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VOL. 8, ISSUE 2 (2026)
Comparative evaluation of crown–root angle and labial surface angle of mandibular central incisors in class i and class ii malocclusions: A cross-sectional CBCT study
Authors
Dr. Hitesh Kakde, Dr. Bhavesh Kothari, Dr. Kamlesh Garg, Dr. Churi Disha Deepak
Abstract
Variations in crown–root morphology,
particularly Collum Angle (CA) and Labial Surface Angle (LSA), influence
orthodontic biomechanics, torque expression, and bracket positioning. This
retrospective cross-sectional CBCT study was conducted on 45 patient records
selected from the archives of the Department of Orthodontics and Dentofacial
Orthopaedics. The subjects were equally divided into three groups based on
skeletal malocclusion: Class I, Class II Division 1, and Class II Division 2,
with 15 subjects in each group. Sagittal CBCT sections of mandibular central
incisors were analyzed to measure Collum Angle and Labial Surface Angle using
standardized anatomical landmarks and reference axes. The results demonstrated
statistically significant differences in Collum Angle among the three groups,
with the highest mean values observed in Class II Division 2 malocclusion,
followed by Class II Division 1, while Class I malocclusion exhibited the
lowest values. Labial Surface Angle also showed significant intergroup variation.
Indicating that increased crown–root angulation was associated with altered
labial surface morphology.
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Pages:76-82
How to cite this article:
Dr. Hitesh Kakde, Dr. Bhavesh Kothari, Dr. Kamlesh Garg, Dr. Churi Disha Deepak "Comparative evaluation of crown–root angle and labial surface angle of mandibular central incisors in class i and class ii malocclusions: A cross-sectional CBCT study". International Journal of Dental Sciences, Vol 8, Issue 2, 2026, Pages 76-82
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