Some of the difficulties of achieving individual tooth to tooth relationships in finishing orthodontic cases can be associated with the appliances. In an attempt to overcome many of these difficulties, the Buccal Arch Positioner (BAP) has been theoretically proposed.
This Study adapted the theoretical BAP to clinical orthodontics to observe its acceptance by patients and operators and to observe changes in occlusion during treatment.
Three patients Were chosen and BAPs were constructed. The .072 in. rigid member was found to be adequate in strength and rigidity, however it produced some minor irritation of the vestibular tissues. A pilot study of force values was obtained during various spring deformations using 22 mm lengths of various wire sizes in the "S" shape. From this study the flexible members were chosen to produce forces within a physiologic range for an average patient.
Both patient and operator acceptance were better than expected. Beneficial changes observed were crossbite, incisor root tipping, midline and cuspid rotation corrections. Adverse changes observed were arch expansion and lower Cuspid roots tipped to a less favorable position.
The theoretical BAP was successfully adapted to clinical orthodontics as shown by patient and operator acceptance and by its ability to produce beneficial changes in occlusion.
Orthodontics and Dentofacial Orthopedics
Roland D. Walters
John P. De Vincenzo
Lloyd E. Downs
John K. Pearson
James R. Wise
Master of Science (MS)
Year Degree Awarded
Date (Title Page)
Library of Congress/MESH Subject Headings
Loma Linda University Libraries
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.
Fillmore, Gerald A., "Observations on the Application of the Buccal Arch Positioner" (1973). Loma Linda University Electronic Theses, Dissertations & Projects. 1179.
Loma Linda University Electronic Theses and Dissertations
Loma Linda University. Del E. Webb Memorial Library. University Archives