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The distal root instrumentation - Courtesy ROOTS
Sent: Saturday, May 29, 2010 12:01 PM
Subject: [roots] Difficult case explanation
The distal root instrumentation, I divided into 3 phases (see pics attached)
1. work the straight part of the canal to get approximately #40 at the
beginning of the acute curve with out forcing any instruments into the
curve. This is quick and as I was doing this I used a #6 file to gently
enter the curve. With canal filled with liquid EDTA slowly work with
less than quarter turns, pre curved #6, #8, #10. During this time #10
tends to straighten so I stop before I can cause a ledge or transport the
canal, recapitulate with #6, #8 and then try to advance with #10
2. Work the bend: Essentially extending the #40 diameter 2mm into the bend
so the bigger stiffer files can go to WL without transporting.
3. Try to take larger SS K files #15, #20 to WL. #25 is too stiff for the bend
and tends to straighten. Niti 02 taper or Series 29 could be very useful from
what I hear from senior pros at this but I did not use them.
I worked till i could get a 06 cone to fit with endo ice to maintain the curve
on the GP. I'm chicken when it comes to squirting:))
Lots irrigant and keep going back to patency file in this case #6.` - Venkat