The Effect of File Size and Type and Irrigation Solutions on the Accuracy of Electronic Apex Locators: An In Vitro Study on Canine Teeth

Table 2

Basic statistics of the distance between the endodontic device and the apical constriction measured with the use of a steel file with the size of 30/22 mm for different irrigation solutions.

Irrigation solution	Endopilot	iPex NSK
2.0% NaOCl	0.51 ± 0.02	0.49 ± 0.02	1.604	0.184
5.25% NaOCl	0.50 ± 0.05	0.52 ± 0.01	−0.611	0.574
40.0% citric acid	2.10 ± 0.04	1.51 ± 0.08	11.693	<0.001
2.0% Gluco-chex	2.11 ± 0.05	1.99 ± 0.06	2.668	0.056
Isopropyl alcohol	0	0	—	—
3.0% H2O2	2.13 ± 0.03	2.02 ± 0.08	2.220	0.091
15.0% Endosal	1.37 ± 0.10	1.49 ± 0.06	−1.886	0.132
0.9% NaCl	2.07 ± 0.03	1.23 ± 0.05	24.362	<0.001

Statistically significant differences between the measurement results obtained with the use of the Endopilot and iPex NSK apex locators were observed in the 40.0% citric acid and 0.9% NaCl solutions ().