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Canal stone and mb2 in upper molar

The opinions and photographs within this web page are not ours. Authors have been
credited for the individual posts where they are -
From: Jörg Schröder
Sent: Saturday, October 29, 2005 3:38 AM
Subject: [roots] Canal stone and mb2 in upper molar

this one came in as an emergency. Tenderness to percussion and pain 
on warm. After removing the filling ther were several cracks. 
Adhesive build-up was done and RCT started. First, MB2 seemed to be 
no problem, as I could see a little groove on the pulpal floor right 
from the start. But after exploring bthe first 1,5 to 2 mm there was a
stop as if there was a wall. So I started to clean and shape the 
palatinal next. While exploring with a #10 handfile I felt like reaching 
the apex very easy at one time and after that there was an obsticle 
some mm before the apex. after more coronal flaring I could see a 
pulp stone inside the canal which I could move with a micro opener but the
pulp stone was bigger than the size of the canal. I crushed the stone 
with a #25 ISO US-File and after being smaller than the canal it plopped 
out like a fractured instrument. MB2 was still waiting for me ( arrgggh) 
I took a bur and followed the small fin to the mesial wall and: blood and 
lots of tissue.I thought i perfed, but after using irrigation I found 
the next chamber ( I felt like inside a pyramide) Looked like a small 
area of resorption to me, because the chamber extended to the 
mesiopalatinal aspect of the tooth. After removing the denti-bridge 
there were two seperated mesial canals. That has been another proove 
to me : they (mb2) almost always exist.

Sorry Carlos, some are out of focus ; ))))) - Jörg Schröder

Jorg.........Great photos and great documentation. What camera system again....flash? Very well done Jorg.....Glenn Thanks Glenn, Coolpix 4500, halogen 100w, Carr mirrors, White Balance with camera mounted on the scope. Btw, do you know if there is a difference in brightness between the flexible and the rigid carr mirrors. Do they have the same optical performance? - Jörg jorg, there is a small difference between the scratchless and the scratchable. Less light wiht the scratchless due to a small coating layer. I often switch to a scratchable to take a critical photo. there is no difference between flexible and rigid - Bill Thank you Bill - Jörg

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