Fig. 6

Tooth carving practice. This photograph shows a comparison between conventional tooth carving practice (TCP) using a plastic model and step-by-step TCP using an augmented reality-based tool. The learner can observe the carving step in three dimensions by pressing the next step and previous step buttons. a: Plastic model from a tooth carving step model kit. b: TCP using the augmented reality-based tool in the first stage of the mandibular first premolar. c: TCP using the augmented reality-based tool in the final stage of the mandibular first premolar. d: Process of identifying ridges and grooves. IM, image marker; MD, mobile device; NSB, next step button; PSB, previous step button; SMD, stand of mobile device; TC, tooth carver; W, wax block