• Preeyaporn Srimawong, D.D.S., Grad.Dip.in Clin.Sc., M.S.
• Anchali Krisanachinda, B.Sc. (Hons), M.Sc., Ph.D.
• Jira Chindasombatjaroen, D.D.S., Grad.Dip.in Clin.Sc., Ph.D.

Objective To assess the accuracy of linear measurements from stitched and non-stitched cone beam
computed tomography (CBCT) images in comparison to direct measurements.

Materials and methods Ten dry human mandibles were marked with gutta-percha at reference
points to obtain five vertical and five horizontal distances. CBCT using stitching and non-stitching
programs were performed. All distances on CBCT images obtained using stitching and non-stitching
programs were measured and compared with direct measurements. The intraclass correlation
coefficients (ICCs) were calculated.

Results The intraobserver ICCs of direct measurements were 0.998 to 1.000, and those of
measurements on both non-stitched and stitched CBCT images were 1.000. The intermethod ICCs
between direct measurements versus non-stitched CBCT images and direct measurements versus
stitched CBCT images ranged from 0.972 to 1.000 and 0.967 to 0.998, respectively. No significant
differences were found between direct measurements and stitched or non-stitched CBCT images (p > 0.05).

Conclusion Linear measurements from stitched and non-stitched CBCT images were accurate
compared with direct measurements.

(CU Dent J. 2015;38:93-104)