From: Marga Ree
To: ROOTS
Sent: Friday, June 18, 2010 6:41 AM
Subject: [roots] Easy retreatment

This young female patient was root canal treated on 21 and 22 back in 1997. She sustained a trauma when she was a kid.
The GP did an attempt to stop the resorption on 21 by doing a rct, however, he could not find the canal, and stopped
in time, I think..

Patient was referred to me for advice. We recommended retreatment of 22 and monitoring 21.  The location of the
radiolucency was unusual.

The foramen was wide, size # 80, my rule of thumb is to use MTA if the foramen is > 70-80. However, I could create a
tapered apical prep, and was not sure if I could pack MTA in that lateral canal. I used resilon instead. Appeared to
work out fine.  - Marga



very good marga!!!! - Nuno

Nice case Marga :)  is this a Lightspeed in the canal? - Hani

Thanks Hani!  Yes, I always use Lightspeed (the previous version)  for working length determination and gauging the
foramen when treating a tooth with a wide foramen. Gives me a better sense of the  size of the apical foramen.  - Marga