Fig. 1

a Before orthodontic treatment. Intraoral photos were taken on 2 July 2010. b After orthodontic treatment. Intraoral photos were taken on 1 December 2012. c Follow-up check. Intraoral photos were taken on 13 December 2014
a Before orthodontic treatment. Intraoral photos were taken on 2 July 2010. b After orthodontic treatment. Intraoral photos were taken on 1 December 2012. c Follow-up check. Intraoral photos were taken on 13 December 2014