Retromolar Canal Associated with Age, Side, Sex, Bifid Mandibular Canal, and Accessory Mental Foramen in Panoramic Radiographs of Brazilians

Table 2

Descriptive statistics of the age variant according to the number of retromolar canals on both sides.

Retromolar canal		%	Age
			Minimum	Maximum	Average	Standard deviation
Right side
No canal	469	93.8	7	20	13.77	4.66
1 canal	29	5.8	7	20	12.28	4.82
2 canals	2	0.4	8	10	9.00	1.41
Left side
No canal	477	95.4	7	20	13.77	4.67
1 canal	23	4.6	7	20	11.50	4.30
Retromolar canal
Absent	458	91.6	7	20	13.83	4.66
Unilateral	32	6.4	7	20	12.30	4.57
Bilateral	10	2.0	7	20	10.92	4.40