The “Wits” appraisal of jaw disharmony

Differential treatment effects of two anchorage systems for rapid maxillary expansion: a retrospective cephalometric study

“…Vergrößerung des SNA-Winkels mit im Mittel 2,17°am deutlichsten bei skelettalen Klasse-IIIPatienten, die mit der ,,Hybrid-Hyrax''behandelt wurden Differential treatment effects of two anchorage systems for rapid maxillary expansion… previously reported data [1,3,8,14,24,62,67]. Another option-whether alternatively to ANB or as an additional linear parameter [34]-to determine the anteroposterior jaw relationship would be Wits appraisal [32,33]. Despite the availability of studies on the pros and cons of these two methods [29,36], opinions as to which of the two should be preferred are clearly divided [53].…”

A study on craniofacial morphology of Japanese subjects with normal occlusion and esthetic profile

“…From the lateral cephalometric radiographs of the 100 subjects, ten were randomly selected and used for calculation of the error in setting the measurement points in two mea- 15 Wits mm McNamara 12 Nasion perpendicular to point A mm Effective mandibular length (Cd-Gn) mm Effective midfacial length (Cd-A) mm Maxillomandibular differential mm Downs 16 Facial angle ° Angle of convexity ° A-B plane angle ° Y-axis ° Cant of occlusal plane ° Interincisal angle ° Incisor-occlusal plane °G raber 17 FH to SN ° SNP ° U1-SN °J arabak 18 Saddle Legan 22 Facial convexity angle (G-Sn-Pg′) ° Maxillary prognathism (G-Sn (HP)) mm Mandibular prognathism (G-Pg′ (HP)) mm Lower face/throat angle (Sn-Gn′-C) ° Lower vertical height/depth ratio (Sn-Gn′/C-Gn′) % Nasolabial angle ( Tables 3-6. Of the principal components with a minimal eigenvalue of not less than 1.0, we focused on parameters with an absolute factor loading value of not less than 0.6.…”

Geometrischer Einfluss der sagittalen und vertikalen Kieferbasen auf den ANB-Winkel

“…Verschiedene Studien beurteilen jedoch die Wertigkeit dieses Winkels kritisch [4,8,10,11,16]. Es wurde gezeigt, dass die Größe des ANB-Winkels durch die relative Länge der Strecke Sella-Nasion [1,2,8], die Neigung der Kieferbasen [8] und die anteriore Gesichtshöhe [1] beeinflusst wird. Hussels & Nanda [6] stellten fest, dass der vertikale Abstand des A-bzw.…”

“…This angle was first introduced by Riedel [13] as the difference between the SNA and SNB angles. However, various studies took a critical view of this angle's validity [4,8,10,11,16], demonstrating that the ANB angle's size is influenced by the relative length of the sella-nasion line [1,2,8], the inclination of the dental bases [8] and the anterior facial height [1]. Hussels & Nanda [6] found that the vertical distance between points A and B and the nasion also exerted a substantial influence on the ANB angle.…”