Abstract

Forty non-treated and twenty-two orthodontically treated cases were selected to determine the relationship of the bucco-lingual position of the mandibular first molar to occlusion and arch stability.

Plaster models and occlusal radiographs were obtained from all the cases. Anterior crowding, intermolar width, molar classification, and molar overhang relative to the basal bone were determined. The modified technique for occlusal radiographs used was found to result in radiographs which were more versatile and accurate when interchanged with the model measurements. Clinical applications of this technique include the determination of root angulations, location of impactions, and the fabrication of individualized preformed arch wires.

Only in the Class I non-treated cases was the molar found directly over basal bone. There was no direct correlation of molar overhang and anterior crowding or intermolar width except in the untreated bilateral Class II cases which exhibited a correlation at the 0.02 significance level. The treatment plan must therefore be carefully evaluated on this type of patient.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Roland D. Walters

Second Advisor

Steve N. Asahino

Third Advisor

Virgil V. Heinrich

Fourth Advisor

Jack L. Tomlinson

Fifth Advisor

Grenith J. Zimmerman

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1971

Date (Title Page)

5-1971

Language

English

Library of Congress/MESH Subject Headings

Dental Occlusion; Balanced

Type

Thesis

Page Count

v; 32

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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