Table 1.

Case reports on three independent mesial canals of first mandibular molar.

Author, year	Evaluation technique	Number of teeth
La et al., 2010 [6]	CBCT	1
Yesilsoy et al., 2009 [9]	PA radiographs	1
Mortman and Ahn, 2003 [10]	PA radiographs	1
Holtzman, 1997 [11]	PA radiographs	1
Ricucci, 1997 [12]	PA radiographs	1
Jacobsen et al., 1994 [13]	PA radiographs	1
Bond et al., 1988 [14]	PA radiographs	1
Martinez-Berna and Badanelli, 1985 [15]	PA radiographs	1

CBCT: cone beam computed tomography, PA: periapical.