Student Theses, Dissertations and Capstones

Document Type

Thesis - NSU Access Only

Degree Name

Master of Science (M.S.) in Dentistry

Copyright Statement

All rights reserved. This publication is intended for use solely by faculty, students, and staff of Nova Southeastern University. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, now known or later developed, including but not limited to photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author or the publisher.

Department

College of Dental Medicine

First Advisor

Cristina Godoy

Date of original Performance / Presentation

January 2019

Publication Date / Copyright Date

1-1-2019

Abstract

Introduction: The purpose of this study was to examine and compare the lateral cephalometric measurements of the Chickasaw Nation with that of Caucasians, who were selected on the basis of having normal occlusions and well-balanced faces. Methods: In this retrospective observational study, 100 lateral cephalometrics (46 males and 54 females) of Chickasaw adolescent sample, were compared to the Ann Arbor Study that consisted of 83 individuals consisted of 47 males and 36 females, with continuous attendance at the University School over the period ranging from their 6th to 16th birthdays. Each lateral cephalogram was traced and digitized, and differences between cephalometric measurements between groups were analyzed based on 4 different analysis including Downs, Steiner, Tweed and Rickets for skeletal and dental angular and linear measurements and compared with independents t tests. Results: In comparison to the Caucasian sample, the Chickasaw sample, in general, was larger in anteroposterior skeletal variables and proportionately smaller in vertical facial dimensions. The facial angle was more obtuse and Y axis was more acute in Chickasaw subjects, indicating a more forward rotation of the mandible. On average, the subjects in the Chickasaw population were more upright dentally in the lower arch. Conclusions: Citizens of the Chickasaw Nation with the normal occlusion and balanced facial profile could be described as having more Class III skeletal tendency in the sagittal dimension, hypodivergent tendencies, and more upright lower incisors based on Down and Tweed analysis. These differences should be considered when limited number of cephalometric analysis are used for formulating an orthodontic treatment plan for patients of this ethnicity.

Disciplines

Dentistry

Keywords

Caucasian; Cephalometric; Chickasaw

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