Hatton J F, Ferrillo P J
J Endod. 1989 May;15(5):216-8. doi: 10.1016/S0099-2399(89)80239-0.
Conventional and surgical therapy was successfully performed on a traumatized two-rooted maxillary lateral incisor. The treatment and rational are discussed along with some probable causes leading to formation of secondary roots and canals in teeth that are normally single rooted with one canal.
