Study between anb angle and Wits appraisal in cone beam computed tomography (CBCT)
Open Access
- 1 January 2013
- journal article
- Published by Medicina Oral, S.L. in Medicina Oral Patología Oral y Cirugia Bucal
- Vol. 18 (4), e725-e732
- https://doi.org/10.4317/medoral.18919
Abstract
To analyse the ANB and Wits values and to study correlations between those two measurements and other measurements in diagnosing the anteroposterior maxilo-mandibular relationship with CBCT. Ninety patients who had previously a CBCT (i-CAT®) as a diagnostic register were selected. A 3D cephalometry was designed using one software package, InVivo5®. This cephalometry included 3 planes of reference, 3 angle measurements and 1 linear measurement. The means and standard deviations of the mean of each measurement were assessed. After that, a Pearson's correlation coefficient has been performed to analyse the significance of each relationship. When classifying the sample according to the anteroposterior relationship, the values obtained of ANB (Class I: 53%; Class II: 37%; Class III: 10%) and Wits (Class I: 35%; Class II: 56%; Class III: 9%) did not coincide, except for the Class III group. However, of the patients classified differently (Class I and Class II patients) by ANB and Wits, a high percentage of individuals (n=22; 49%), had a mesofacial pattern with a mandibular plane angle within normal values. A correlation has been found between ANB and Wits (r=0,262), occlusal plane angle and ANB (r=0,426), and mandibular plane angle and Wits (r=0,242). No correlation was found between either Wits or ANB in relation with the age of the individuals. ANB and Wits must be included in 3D cephalometric analyses as both are necessary to undertake a more accurate diagnosis of the maxillo-mandibular relationship of the patients.Keywords
This publication has 24 references indexed in Scilit:
- Accuracy and repeatability of cone-beam computed tomography (CBCT) measurements used in the determination of facial indices in the laboratory setupJournal of Cranio-Maxillofacial Surgery, 2009
- Three-dimensional accuracy of measurements made with software on cone-beam computed tomography imagesAmerican Journal of Orthodontics and Dentofacial Orthopedics, 2008
- Accuracy of three-dimensional measurements using cone-beam CTDento maxillo facial radiology, 2006
- Properties of the ANB angle and the Wits appraisal in the skeletal estimation of Angle's Class III patients.European Journal of Orthodontics, 2002
- A comparison of ANB, WITS, AF-BF, and APDI measurementsAmerican Journal of Orthodontics and Dentofacial Orthopedics, 1991
- Longitudinal changes in the ANB angle and Wits appraisal: Clinical implicationsAmerican Journal of Orthodontics, 1983
- Adjusting A-N-B angles to reflect the effect of maxillary position.Published by Wiley ,1981
- Predicting the “Wits” appraisal from the ANB angleAmerican Journal of Orthodontics, 1980
- Application of the “Wits” appraisalAmerican Journal of Orthodontics, 1976
- Changes in the relationship o f nasion, point A, and point B and the effect upon ANBAmerican Journal of Orthodontics, 1969