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

Table 1

Comparison of patient data.

	Control group	Research group	or
Age
BMI (kg/m^2)
Gender
Male/female
Smoking
Yes/no
Drinking
Yes/no
Regular eating habits
Yes/no
Long stay up late
Yes/no
Tooth position (total calcified root canals 124/130)
Front teeth/premolars/molars
o
Upper root canal/middle root canal/apex
Nationality
Han/minority