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[The AS/BS occlusal angle, a replacement for the ANB angle].

A Demisch, R Hügli

    Schweizerische Monatsschrift Fur Zahnheilkunde = Revue Mensuelle Suisse D'Odonto-Stomatologie
    |November 1, 1977
    PubMed
    Summary

    The ASBS/Occlusal angle and "Wits" appraisal accurately measure sagittal jaw discrepancies. Standardized landmark identification improves cephalometric analysis for various malocclusions.

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    Area of Science:

    • Dentistry
    • Orthodontics
    • Cephalometric analysis

    Context:

    • Cephalometric analysis is crucial for diagnosing sagittal jaw discrepancies.
    • Existing methods for measuring jaw relationships can have limitations in accuracy and reproducibility.
    • Standardization of landmark identification is essential for reliable cephalometric measurements.

    Purpose:

    • To introduce standardized procedures for locating cephalometric landmarks (A, B, Mo, AS, BS).
    • To evaluate the accuracy and behavior of the ASBS/Occlusal angle and "Wits" appraisal in determining sagittal jaw discrepancies.
    • To compare these measurements with the ANB angle across different malocclusion classes.

    Summary:

    • Standardized landmark identification enhances the anatomical accuracy of cephalometric analysis.
    • The ASBS/Occlusal angle and "Wits" appraisal precisely determine sagittal jaw discrepancies.
    • These methods demonstrate reliable behavior in ideal cases and various malocclusions (Class II/1, II/2, III).

    Impact:

    • Recommends the ASBS/Occlusal angle or "Wits" appraisal as preferred cephalometric measurements for sagittal jaw relationships.
    • Standardized landmark identification protocols improve diagnostic precision in orthodontics.
    • Facilitates more accurate treatment planning for patients with jaw discrepancies.

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