3D cephalometry on reduced FOV CBCT: skeletal class assessment through AF-BF on Frankfurt plane—validity and reliability through comparison with 2D measurements

Cristina Grippaudo, Marco Farronato, Cinzia Maspero, Andrea Abate, Stephen Thaddeus Connelly, Gianluca Martino Tartaglia

Risultato della ricerca: Contributo in rivistaArticolo in rivistapeer review

2 Citazioni (Scopus)

Abstract

Objectives To test the validity of a novel protocol for 3D sagittal jaw discrepancy assessment (skeletal class determination) through comparison with common 2D indexes by the use of reduced FOV (10 × 10) CBCT which shows at least from the Frankfurt plane to the B point vertically, and from the most anterior between A and B point to Po point horizontally. Methods A sample of CBCT scans of 109 adult patients (46 females; 63 males; mean age 30 years ± 11.6) equally distributed between I, II and III class was selected. Skeletal class was evaluated with specific software using the distance of A and B point’s projection (AF-BF) on FHp (Frankfurt horizontal plane) and compared to 2D common indexes (ANB andWitts appraisal). The validity and reliability of the aforementioned analyses were determined using intra-class correlation coefficients, quadratic weighted Cohen’s K and sensitivity. Result A selected range of values of 2.5 ± 2.5 AF-BF showed a solid correlation with the ANB angle (r = 0.846, K = 0.838, p < 0.001) and moderate with Wits appraisal (r = 0.723, K = 0.720, p < 0.001). Conclusions AF-BF showed high reliability in skeletal class determination on reduced FOV CBCT without the use of S and N cephalometric landmarks.
Lingua originaleEnglish
pagine (da-a)6295-6302
Numero di pagine8
RivistaEuropean Radiology
Volume2020
DOI
Stato di pubblicazionePubblicato - 2020

Keywords

  • CBCT
  • Cephalometry

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