Fig. 4
From: Expert consensus on imaging diagnosis and analysis of early correction of childhood malocclusion
a Supernumerary tooth with sharp protuberance in the nasopalatine canal; (b): supernumerary teeth accompanied with cyst; (c): 11 with curved root and inversion crown and root, which indicates the tooth is an impacted tooth; (d–f): 14 and 15 show impaction tendency
