Prevalence and Morphology of C-Shaped Canals: A CBCT Analysis in a Korean Population

Table 2

Number and percentage of study subjects with C-shaped canals in the mandibular second molars by gender, unilateral, or bilateral status.

	Unilateral
	Left, (%)	Right, (%)	Bilateral, (%)	Total, (%)
No. of patients
Female ()	46 (6.9)	30 (4.5)	249 (37.6)	325 (49.0)
Male ()	26 (4.4)	28 (4.7)	148 (25.0)	202 (34.2)
Total no. of patients ()	72 (5.7)	58 (4.6)	397 (31.7)	527 (42.0)

Data were expressed as the number and percentage. Distribution of sample ratios among each subgroups was analyzed using the chi-squared test and significantly different ( value < 0.001).