English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Even before Edward H Angle1 introduced his classification of malocclusion to the profession in the early 1900s, the sagittal relation of maxilla to mandible was one of the most important diagnostic criteria in orthodontics. Many angular and linear measurements have been incorporated into various cephalometric analyses to help the clinician diagnose sagittal jaw discrepancies. A number of geometric parameters, such as ANB angle, Wits appraisal, and Beta angle have been defined and used effectively for the same. In each of these parameters, a specific and different reference points and planes are used, which can affect the level of agreement between these diagnostic tests to assess the sagittal relationship. The first step in evaluating sagittal jaw relationship was Downs’ description2 of points A and B in 1948. A few years later, Riedel3,4 measured the S-N-A and S-N-B angles, using nasion as a reference point and used their difference, i.e., angle A-N-B, as an expression of dental apical base relationship. Since then, the A-N-B angle has been widely adopted as a principal method for evaluating sagittal jaw relationship. Wits assessment was introduced by Jacobson5 in 1975. Wits appraisal is a linear AO–BO distance between points A and B projected perpendicularly on the functional occlusal plane. Wits appraisal is time tested,6,7 and an integral part of cephalometric analysis. In 2004, Baik and Ververidou8 proposed the Beta angle. It uses three skeletal landmarks – point A, point B, and the apparent axis of the condyle (C) as a reference point to measure an angle that indicates the severity and the type of skeletal dysplasia in sagittal dimension. This angle is also tested9 and now routinely used in orthodontic diagnosis. In 2009, Neela et al10 introduced the sagittal dysplasia indicator Yen angle. This measurement is based on the landmarks, point M (midpoint of the anterior maxilla), point G (center at the bottom of the symphysis), and point S (midpoint of the sella turcica) as reference points, which form the Yen angle measured at point M. ABSTRACT

Comparative Evaluation of Yen Angle and W Angle with ANB Angle, Wits Appraisal, and Beta Angle for Predicting Sagittal Jaw Dysplasia: A Cephalometric Study