19/11/2025
๐ ๐ด๐ฟ๐ฒ๐ฎ๐ ๐ฐ๐ฎ๐๐ฒ ๐ณ๐ฟ๐ผ๐บ ๐ผ๐๐ฟ ๐๐ข๐ ๐ฟ๐ฒ๐ด๐ฎ๐ฟ๐ฑ๐ถ๐ป๐ด ๐๐ต๐ฒ ๐ณ๐ถ๐ฟ๐๐ ๐บ๐ผ๐น๐ฎ๐ฟ ๐
"A patient came to us for a follow-up visit regarding the first molar."
After removing the amalgam filling and restoring the lateral wall, we opened the pulp chamber and found 4 canals, which we then prepared.
In your opinion, based on the video of the chamber, what can we expect and what should we do?
As most people here mentioned, we're dealing with a missing canal. Okay, but how did we know that? We knew from the arrangement of the canal orifices we found. We always know that the access cavity in a lower molar is trapezoidal, with its larger base on the mesial side. Therefore, the distal canals are always located within the distal extension of the line connecting the two mesial canals (except in the case of Radix, where the distance between the two distal canals is greater).
Here, if we look carefully, we can see that we don't have that. This made us suspect the presence of a third mesial canal, and the canals we were missing were the ML and MM.
Now, back to the MB: if we look closely, we can see how clear the canal entrance is, thanks to the color of the dentin covering it, which we can distinguish from the floor of the pulp chamber. This is very helpful in cases where we have calcification in the canal orifices.
And of course, here we didn't use an ultrasonic tip to remove it. A red 6% TC gold file from VIDEYA was sufficient to remove it and open the canal.
We then continued preparation with red and yellow 4% TC_rainbow files, without using any manual files. This confirms that calcification in the canal orifices, significant recession of the pulp chamber, or the presence of pulp stones does not necessarily mean we are dealing with narrow canals.
