From 2011-2017, images and videos of "The Root Canal Anatomy Project" were developed at the Laboratory of Endodontics of Ribeirao Preto Dental School - University of Sao Paulo - under supervision of Dr Manoel Sousa Neto. From 2016, images were acquired in other educational institutions. They can be freely used for attributed noncommercial educational purposes by educators, scholars, student and clinicians. It means that all material used should include proper attribution and citation ( In such cases, this information should be linked to the image in a manner compatible with such instructional objectives. Unfortunately, because material shared on the RCAP has not been properly cited by several users, from November 2019 a watermark was added to the images and videos. Enjoy!

March 4, 2011

Mandibular Third Molar

Anatomically unpredictable, the mandibular third molar must be evaluated on the basis of its root formation. Wellformed crowns are often supported by fused, short, severely curved, or malformed roots. Most teeth can be successfully treated endodontically, regardless of anatomic irregularities, but root surface volume in contact with bone is what determines long-term prognosis. The clinician may find a single canal that is wide at the neck and tapers to a single apical foramen. Access is gained through the mesial aspect of the crown. Distally angulated roots often permit less extension of the access cavity. Difficult accessibility in the arch occasionally can be simplified by the use of engine-mounted files on reciprocal handpieces. All caries, leaking restorations, and pulpal calcifications should be removed and replaced with adequate temporary restoration. If the tooth is in heavy occlusal function, full cuspal protection is indicated postendodontically (Burns RC, Buchanan LS. Tooth Morphology and Access Openings. Part One: The Art of Endodontics in Pathway of Pulp, 6th Ed. p. 164).



Keywords: micro-computed tomography, micro-ct, marco versiani, micro-computer tomography, high resolution x-ray tomography, dental anatomy, root canal anatomy

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