Volume 24, Issue 106, November - December, 2020

Diagnostic value of five cephalometric analysis in recognition of class I, II, and III sagittal patterns

Abdolmohammad Gachkooban¹, Mina Moalemnia^2♦

¹Assistant Professor, Department of Orthodontics, School of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
²Graduate Resident, Department of Restorative Dentistry, School of Dentistry, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

^♦Corresponding author
Department of Restorative Dentistry, School of Dental Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Email: mmlmnya@gmail.com

ABSTRACT

Background and Objective: Controversy exists over superiority of cephalometric analyses in diagnosis of skeletal classes. The aim of the present study was to compare diagnostic value of cephalometric analyses of class I, II, III anteroposterior jaw discrepancies. Materials and methods: A total of 90 cephalographs (n=90×3) were retrieved from the database of radiological clinic and classified into three study groups: Group I (Class I, n=30), Group II (Class II, n=30), and Group III (Class III, n=30). The cephalographs were traced manually. A-B plane, ANB angle, Wits appraisal, AF-BF, and cephalometric indices in McNamara’s anteroposterior measurements, including maxillary (Co–A) and mandibular (Co–Gn) unit length and their difference were analyzed. Diagnostic values of these analyses were measured; statistics were analyzed using McNemar, correlation, and Kappa coefficients (α=0.05). Results: In the Class I group, A-B plane angle showed the highest sensitivity (90%) and accuracy (76.7%), In the Class II group, ANB angle showed the highest sensitivity (86.7%) and accuracy (85.5%). In the Class III group, Wits appraisal showed the highest sensitivity (90%) and accuracy (96.7%). Conclusion: Downs, Downs/Steiner, and Downs/AF-BF analyses can be more reliably used for assessment of class I, II, and III sagittal patterns, respectively.

Keywords: Diagnostic value, cephalometric analyses, sagittal pattern, malocclusion

Medical Science, 2020, 24(106), 4116-4124

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