An incomplete fill with voids will host a plethora of bacteria; however with good cleaning, shaping and packing will provide a 3 dimensional seal with an excellent prognosis.

Retreatments are more challenging as sometimes obstacles need to be overcome before the retreatment of the root canals can begin.  In this case the integrity of the crown and aesthetics was paramount.  A very small access was made through the crown.  Glass fibre posts were removed from all three canals.  I had to be very careful not to perforate while removing the fibre posts.  The retreatment was performed with the demonstration of a mid-root lateral canal.