Extra Canals in a Lower Second Premolar.
Morphology December 14th, 2005
Here’s an extremely rare tooth. If this were a first premolar, this type of lower premolar with three seperate canals and foramina exists 0.5% of the time1.
Lower second premolars would occur like this less than that. As far as I know, there hasn’t been a large enough population of these teeth to determine a precise prevalence.
Footnotes:
- Vertucci FJ: Root Canal Morphology of Mandibular Premolars, J Am Dent Assoc 97:47, 1978. [↩]
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http://amanation.yolasite.com/ AMA Nation