The “contents of practical training” was also significantly affected by the change in models, especially from plaster models to mannequins. Many dental schools in the Unites States have used mannequins for more than 10 years, but their specifications and the effects of their use remain unclear . Mannequins have been used to take 73.7% and 57.9% of all primary and final impressions, respectively, in Spain and Portugal . It therefore seems that the use of mannequins has not achieved a high degree of legitimacy. Mannequins are effective for bridging the gap between the laboratory and clinical setting, which, in addition to the learning effects, helps students develop a clearer understanding of actual treatment procedures. The use of different models might contribute to an improvement in the overall evaluation of practical training.