Related Experiment Video
Updated: May 30, 2026
Reliability of Artificial Intelligence-Based Cone Beam Computed Tomography Integration with Digital Dental Images
Published on: February 23, 2024
Measuring buccolingual inclination of mandibular canines and first molars using CBCT
W Shewinvanakitkul1, M G Hans, S Narendran
1Department of Orthodontics, Case School of Dental Medicine in Cleveland, Cleveland, OH, USA.
Objectives:
To develop a reliable method to measure buccolingual inclination of mandibular canines and first molars, and to evaluate a possible correlation between buccolingual inclination with their respective interdental width.
Methods:
The sample consisted of 37 boys and 41 girls untreated orthodontic patients averaging 13.2±0.96 years. A line tangent to the inferior border of the mandible and the long axis of the tooth measured buccolingual inclination. Intercanine and intermolar widths were measured on casts.
Results:
Reliability (ICC) values were >0.94. The mean mandibular canine inclination was 98.0±4.1°, with mean width 26.0±2.2 mm. The mean mandibular molar inclination was 74.6±4.7° with mean width 40.9±2.7 mm. First molar inclination of Class II molar subjects (73.7±4.2°) was significantly less (p≤0.05) than of Class I subjects (75.6±4.9°). There were low correlations between interdental width and buccolingual inclination.
Conclusions:
A practical and reliable method to measure buccolingual inclination of mandibular canines and first molars is here described using Cone Beam Computed Tomography and a commercially available DICOM software.
