing and correcting ledges.
- To compare the training outcomes between postgraduate students and endodontic specialists.
Main Methods:
- A natural tooth with curved roots was utilized and scanned via micro-computed tomography (μCT).
- A computer-aided design (CAD) K-file was used to create a ledge in the 3D reconstructed tooth model.
- The model was 3D printed and used in a hands-on workshop, followed by a questionnaire and success rate assessment.
Main Results:
- Postgraduate students achieved an 85% success rate in ledge management, while endodontists achieved 100%.
- Feedback from both groups was positive, indicating high model quality and training effectiveness.
- Statistical analysis (Mann-Whitney U test) showed no significant difference between student and expert performance (p > 0.05).
Conclusions:
- The developed 3D-printed tooth model is a valuable educational tool for endodontic ledge management.
- This model effectively addresses the need for hands-on practice in a challenging endodontic procedure.
- The findings suggest this novel model can enhance dental education and practitioner skills in managing root canal ledges.
