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Year : 2023  |  Volume : 12  |  Issue : 1  |  Page : 57

Photographic Frankfort plane subnasale pogonion (FSA) angle for assessment of anteroposterior discrepancies in malocclusion subjects: A prospective study

1 Department of Orthodontics and Dentofacial Orthopaedics, Saveetha Dental College, Chennai, Tamil Nadu, India
2 Department of Public Health Dentistry, Saveetha Dental College, Chennai, Tamil Nadu, India

Correspondence Address:
Ravindra Kumar Jain
162, Saveetha Dental College, Poonamallee High Road, Velappanchavadi, Chennai - 77, Tamil Nadu
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jos.jos_7_23

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INTRODUCTION: Anterior-posterior discrepancy assessment is a crucial component of orthodontic diagnosis and is often carried out using hard tissue cephalometric analysis. The purpose of this study was to compare the photographic Frankfort plane subnasale pogonion (FSA) angle with established cephalometric parameters to determine the accuracy of the angle in determining maxillomandibular anteroposterior discrepancies. MATERIALS AND METHODS: In this prospective study, a total of 60 subjects, 20 in each skeletal sagittal malocclusion, were included in the final sample based on the selection criteria. Both photographic and cephalometric records were taken, and the parameters assessed were the beta angle, Steiner's analysis, the ANB (A point- Nasion- B point) angle in the cephalograms, and the FSA angle in the profile photographs. Statistical analysis was done with SPSS software. The correlation between the measured parameters was assessed using Pearson's correlation test. RESULTS: A high positive and significant correlation between the FSA angle and beta angle (r = 0.793) was noted, and a high negative and significant correlation between the FSA angle and ANB angle (r = -0.848) was noted. CONCLUSION: The photographic FSA angle can be used as a reliable parameter to diagnose anteroposterior discrepancies.

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