All to often I hear students and young dentists immediately try to determine a working length once the canal has been identified. There is a proper procedural sequence with specific chamber conditions that will allow for the most accurate working length measurement of the canal.
I have even heard some endodontists recommend trying to determine an accurate working length directly from a measurement of the root by means of a radiograph!
The importance of complete canal disinfection cannot be overstated. Complete accurate working length measurements are a valuable aspect of endodontic therapy.
This root measured to be 25.5mm.
What are your favorite means of electronic canal length determination?
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