Abstract

The purpose of this study was to test the hypothesis that occlusal plane changes induced by orthodontic treatment remain stable during retention, and to show that the occlusal plane cant is related to facial type and occlusal classification.

A comparison of facial type, occlusal classification, extraction status, and growth status was provided. The sample consisted of pretreatment, posttreatment, and postretention cephalometric radiographs of 156 orthodontic cases from the records of Loma Linda University School of Dentistry, Department of Orthodontics. Changes in the cant of the occlusal plane were evaluated by the Frankfort horizontal to occlusal plane angle.

Results showed that the occlusal plane cant displayed more stability if changed during growth, with changes in the cant of the occlusal plane after treatment being primarily from growth. Significant correlation existed between occlusal plane cant and skeletal facial type, with brachyfacials having a more acute Frankfort plane to occlusal plane angle than mesofacials. Dolicofacials demonstrated the most obtuse Frankfort plane to occlusal plane angle. No correlation existed between the occlusal plane and occlusal classification.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Clelan G. Ehrler

Second Advisor

Michael J. Fillman

Third Advisor

James R. Wise

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1987

Date (Title Page)

6-1987

Language

English

Library of Congress/MESH Subject Headings

Orthodontics, Corrective

Type

Thesis

Page Count

v; 47

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage 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.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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