Abstract

The correction of anterior open bite in dolichofacial individuals with magnetic forces has been studied. The attempt was made to intrude buccal segments by using interarch magnets set in repulsion in order to correct the anterior open bite of six dolichofacial patients. It was expected to intrude the posterior sections with these magnetic forces, to autorotate the mandible and to close the anterior open bite by decreasing the lower facial height and rotating the facial axis closed. The magnets were placed in each arch only on those teeth that needed intrusion, mainly second premolars and existing molars, for a period of 21 weeks on six patients with a vertical pattern and an anterior open bite. It was found that in this period of magnetic wear there was little or no intrusion of the buccal segments. There were no appreciable changes in the position of the facial axis. Three cases showed slight reduction of the anterior open bite independently of the magnetic forces. There was a problem with production of posterior crossbites which possibly were instrumental in reducing the intrusion capabilities of the magnetic forces. It was concluded that forces exerted by the magnets were great enough to result in tooth intrusion but design changes in the magnetic appliance were necessary to improve buccal section intrusion.

Key Words: Magnetic, Intermaxillary, Posterior Intrusion, Dolichofacial, Open Bite, Mandibular Autorotation.

LLU Discipline

Orthodontics

Department

Orthodontics and Dentofacial Orthopedics

School

Graduate School

First Advisor

Michael J. Filman

Second Advisor

Milford J. Anholm

Third Advisor

M. Toufic Jeiroudi

Fourth Advisor

Jack L. Tomlinson

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

Malocclusion -- therapy; Magnetics; Orthodontics, Corrective

Type

Dissertation

Page Count

v; 65

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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