This lower second molar case is a few weeks old but illustrates the point about time. The first clinical is after the case has been completely (or so I thought) prepared. The MB and MM canal "emptied" together when backdrawing on the irrigation syringe, but the ML did not empty. 15 minutes of doing nothing but NaOCl and a little patency, and voila, they all drain together. Think there might have been some crud down there? I took one last look around--and what a moron--I had missed the DB canal and it still had tissue in it. - John A. Khademi More .......Current weekly newsletter
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