Analysis of Cause of Endodontic Failure of C-Shaped Root Canals

Table 2

Classification of C-shaped root canals.

	C1	C2	C3	C4	Total	Fisher’s exact test significance
Coronal level (%)	19 (45.2)	15 (35.7)	7 (16.7)	1 (2.4)	42 (100)
Apical 3 mm level (%)	15 (35.7)	7 (16.7)	19 (45.2)	1 (2.4)	42 (100)