Abstract

Mechanical expansion of the maxilla, at the midline suture, is a widely accepted orthodontic procedure used to gain arch width in certain types of maxillary deficient arches.

In animal research on the mandible, techniques using surgical separation at the symphysis with immediate expansion up to 12 mm, fixation with a metal splint, and autogenous bone transplanted into the expanded area, have been reported to be successful.

To date, no experiment utilizing slow mechanical expansion of the mandible at the symphysis has been reported.

In this pilot study, the mandible of a female baboon was surgically separated A-P at the symphysis. A vitallium casting, split vertically at the midline, with a jack screw uniting the two halves, was used to mechanically separate the mandible. The appliance was securely fastened in place with four screws which passed between the posterior teeth below the height of the contour. Separation took place over a six week period.

Tetracycline bone marking injections were given in this study to label the new bone and show any late functional remodeling that was occurring.

Gross visual, radiographic, and microscopic observation showed that new bone filled in the expanded area.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Roland D. Walters

Second Advisor

Philip J. Boyne

Third Advisor

Earl R. Crane

Fourth Advisor

W. Howard Davis

Fifth Advisor

Arthur J. Morgan

Sixth Advisor

Willis L. Schlenker

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1982

Date (Title Page)

6-1982

Language

English

Library of Congress/MESH Subject Headings

Mandible -- surgery

Type

Thesis

Page Count

vi; 48

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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