A case of extensive internal resorption of the left mandibular first p
remolar in a 24 year old man is reported. The case presented with slig
ht discolouration and mobility of the tooth. On radiological examinati
on extensive internal resorption and a fracture line at the cemento en
amel region was observed, separating the crown and root. The case was
treated endodontically after surgical removal of the fractured fragmen
t of the crown.