Contrasting Responses Following Transverse Root Fractures in Two Maxillary Central Incisors: (a) Marginal Breakdown With Superimposed Infection and (b) Transient Internal Surface and Tunnelling Resorption. A Case Report of Management With a 34-Year 9-Month Follow-Up.

An example of contrasting responses in two root fractured teeth in a 16-year-old male seriously injured in a hit-and-run motor accident is documented over a 34-year 9-month period. Extended non-surgical endodontic management was necessary for one of the root-fractured central incisors that had developed an infective marginal breakdown, and by contrast, the contralateral incisor with a diagnosis of internal surface resorption and internal tunneling resorption was carefully monitored to ultimate resolution.