SciELO - Scientific Electronic Library Online

 
vol.23 issue5Perception of attractiveness of missing maxillary lateral incisors replaced by caninesDo premolar extractions necessarily result in a flat face? No, when properly indicated author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Dental Press Journal of Orthodontics

Print version ISSN 2176-9451On-line version ISSN 2177-6709

Abstract

AHMED, Maheen; SHAIKH, Attiya  and  FIDA, Mubassar. Diagnostic validity of different cephalometric analyses for assessment of the sagittal skeletal pattern. Dental Press J. Orthod. [online]. 2018, vol.23, n.5, pp.75-81. ISSN 2176-9451.  https://doi.org/10.1590/2177-6709.23.5.075-081.oar.

Introduction:

Numerous cephalometric analyses have been proposed to diagnose the sagittal discrepancy of the craniofacial structures.

Objective:

This study aimed at evaluating the reliability and validity of different skeletal analyses for the identification of sagittal skeletal pattern.

Methods:

A total of 146 subjects (males = 77; females = 69; mean age = 23.6 ± 4.6 years) were included. The ANB angle, Wits appraisal, Beta angle, AB plane angle, Downs angle of convexity and W angle were used to assess the anteroposterior skeletal pattern on lateral cephalograms. The sample was classified into Class I, II and III groups as determined by the diagnostic results of majority of the parameters. The validity and reliability of the aforementioned analyses were determined using Kappa statistics, sensitivity and positive predictive value (PPV).

Results:

A substantial agreement was present between ANB angle and the diagnosis made by the final group (k = 0.802). In the Class I group, Downs angle of convexity showed the highest sensitivity (0.968), whereas ANB showed the highest PPV (0.910). In the Class II group, ANB angle showed the highest sensitivity (0.928) and PPV (0.951). In the Class III group, the ANB angle, the Wits appraisal and the Beta angle showed the highest sensitivity (0.902), whereas the Downs angle of convexity and the ANB angle showed the highest PPV (1.00).

Conclusion:

The ANB angle was found to be the most valid and reliable indicator in all sagittal groups. Downs angle of convexity, Wits appraisal and Beta angle may be used as valid indicators to assess the Class III sagittal pattern.

Keywords : Diagnosis; Cephalometry; Reliability; Validity.

        · abstract in Portuguese     · text in English     · English ( pdf )