Incidence and Anatomical Properties of Retromolar Canal in an Iranian Population: A Cone-Beam Computed Tomography Study

Table 2

Mean diameter of different retromolar canal types.

	Canal type
	Type Ia	Type Ib	Type II	Total
Frequency	10	16	29	55
Mean	0.70	0.94	0.53	0.68
Std dev.	0.17	0.38	0.19	0.31
Min	0.40	0.40	0.30	0.30
Max	0.90	1.80	0.90	1.80