A new approach of assessing sagittal discrepancies: the Beta angle

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Chong Yol Baik, Maria Ververidou

Abstract

An accurate anteroposterior measurement of jaw relationships is critically important in orthodontic diagnosis and treatment planning. The angular and linear measurements that have been proposed can be inaccurate because they depend on various factors. The purpose of this study was to establish a new cephalometric measurement, named the Beta angle, to assess the sagittal jaw relationship with accuracy and reproducibility. This angle uses 3 skeletal landmarks-point A, point B, and the apparent axis of the condyle-to measure an angle that indicates the severity and the type of skeletal dysplasia in the sagittal dimension. Seventy-six pretreatment cephalometric radiographs of white patients were selected on the basis of 4 criteria that indicate a normal Class I skeletal pattern; the mean and the SD for the Beta angle were calculated. This group was compared with Class II and Class III skeletal pattern groups. After using the 1-way analysis of variance and the Newman-Keuls test and running receiver-operating-characteristics curves, we obtained results that showed that a patient with a Beta angle between 27 degrees and 35 degrees can be considered to have a Class I skeletal pattern. A more acute Beta angle indicates a Class II skelet...Continue Reading

References

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Citations

Jun 1, 2018·BioMed Research International·Giuseppe PerinettiLuca Contardo
Sep 14, 2010·Journal of Applied Oral Science : Revista FOB·Guilherme JansonArnaldo Pinzan
Mar 20, 2018·BMC Oral Health·Gunjan Kumar ShresthaJamal Giri
Oct 6, 2018·American Journal of Medical Genetics. Part a·Didem DagdevirenJean-Marc Retrouvey
Feb 14, 2014·Journal of Orthodontics·Herman S Duterloo
Nov 15, 2018·Dental press journal of orthodontics·Maheen AhmedMubassar Fida
Feb 10, 2011·European Journal of Orthodontics·Wasundhara A BhadUmal H Doshi
Dec 28, 2012·Journal of Orthodontics·Santosh KumarPriyanka Jayaswal
Jun 22, 2019·The Journal of International Medical Research·Mushrath IslamAsilah Yusof
Nov 6, 2020·Journal of Pharmacy & Bioallied Sciences·Swaroopa R PonnadaShiva Praasad Mandaloju
Dec 24, 2019·International Journal of Clinical Pediatric Dentistry·Dandamudi LalityaSindura Allani
Nov 30, 2021·Journal of Orthodontics·Mayank KhandelwalSneha Karajagi

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