The patient is concerned about the discolored upper right canine, which should be associated with orthodontics 20 years ago.  The apical canal is obliterated (Fig.9 arrow) with periapical radiolucency (arrowhead).   RCT will be conducted, followed by internal bleaching.

Thin Bone Last Next Xin Wei, DDS, PhD, MS 1st edition 06/27/2019, last revision 04/11/2020