A Tooth restorability index has been developed to assist the clinician in assessing the restorability of a tooth. Although this index has been developed for root-treated teeth, it is also intended for assessment of vital teeth. The influence of remaining coronal dentin on the survival of a restoration has not been documented. The index encourages reflection upon the unique needs of the patient and assists in the delivery of holistic patient centred-care. Each patient and their dental need is unique; like any guideline, the TRI exists to assist rather than rigidly dictate how a dental problem...