Analysis of Pharyngeal Airway Using Lateral Cephalogram vs CBCT Images: A Cross-sectional Retrospective Study

Abstract

Background : As the basic biological relationship of form and function, changes in the normal pattern of nasopharyngeal space can profoundly affect the development of the craniofacial growth. The lateral cephalogram, part of the patient’s normal records for orthodontic treatment, may show some of these changes either at the initial examination or later during treatment. The validity of the information the lateral cephalogram may present, have been questioned previously. The aim of this study was to assess correlation between the area and the volume measurements of pharyngeal airway size in a lateral cephalogram and a 3-dimensional (3D) cone-beam computed tomography (CBCT) scan in adolescent subjects. Materials and Methods : CBCT scan and a lateral cephalogram of 35 subjects which were taken within 1 week were included in this study. Airway area of the region of interest from the lateral cephalogram and airway volume over the same of region of interest from the CBCT scan were assessed for all patients. The correlation between the area and the volume measurements were evaluated statistically by Pearson’s correlation coefficient test. Mann Whitney U Test was used for comparing the area and the volume measurements in different sex. Results : Strong correlation was found between lateral cephalogram and CBCT measurements of pharyngeal airway. (r=0.831). Conclusion : Pharyngeal airway area on a lateral cephalogram is correlated strongly with volumetric data on CBCT images. Henceforth the use of CBCT images for volume measurements in orthodontic patients can aid in the better evaluation of airways and acted as a diagnostic instrument in this area.

Are three-dimensional airway evaluations obtained through computed and cone-beam computed tomography scans predictable from lateral cephalograms? A systematic review of evidence

“…Of these articles, 18 were considered potentially eligible after title and abstract screening. Upon consultation of the full texts, consequently, 11 [18][19][20][21][22][23][24][25][26][27][28] of 18 studies met all the inclusion criteria ( Figure 1). Table 3 presents the demographic characteristics of the included studies.…”

“…Of the 11 studies, 7 evaluated the correlation between the LCs and CBCT (upright) scans in the different segments (Table 5). [22][23][24][25][26][27][28] Nasopharyngeal segment. A weak to strong correlation with a wide range of correlation coefficients was reported between LCs and CBCTs.…”

Comparación de distancias interradiculares y grosor del hueso cortical en dos sectores del maxilar inferior para colocación de mini implantes

“…Debido a la insuficiencia de espesor de hueso encontrado a diferentes alturas del hueso alveolar, algunos estudios determinan la importancia de evaluar la morfología alveolar con imágenes tomográficas antes del tratamiento de ortodoncia en situaciones cuando el tratamiento requiere colocación de mini implantes, ya que provee mayor exactitud e información adicional acerca de la conformación dentoalveolar (18)(19)(20)(21)(22)(23)(24).…”

Digitale Volumentomografie – Möglichkeiten und Grenzen in der regulären (primär nicht-chirurgischen) kieferorthopädischen Diagnostik und Therapie

“…6) [21]. In der Literatur finden sich Hinweise, dass die 2D-Auswertung der oberen Luftwege auf Basis von Fernröntgen-Seitenaufnahmen (FRS) sehr gut mit der Auswertung in 3D auf DVT-Daten korreliert [18,22]. Daher kann man wohl schlussfolgern, dass die 3D-Analyse den schweren Fällen und vor allem älteren Patienten vorbehalten werden sollte.…”