Fig. 3

a, b) Interceptive extraction of the upper left primary canine in an 11-year-old patient has been followed by eruption of the palatal displaced sector three 23 over a follow-up period of 12 months (upper and lower panels, respectively). In contrast, the buccal palpable 13 has remained unerupted. Does interceptive extraction of the maxillary primary canine help facilitate eruption of the permanent canine or simply speed the process up?