An understanding of tooth anatomy is an important cornerstone in providing successful
endodontic treatment. Detailed images of tooth anatomy using microcomputed
tomography allow measurements of pulpal floor anatomy, canal configurations, canal
dinemsions, root wall thickness, presence of calcifications, and apical anatomy. The aim
of this study of eighteen mandibular second molars using micro CT was to investigate
various aspects of tooth anatomy. The most frequently found mesial root canal
configuration was Vertucci Type 7 (1-2-1-2) in 33% of samples. Distal canals were most
frequently Vertucci Type 1(1), with 61% of samples showing this configuration. 11% of
samples had two canals, 44% of samples had three canals, 33% of samples had four
canals, and 11% of samples had five canals at some point along the root. On average,
root wall thickness between the mesiobuccal root and the furcation was the thinnest at
1.23 mm. The mesiolingual canal root wall thickness was on average 1.29 mm, and the
distal was 1.41 mm. 78% of samples had calcifications present in both the pulp chamber
and within the canals; 17% of samples were free from calcification in both the pulp chamber and within the canals; one (6%) sample had calcification in the chamber only.
Other reported data included canal dimensions at one millimeter increments along the
root, pulpal floor anatomy, and apical anatomy.
University of Minnesota M.S. thesis. August 2011. Major:Dentistry. Advisor: Dr. Scott McClanahan. 1 computer file (PDF) vi, 41 pages, appendix A.
Barsness, Sara A..
Anatomic investigation of the roots of second mandibular molars using micro CT..
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