Table 5. Distribution of additional canal-related variables in cases observed with direct contact to the canal in CBCT in relation to surgical treatment.

Parameter	Direct contact to canal in CBCT (n = 91)
	Surgical removal (n = 54)	Coronectomy (n = 37)
		Changed (n = 14)	Remained (n = 23)
Diameter of the canal lumen
constant	27 (50%)	2 (14%)	1 (4%)
> ½ of the size	22 (41%)	3 (21%)	6 (26%)
≤ ½ of the size	5 (9%)	9 (64%)	16 (70%)
Canal in a root bending
no	53 (98%)	10 (71%)	21 (91%)
yes	1 (2%)	4 (29%)	2 (9%)
Contact area between root and canal
< ½ of the root length	49 (91%)	13 (93%)	11 (48%)
≥ ½ of the root length	5 (9%)	1 (7%)	12 (52%)

CBCT, cone beam CT.