A model for the teaching of clinical techniques in root canal treatment.

A practical model to aid the understanding and practice of endodontic techniques is described. The model uses extracted teeth mounted in light-cured acrylic resin and set in a preformed model tray. Before mounting, the root surfaces of teeth are dipped in wax to simulate the periodontal ligament space. This model allows endodontic techniques to be practised in the operative technique classroom in a way that simulates the clinical situation and enables radiographs of good diagnostic quality to be taken during treatment. Subsequently, teeth can be reset to allow restoration of the root-filled tooth.