Skip to main content

Table 2 Results of the in vivo experiments.

From: In vivo assessment of the impedance ratio method used in electronic foramen locators

  Position of file tip using RL as reference [mm] (number of canals studied in vivo)
  -3.0 (7 canals) -2.5 (7 canals) 2.0 (7 canals) -1.5 (7 canals) -1.0 (18 canals) -0.5 (14 canals) 0 (21 canals)
Frequency [Hz] Mean STD Mean STD Mean STD Mean STD Mean STD Mean STD Mean STD
250 (Z6) 1 0 1 0 1 0 1 0 1 0 1 0 1 0
500 (Z5) 0,929 0,024 0,935 0,021 0,931 0,022 0,923 0,019 0,917 0,021 0,899 0,020 0.861 0.019
1000 (Z4) 0,862 0,037 0,869 0,036 0,862 0,035 0,850 0,033 0,839 0,033 0,808 0,035 0.724 0.030
2000 (Z3) 0,789 0,044 0,797 0,044 0,789 0,041 0,775 0,039 0,759 0,041 0,722 0,045 0.598 0.028
4000 (Z2) 0,772 0,049 0,784 0,051 0,772 0,047 0,756 0,048 0,735 0,048 0,694 0,053 0.533 0.023
8000 (Z1) 0,712 0,056 0,747 0,077 0,711 0,066 0,692 0,071 0,669 0,062 0,634 0,069 0.454 0.032
  1. Mean and standard deviation (STD) values of the in vivo spectra acquired with the file tip position at -3, -2.5, - 2.0, -1.5, -1.0, -0.5 and zero millimeter from the AF. The mean and STD are unit less because the normalized spectra are relative to the 250 Hz frequency component.