Skip to main content

Table 1 Comparison of mean and standard deviation values of working length estimated on CBCT and digital radiographic images in relation to the degree of canal curvature angles

From: Root canal curvature as a prognostic factor influencing the diagnostic accuracy of radiographic working length determination and postoperative canal axis modification: an in vitro comparative study

  Degree of curvature
Mean ± SD
P value *
Moderate
10°–25°
Severe
26°–70°
Total
%
Digital image Overestimation
Closest to real length
Minimun to Maximun
N
20.86 ± 1.63
0.624 ± 0.409
0.2 to 2.3
43
20.43 ± 0.83
0.658 ± 0.293
0.3 to 1.2
17
20.72 ± 1.43
0.635 ± 0.374
0.2 to 2.3
60(100%)
0.27 **
0.75**
CBCT image Overestimation
Closest to real length
Minimun to Maximun
N
19.43 ± 1.22
0.675 ± 0.892
0.1 to 2.0
4
20.3 ±
0.80 ±
− 0.8
1
19.6 ± 1.13
0.7 ± 0.775
0.1 to 2.0
5(8.3%)
0.47**
0.91**
Underestimation
Closest to real length
Minimun to Maximun
N
19.83 ± 1.72
− 0.494 ± 0.306
− 1.0 to − 0.1
36
19.41 ± 1.02
− 0.638 ± 0.280
− 1.2 to − 0.2
16
19.70 ± 1.54
− 0.538 ± 0.303
− 1.2 to − 0.1
52(86.7%)
0.81**
0.12**
  1. *Independent t test
  2. **Not significant