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!

December 1, 2019

Middle Mesial Canal: Rotary Preparation

The mesial root of mandibular molars commonly presents 2 main root canals [(mesiobuccal (MB) and mesiolingual (ML)], but the presence of an extra canal in this root, the so-called middle mesial (MM) canal, has been also reported in a percentage frequency ranging from 0.26% to 46.15% . Considering that MM canal lies within a thin developmental groove between the orifices of the MB and ML canals, troughing this groove under high magnification has been suggested in order to identify its presence. However, in a detailed morphological description of the mesial root of mandibular molars presenting MM canal, authors stated that the presence of a thin dentine thickness toward the furcation side of the MM canal at the orifice level (0.80–2.20 mm) would  increase the risk of root perforation after preparation with large-tapered instruments.

For more information click HERE or HERE or HERE

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