Severe curvature : Tough MB1 and MB2 - Courtesy ROOTS
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From: Mark Dreyer
Sent: Thursday, September 03, 2009 9:45 PM
Subject: [roots] Severe curvature
First case of the day. Hopefully this won't turn out to be the easiest
case of the day. The mb1 and mb2 were just as tough to instrument as
This doc posts every tooth. I put ultra-cal in the post space I leave
for him - Mark Dreyer, DMD
Mark, hell of a curvature... nicely managed!
As for posting every tooth... well, it's better than posting every
canal (yikes!) what i see a frequent
technique in my town.. Dmitri
Great case Mark, keep it up! - Jose
Mark Dreyer- Endo stud! Really nice case. - Arturo
Dear Mark, Incredible work as always.
Can you comment on your instrumentation protocol for the mesial
buccal canals? - Patrick Wahl
Thanks guys. Patrick, as usual I did the gg thing, size 2-5.
Then I created my glide path to a 20. This went pretty
straightforward in the mb1, but in the mb2 it required use of
several pre-curved 6 C files and some exquisitely delicate
probing to finally get past the curve. Once there, I left
the 6 in place and ran the M4 a good 30 seconds with liquid
edta in the canal. I repeated the efforts with precurved
files of increasing size up to a size 20, using the m4 less
time as I increased my file size so as to minimize the
risk of transportation. Once the glide path thing was done,
I used S1 S2 F1 F2 protapers taking them as far as they would
go without any pressure to speak of, cognizant of the fact
that any extra pressue would likely result in leaving a
souvenir behind. I then went through 20/.12, .10, .08, 06
GT's, then I used a 30/.04 k3 and finally a 20/04 GT.
Yes that's a lot of files, but I don't do single use so it is
affordable. I always use a lot of files on my cases and figure
that I'm placing less stress on each file because of this,
so use each file 3 times. Breakage isn't an issue....maybe
4-5 files/yr out of 800-1000 cases - Mark Dreyer