First upper molar RE TREATMENT, 5 canals, DB2

This case was referred to me for a re-treatment of the upper first molar with apical periodontitis. I found 5 canals. Notice the unusual location of the MB2 at the entry of the palatal canal and a DB2 next to DB canal

It always seems impossible until it’s done.

PhD. MSc. Dr. Pablo Salmeron at Dr. Roze & Associates.