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

Table 2 Estimation accuracy of working length measurement closest to real values in a range of 0.5mm tolerance level recorded on CBCT and digital radiographic images

Tolerance level		Degree of curvature		Total %	P value*
Tolerance level		Moderate 10°–25°	Severe 26°–70°	Total %	P value*
CBCT image 0.5 mm	Yes	26 60.5%	7 41.2%	33 55%	0.18**
CBCT image 0.5 mm	No	17 39.5%	10 58.8%	27 45%	0.18**
Digital image 0.5 mm	Yes	25 48.8%	7 41.18%	32 53.3%	0.92**
Digital image 0.5 mm	No	18 51.2%	10 58.82%	28 46.7%	0.92**

ISSN: 1472-6831