Comparison between Ceph Analysis on Lateral Cephs, CBCT Scans, and MRI Scans

Introduction: Most current methods of obtaining images for orthodontic diagnosis and treatment planning involve the use of ionizing radiation. Given that patients often need records taken several times during treatment, an alternative should be found that does not involve ionizing radiation. Magnetic resonance imaging (MRI) exists as a possible alternative. Purpose: The purpose of this study is to compare cephalometric measurements obtained from lateral cephs, cone beam computed tomography (CBCT) scans, and MR scans. Methods: Lateral cephs, CBCTs, and MRIs were taken on 22 patients. 3 separate readers traced the images and the data was analyzed using Bland-Altman plots. Results: The Bland-Altman plots indicated that the correlation between the imaging methods varied depending on the measurement. The agreement varied from very good to statistically significant bias. However, the bias was judged to have been within normal limits for cephalometric tracing error. Conclusion: Under the conditions of this study, there were statistically significant differences in some of the cephalometric measurements. However, the differences were not clinically significant. This suggests that cephalometric data obtained from MRIs can be used for the purposes of orthodontic diagnosis and treatment planning.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Orthodontics and Dentofacial Orthopedics

Year

2013

Author dc:creator

• Lam, Jeffrey W.

Contributors dc:contributor

• Leggitt, V. Leroy
• Farrage, James
• Neufeld, Roland
• Olson, Gregory

• Orthodontics and Orthodontology
• Other Dentistry
• Cone-Beam Computed Tomography; Tomography Scanner, X-ray Computed; Magnetic Resonance Imaging; Radiography, Dental, Digital; Orthodontics, Corrective; Malocclusion - diagnosis
• Cone beam computed tomography
• magnetic resonance imaging
• Lateral cephalogram
• Orthodontic diagnosis
• Cephalometric measurements
• Ionizing radiation

Statement dc:rights

• This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Language dc:language

English

Repository record dc:identifier

https://scholarsrepository.llu.edu/etd/130

OAI identifier oai:identifier

oai:scholarsrepository.llu.edu:etd-1129