Kenny KP, et al. – The purpose of the current study was to first develop a Core Outcome Set (COS) for Traumatic Dental Injury (TDI) in children and adults and secondly to establish what, how, when and by whom these outcomes should be measured. The data presented in this work showed a robust consensus process was used to develop an international COS for TDI in children and adults. This involved both generic and injury-specific results across all identified domains.