Accuracy and reliability of linear cephalometric measurements from cone-beam computed tomography scans of a dry human skull

Berco, Mauricio; Rigali, Paul H.; Miner, R. Matthew; DeLuca, Stephelynn; Anderson, Nina K.; Will, Leslie A.

doi:10.1016/j.ajodo.2008.08.021

Cited by 162 publications

(155 citation statements)

References 35 publications

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“…Many have found the process both accurate and reproducible 10,[17][18][19] Other studies have investigated linear measurements using CBCT images and support the accuracy of such measures. 15,[20][21][22][23][24][25] …”

Section: Introductionmentioning

confidence: 99%

Asymmetry assessment using cone beam CT

Sievers¹,

Larson

Gaillard

et al. 2012

The Angle Orthodontist

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Objective: To estimate possible differences in skeletal asymmetry between patients with skeletal Class I and skeletal Class II relationships. Materials and Methods: Cone beam computed tomography (CBCT) images were examined from 70 consecutive patients who presented for orthodontic care and fit the inclusion criteria. Asymmetry was quantified using an asymmetry index developed by Katsumata et al. Anatomic landmarks were defined and reference planes were established to determine the asymmetry of the landmarks using a constructed coordinate plane system. Thirty randomly selected patients were reanalyzed to assess the reliability of the method. Results: Statistical analysis did not find any significant relationship between asymmetry and A-P skeletal relationship for any of the landmarks. Asymmetry index scores were reproducible within a certain range of agreement for each landmark. Conclusions: Based on this study, the discrepant jaw growth resulting in a Class II skeletal pattern results in no more skeletal asymmetry than Class I skeletal patterns. (Angle Orthod. 2012;82:410-417.)

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Section: Introductionmentioning

confidence: 99%

Asymmetry assessment using cone beam CT

Sievers¹,

Larson

Gaillard

et al. 2012

The Angle Orthodontist

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“…The results showed the possibility of creating a retainer accurately on patient's teeth without an impression. Hence, in consensus with other techniques, working with digital replicas proved to be accurate and reliable [15] [16] [17].…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Orthodontic 3D Printed Retainers versus Thermoformed Retainers

Nasef¹,

El-Beialy²,

Eid³

et al. 2017

OJMI

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Background: The integration of the current technology of CBCT and 3D CAD/CAM technology has great potential in the field of orthodontics, which is not yet fully investigated. The purpose of this article is to evaluate the accuracy of 3D printed retainers in comparison to vacuum formed retainers. Methods: Alginate impressions were taken for ten patients who have a CBCT scan. A 3D printed retainer and vacuum formed retainer were fabricated. Linear measurements were measured by two assessors using digital caliper. Every measurement on the 3D printed retainer was compared to the corresponding measurement on the thermoformed retainer. The linear measurements were Inter-canine width, Inter-premolar width (first and second premolars), Inter-molar width, Canine-midline length (both sides) and Canine-molar length (both sides). Intra-observer, and inter-observer reliability measurements were done. Results: Results showed excellent intra-observer reliability for the thermoformed retainer and the 3D printed retainer. Inter-observer measurements showed strong agreement between the measurements of the two assessors, for both retainers. The comparison of the thermoformed retainer to the 3D printed retainer showed high statistical agreement, except for the canine-molar on the right side, but with no clinical significance,

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“…Berco et al (2009) and Hassan et al (2009) insist skull orientation during CBCT scanning does not affect the accuracy or the reliability of the measurements.…”

Section: Chapter 2: Review Of Literaturementioning

confidence: 99%

“…The mandible was positioned with the aid of laser lights with the inferior border of the mandible parallel with the horizontal plane and the mid-sagital plane aligned perpendicular to the horizontal plane. This altered positioning, inferior border versus the occlusal plane being parallel to the horizontal plane, allows for the capture of the entire mandible and all associated reference points despite the SFOV (37mm) and will not affect scanning accuracy per Berco et al (2009) and Hassan et al (2009). The scan was performed with the following reduced exposure settings: mA 6, KvP 80, 0.018 s and 0.2 Voxels (resolution), accounting for the lack of soft tissue density.…”

Section: Chapter 3: Materials and Methodsmentioning

confidence: 99%

“…Many studies are found in the literature verifying the dimensional accuracy of CBCT imaging; most of which using osteologic landmarks on dry human skulls as reference points for measurement (Lascala et al 2004;Hilgers et al 2005;Morishi et al 2007;Lagrave et al 2008;Loubele et al 2008;Periago et al 2008;Berco et al 2009;Hassan et al 2009;Moriera et al 2009). …”

Section: Chapter 1: Introduction and Backgroundmentioning

confidence: 99%

See 1 more Smart Citation

Evaluating Dimensional Accuracy and Reliability of "Stitched" Small Field of View (SSFOV) Cone Beam Computed Tomography (CBCT) Datasets for Use in Proprietary Dental Implant Guided Surgery Software

Egbert¹

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Accuracy and reliability of linear cephalometric measurements from cone-beam computed tomography scans of a dry human skull

Cited by 162 publications

References 35 publications

Asymmetry assessment using cone beam CT

Asymmetry assessment using cone beam CT

Accuracy of Orthodontic 3D Printed Retainers versus Thermoformed Retainers

Evaluating Dimensional Accuracy and Reliability of "Stitched" Small Field of View (SSFOV) Cone Beam Computed Tomography (CBCT) Datasets for Use in Proprietary Dental Implant Guided Surgery Software

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