[Retracted] EDTA Combined with C-Pilot Files and Microultrasound for Root Canal Calcification: Dredging Effect and Safety Analysis

Table 5

Comparison of incidence of ARs.

	Toothache	Inability to eat	Nausea and vomiting	Fever occurred	ARs
Control group	7 (10.29)	5 (7.35)	4 (4.41)	2 (2.94)	26.47%
Research group	3 (4.69)	3 (4.69)	2 (3.13)	0 (0.0)	12.50%
					4.068
					0.044