Fig. 4From: Effect of an endodontic e-learning application on students’ performance during their first root canal treatment on real patients: a pilot studyGraphic of the treatment errors registered during students’ first root canal treatments on real patients during their first clinical endodontic course. The scale of the y-axis ranges from 0 to 20. Medians and quartiles represent the results of the three groups. Asterisks mark the level of significance (* for P < 0.05; *** for P < 0.001)Back to article page