A New Anatomically Based Nomenclature for the Roots and Root Canals—Part 2: Mandibular Molars

Table 1

Table summarizing the variations of roots and the canal anatomy of mandibular molars, as reported by various authors, with the numerous terms that have been used to name these aberrancies.

Root nomenclature	Root canal nomenclature	Reference
M, DB, MD, DL	MB, ML, DB, MD, DL,	[5]
M, D	MB, ML, MD, DB, DL	[15]
M, DB, DL	MB, ML, DB, DL, MD or third distal	[12]
M, D	MB, MM, ML, D	[16]
M, D	MB, MM, ML, DB, DL	[13]
M, D	M, D	[11]
Radix entomolaris		[17]
Radix paramolaris		[18]
MB, ML, D	MB1, MB2, ML1, ML2, DB, D, DL	[7]
MB, ML, DB, DL	ML, MB, DL, MD, DB1, DB2	[10]
M, DB, DL	2 mesial, 3 distal	[19]
M, D	4 mesial canals, 1 distal canal	[20]
	Mesiocentral canal	[21]
M, D	MB, ML, 3rd mesial, DB, DL	[22]
M, DB, DL	MB, ML, 2DB, 1DL	[9]

M—mesial, MB—mesiobuccal, ML—mesiolingual, MM—middle mesial, D—distal, DB—distobuccal, DL—distolingual, MD—middle distal.