Orthodontics and Orthodontology Commons^™

The Theoretical Distribution Of Forces In The Rigid Component Of The Buccal Arch Positioner, Dennis H. Teruya

Loma Linda University Electronic Theses, Dissertations & Projects

The distribution of an applied force to the rigid component of the Buccal Arch Positioner was determined with a theoretically formulated model. The rigid component was assumed to be a free body without the semi-rigid attachments and was evaluated at four points for the force distribution. The summation of the forces and the moments were equated to zero and were utilized to derive equations to solve for the unknown forces. The unknown forces at each point of the rigid component were solved for in terms of the given force applications.

A laterally directed force application at one of the posterior …

Cephalometrics For The Oral Surgeon In The Diagnosis Of Facial Deformities, Frederick J. Mantz

Loma Linda University Electronic Theses, Dissertations & Projects

Surgical orthodontics presents a challenge to the oral surgeon. By the nature of the oral surgeon's training and discipline he should be the one best qualified to treat the surgical aspect of the surgical orthodontic case. The establishment of a proper diagnosis and means of communication between the oral surgeon and orthodontist are essential in achieving a good final result for the surgically treated case. Fortunately, a scientific method of diagnosis is available that can provide both specialties with a common language. Computerized cephalometric analysis can provide the diagnosis and link of communication for the discussion of goals and treatment. …

Development And Analyses Of A New Ideal Finishing Appliance, Robert M. Asatani

Loma Linda University Electronic Theses, Dissertations & Projects

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 …

Clinical Photographic Analysis Of Dentofacial Midline Asymmetries, Larry A. Okmin

Loma Linda University Electronic Theses, Dissertations & Projects

Clinical diagnosis of dentofacial midline asymmetries has been difficult because of the problems in locating a reliable median sagittal reference plane, and because of the complexity and time involved in analysis. For these reasons, the clinician has generally resorted to direct visual observation in diagnosing midline discrepancies. A quick, precise, chairside method of dentofacial midline analysis would be of benefit to the orthodontist.

This study presented a clinical photographic method of dentofacial midline analysis and compared its precision with that of direct observation. The photographic method employed an Orthoscan Polaroid intraoral camera (Unitek) with a positioning device used to relate …

Observations On The Application Of The Buccal Arch Positioner, Gerald A. Fillmore

Loma Linda University Electronic Theses, Dissertations & Projects

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 …

Modifications, Adaptations, And Clinical Observations On The Buccal Arch Positioner, Bill J. Miller

Loma Linda University Electronic Theses, Dissertations & Projects

Buccal arch positioners (BAP) were constructed for four orthodontic patients banded with edgewise brackets, which were clinically observed during the finishing stages of treatment. At 2-4 week intervals data were collected on oral hygiene, tissue tolerance, magnitude and duration of soreness, and ease of appliance insertion and adjustments.

During the construction of the BAP, an ideal set up was found to be necessary for construction of the flexible components. It had the final location of each tooth visible so the investigator could work towards that goal.

Heat treatment of the rigid component was done to remove the cold working stress …

The Development Of A New Appliance For The Third Stage Of Begg Treatment, Ronald C. Parker

Loma Linda University Electronic Theses, Dissertations & Projects

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 …

Advances In Orthodontics, Volume 4 (1973), American Dental Association

Advances in Orthodontics

Advances in Orthodontics contains abstracts of articles related to all phases of orthodontics published in hundreds of journals throughout the world each year, arranged as a convenient ready reference. The material is organized into the major sections of orthodontics and has been arranged more or less by date of the original publication.

Contents appeared in journals devoted to clinical dentistry, dental research, medicine, and basic sciences. Included in each Advances volume are all the abstracts published in the corresponding section of the contemporaneous volume of Oral Research Abstracts and those from other sections with some relationship to the topic. The …