Reliability of two methods on measuring root canal curvature

Ya-qin Zhu, DDS, Ying-xin Gu, DDS, MSD, Rong Du, DDS, and Chen Li, DDS

The Ninth People’s Hospital, School of Stomatology, Shanghai Second Medical University, Shanghai, P. R. China

Purpose: This study was conducted to evaluate the reliability of Schneider’s and Weine’s methods by comparing the difference of root canal curvatures measured by three examiners.
Materials and Methods: Fifty-one selected premolars were measured by three trained graduates of endodontics respectively with Schneider’s and Weine’s methods. The results were analyzed with analysis of variance (ANOVA).
Results: Among the three examiners, the data were not significantly different (p>0.05), and linear correlation was found between the two methods (p=0.0001).
Conclusion: The results suggest that both the Schneider’s and Weine’s methods are reliable to determine the degree of root canal curvatures.
(Int Chin J Dent 2003; 3: 118-121.)

Clinical Significance: Either the Schneider’s or Weine’s method is reliable to determine the curvature of root canals.
Key Words: reliability, root canal curvature, Schneider’s method, Weine’s method.