Abstract

The third stage of Begg treatment can pose difficulties to the orthodontist. Some of the undesirable developments encountered are anchorage loss, unintentional tooth tipping, extrusion, intrusion, palatal and mandibular rotation, muscular strain and profile deficiency or procumbency. In the interest of eliminating or minimizing these developments a new appliance was developed for use during the third stage of treatment.

Simply described, the appliance consisted of a rigid vestibular arch that provided anchorage for flexible extensions to each tooth. Extraoral force was directed to the maxillary rigid arch to counter anterior root torquing forces.

Anchorage control, maxillary incisor torquing efficiency and appliance management were parameters quantitatively evaluated. Anchorage control was maintained as the maxillary incisors were palatally root torqued. Maxillary incisor root torque efficiency was approximately 1/4 that of the conventional Begg appliance. Appliance hygiene management by the patient was very favorable. Little discomfort was experienced. The appliance proved difficult upon insertion as well as in adjustments.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Roland D. Walters

Second Advisor

Alden B. Chase

Third Advisor

John P. DeVincenzo

Fourth Advisor

J. Milford Anholm

Fifth Advisor

James R. Wise

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1973

Date (Title Page)

5-1973

Language

English

Library of Congress/MESH Subject Headings

Orthodontic Appliances

Type

Thesis

Page Count

viii; 60

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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