Orbito-Condylion and Orbito-Basion Lines as Alternatives to Frankfurt and Sella- Nasion Lines in Cephalometry
Publish place: Iranian Journal of Orthodontics، Vol: 17، Issue: 1
Publish Year: 1401
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ORTHO-17-1_009
تاریخ نمایه سازی: 23 خرداد 1401
Abstract:
Aim: Frankfurt horizontal and Sella-Nasion lines are the most widely accepted and used landmarks in cephalometric analysis. This study investigates the use of the Orbito-Condylion line extending from the Orbitale to the Condylion as a novel horizontal line for substituting the Frankfurt horizontal line. Similarly, the evaluation of the Orbito-Basion line as an alternative to the Sella-Nasion line in cephalometric analysis was done. We evaluated the reproducibility of the new horizontal lines and measured the angle between the Orbito-Condylion line and the Frankfurt line; and the angle between the Sella-Nasion and Orbitale-Basion line.Methods: This investigation was carried out on ۳۰ individuals. The Porion, Orbitale, Condylion, Sella, Nasion, and Basion were identified and marked. The angles between the orbito-meatal line (inferior orbital rim to the Porion; the Frankfurt line) and the Orbito-Condylion line (inferior orbital rim to the Condylion) were measured. Likewise, the angles between the Sella-Nasion line (center of sella tursica to Nasion) and the Orbito-Basion line (inferior orbital rim to Basion) were measured.Results: Significant interobserver and intraobserver bias did not exist. The mean angle between the Frankfurt line and Orbito-Condylion line was ۰.۵°±۲.۲۷° and the mean angle between the Sella-Nasion line and Orbito-Basion line was ۳.۴۸°±۳.۱۱°.Conclusion: This study showed the new lines have good reproducibility, reliability, and efficacy. The Orbito-Condylion and Orbito-Basion lines are reliable, reproducible, and easily identifiable, and has the potential as novel standard horizontal lines to supersede or complement the Frankfurt line and Sella-Nasion line in anthropological studies and clinical applications.
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Authors
Hosur Krishnaiah Vedavathi
Department of Orthodontics, V S Dental College & Hospital, Bengaluru, India
Priyanka Roy
Department of Orthodontics, V S Dental College & Hospital, Bengaluru, India
Prasanna Kumar Shashanka
Department of Orthodontics, V S Dental College & Hospital, Bengaluru, India
Sowmya Kyathanahalli Subbaiah
Department of Orthodontics, V S Dental College & Hospital, Bengaluru, India