Abstract

The purpose of this study was to determine the relationship of arch form and tooth size to arch depth measurements of study models (Casts) and their respective lateral cephalometric radiographs (Radiographs) in a population of patients treated to an acceptable occlusion without extraction. One hundred and twenty casts were divided into three tooth size classes within each of four arch form categories. Results showed there was a statistically significant change in the arch depth measurement when tooth size was varied. There was no statistically significant change in the arch depth measurement when arch form was varied. The results showed greater correlation of Radiographic distal arch depth correlated to Cast distal arch depth rather than Radiographic mesial arch depth correlated to Cast mesial arch depth. This study determined 35 mm, 37 mm and 39.5 mm as the means of Radiographic distal arch depth for small, medium and large sized teeth respectively. A Visualized Treatment Objective (VTO) constructed using an arch depth norm produced a more accurate VTO than when using an arch length discrepancy norm.

LLU Discipline

Orthodontics

Department

Orthodontics and Dentofacial Orthopedics

School

Graduate School

First Advisor

V. Leroy Leggitt

Second Advisor

Craig A. Andreiko

Third Advisor

Michael J. Fillman

Fourth Advisor

Anthony B. Lier

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1997

Date (Title Page)

6-1997

Language

English

Library of Congress/MESH Subject Headings

Dental Arch; Dental Occlusion; Dentures; Tooth

Type

Thesis

Page Count

vii; 28

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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