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Assessing sagittal discrepancies using beta angle, ANB angle and WITS appraisal: A cephalometric study
Nakul Nandakishor Mude1, Amit Kumar2, Gazala Irfan3
1Department of Orthodontics and Dentofacial Orthopedics, ESIC Dental College and Hospital, Kalaburagi, Karnataka, India.
Bioinformation
|February 9, 2026
Summary
The beta angle offers a more reliable method for assessing sagittal discrepancies in orthodontic patients compared to the ANB angle and Wits appraisal. This cephalometric tool aids in diagnosing Class I, II, and III skeletal patterns.
Area of Science:
- Dentistry
- Orthodontics
- Cephalometrics
Background:
- Accurate assessment of sagittal discrepancies is crucial for diagnosing skeletal patterns (Class I, II, III).
- Existing cephalometric tools like the ANB angle and Wits appraisal have limitations in specific clinical scenarios.
Purpose of the Study:
- To compare the reliability of the beta angle, ANB angle, and Wits appraisal in assessing sagittal discrepancies.
- To evaluate the applicability of these tools across different skeletal patterns (Class I, II, III).
Main Methods:
- A retrospective study involving 120 subjects categorized into Class I, II, and III skeletal patterns.
- Lateral cephalograms were analyzed using the beta angle, ANB angle, and Wits appraisal.
- Statistical analyses were performed to compare measurements between groups.
Main Results:
- Significant differences in beta angle measurements were observed across the skeletal pattern groups.
- The beta angle demonstrated greater consistency in assessing sagittal jaw relationships than the ANB angle and Wits appraisal.
- This improved consistency was particularly noted in cases with jaw rotations or occlusal plane changes.
Conclusions:
- The beta angle is a valuable and reliable tool for orthodontic diagnosis of sagittal skeletal relationships.
- It offers enhanced accuracy, especially when dealing with complex cases involving jaw rotations or altered occlusal planes.
- Further validation with larger, diverse populations is recommended.
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