Abstract
The purpose of this paper is to introduce a new theoretical finishing appliance which should reduce the problems encountered during finishing with the present appliances. Maxillary and mandibular Buccal Arch Positioner appliances were constructed on a model that could deliver custom-designed force magnitude and direction to each tooth.
The mean force and displacement of 1 mm. for each flexible component were quantitated individually while all other flexible components were in a passive bracket position to see if the force magnitude to each tooth was constructed properly. Various hypothetical situation were quantitated. Unilateral mesial vectors caused skewing and labial displacement of the midline with minimal mesial forces to the posterior segments. Bilateral buccal-lingual vectors to the posterior segment cancelled out their reciprocal reactions. Bilateral intrusion or extrusion reciprocal forces were reduced greatly to the immediate adjacent teeth. Bilateral mesial vectors did not cause midline skewing but added considerably more mesial force to the posterior segments but well within the range to maintain anchorage. All skewing and displacements of flexible component can be avoided by immobilizing the flexible components to the last molars bilaterally. If the summation of mesial vectors are of great magnitude, anchorage preservation could be a problem. In such cases, placement of the rigid component into the vestibule, anatomical variation and directional extraoral force should be reanalyzed.
LLU Discipline
Orthodontics
School
Graduate School
First Advisor
Roland D. Walters
Second Advisor
John P. DeVincenzo
Third Advisor
Steve N. Asahino
Fourth Advisor
Jack L. Tomlinson
Fifth Advisor
Joseph Jacobs
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1973
Date (Title Page)
6-1973
Language
English
Library of Congress/MESH Subject Headings
Dental Instruments; Orthodontics
Type
Thesis
Page Count
vii; 38
Digital Format
Digital Publisher
Loma Linda University Libraries
Copyright
Author
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.
Recommended Citation
Asatani, Robert M., "Development and Analyses of a New Ideal Finishing Appliance" (1973). Loma Linda University Electronic Theses, Dissertations & Projects. 1162.
https://scholarsrepository.llu.edu/etd/1162
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