Evaluation of Apical, Coronal and Occlusal Form Diffrences with Conventional Orthodontic Treatment

Introduction: Cone-beam computed tomography (CBCT) can be used to accurately identify dental landmarks in order to detect changes in dental arch forms. Purpose: The objective of this study was to determine how apical, coronal and occlusal arch forms change following orthodontic treatment with fixed appliances and to establish a base for future studies. Material and Methods: Maxillary and mandibular apical, coronal and occlusal landmarks of 27 subjects were selected on their respective CBCT images at two time points: pre-orthodontic treatment (T1) and post-orthodontic treatment (T2). Comparisons were made between the two time points to evaluate how each arch form changed following routine orthodontic treatment. Statistical Analysis: Euclidean Distance Matrix Analysis (EDMA) with bootstrap analysis was used to assess changes in geometric form from T1 to T2 at each of the three levels. Landmark selection was repeated on 10 subjects and an intraclass correlation (ICC) was used to assess reproducibility. Results: The mandibular apical arch showed statistically significant change in geometric form from T1 to T2. No statistically significant change was observed in the mandibular coronal and occlusal, as well as maxillary apical, coronal and occlusal arches. Conclusion: During conventional orthodontic treatment of Class I, minimally crowded cases, selecting orthodontic arch wires according to the clinical coronal or occlusal arch form is viable.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Orthodontics and Dentofacial Orthopedics

Year

2012

Author dc:creator

• Sardarian, Tamar

Contributors dc:contributor

• Caruso, Joseph
• Batesole, Mark
• Leggitt, V. Leroy
• Rungcharassaeng, Kitichai

• Orthodontics and Orthodontology
• Other Dentistry
• Cone-Beam Computed Tomography; Image Processing, Computer-Assisted; Orthodontics;
• Orthodontics
• Cone-Beam Computed Tomography
• Apical Form Differences
• Coronal Form Differences
• Occlusal Form Differences
• Euclidean Distance Matrix Analysis

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/98

OAI identifier oai:identifier

oai:scholarsrepository.llu.edu:etd-1097