Normally mandibular molar teeth have two well differentiated roots that is one mesial and one distal. Third root is seen rarely either distally or mesially.
Mesial roots have two root canals and the distal has one root canal.
Where as in this case the molar has two canals in the mesial and two canals in the distal root that is there is a third root seen in the distal aspect.
Featured case:
A 40 year old patient from Canada reported to our dental office on 5th December 2007 reported with decayed teeth and pain on chewing in lower left side.
Large amalgam filling with secondary decay was seen on 36.Patient was advised to do root canal treatment and restoration with ceramic crowns.
During the root canal procedure, when the acess cavity was prepared it was seen that the tooth has four canals that is mesio – buccal, mesio – lingual, disto – buccal and disto – lingual. Hence to confirm it an IOPA radiograph was made which shows mesio – buccal and mesio – lingual in the mesial root and disto buccal canal seen extending into the disto buccal root and disto lingual canal seen extending into the disto lingual root. Hence it was confirmed that the tooth has four canals and three roots.
When the working length was assessed it was seen that all the canals were 24mm long and the disto lingual root, which was curved was difficult to access but with the help of state of art equipment preparation was successful.
All the four canals were prepared and obturated to the length of 24mm. |