Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 126 for “"Orthodontics and Orthodontology"”.
-
A Survey of Treatment Characteristics in a University-based Graduate Orthodontic Program
… reports characterize actual orthodontic patients and their treatments. The purpose of this study was to describe the patients and their treatment at a university based orthodontic department, namely the University of Tennessee Health Science Center, Memphis. The goals of this study are: (1) to …
-
Observations on the Application of the Buccal Arch Positioner
… Study adapted the theoretical BAP to clinical orthodontics to observe its acceptance by patients and operators and to observe changes in occlusion during treatment.</p> <p>Three patients Were chosen and BAPs were constructed. The .072 in. rigid member was found to be adequate in strength and …
-
A Comparison Between Differences of Body-Image and Self-Concept for Pre- and Post-treatment Orthodontic Patients
… patient produce changes in his or her body-image and self-concept?</p> </li> <li> <p>In which areas of the body does the patient experience changes in body image after orthodontic treatment?</p> </li> <li> <p>What significance or value does the patient place on orthodontic treatment relative to …
-
A Study of Crown and Root Angulation on Maxillary First and Second Bicuspids
… convenience of working with both fewer in number and smaller in magnitude adjustments of an archwire. The purpose of this in vitro study was to examine the normal variations in crown angulation of individual maxillary bicuspids, in a simulated flat plane of occlusion, and how this relates to …
-
The Fracture Strength of Ceramic Brackets : A Comparative Study
… the effect of different surface conditions and different ligation methods on the fracture strength of ceramic brackets and the yield strength of metal brackets.</p> <p>Ceramic brackets followed the Griffith model, which was used to interpret their fracture strength with respect to their …
-
The Effects of Maxillary Quad-Helix Appliance Expansion on Cephalometric Measurements in Growing Orthodontic Patients
… of maxillary quad-helix expansion on frontal and lateral cephalometric measurements in growing orthodontic patients. Twenty subjects, nine girls and eleven boys (x age = 10 years, 3 months), each exhibiting at least a unilateral posterior lingual cross-bite that had been treated with a …
-
Change in the Number of Fibers and Nuclei in the Rat Soleus Muscle During Normal Development and Increased Work Load Exercise
… in animals that skeletal muscle cells and corresponding deoxyribonucleic acid (DNA) increased with exercise, clinical studies on the upper lip would be in order.</p> <p>Male Sprague Dawley albino rats were used to study the effects of exercise and normal development. Increased work load …
-
Development and Analyses of a New Ideal Finishing Appliance
… 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.</p> <p>The mean force and displacement of 1 mm. for each flexible component were quantitated …
-
Mandibular Resting Posture : An Electromyographic Evaluation
<p>Mandibular resting posture is the positional expression of cranial-facial morphology and the myotatic reflex of its contiguous musculature.</p> <p>Alteration of sensory input to the main sensory, mesencephalic and motor nucleus of the Fifth nerve in a myotalic reflex system, theoretically should …
-
The Physiological Aspects of the Piezoelectric Phenomenon and its Application in Biologic Bone
<p>The relationship between stress and bony architecture has long been recognized, but the actual cellular machanism which causes the alteration is still somewhat vague. Piezoelectric properties and bioelectric potentials have been proposed as partial answers.</p> <p>It is the purpose of this …
-
Correlation of the Epiphyseal Closure and Ossification of the Ulnar Sesamoid Bone of the Metacarpophalangeal Joint of the Thumb
… the times of closure of the epiphyses of the hand and the time of ossification of the ulnar sesamoid of the metacarpophalangeal joint of the thumb.</p> <p>The time for these events was studied in twenty-three males and fourteen females for which appropriate hand radiographs were available. …
-
Cephalometric Analysis of Soft Tissue Profile Change Associated with Orthodontics and Orthognathic Surgery : A Long-Term Study
… to determine the effect of combined orthodontic and orthognathic surgical treatment upon the soft tissue profile, and to determine the correlation between soft tissue response and the following variables: type of surgery, genioplasty, lip thickness, method of surgical site closure, interlabial …
-
A Comparison in Processing of Alginate Orthodontic Impressions by Commercial Labs
… for pouring, model retrieval, final trim, and labeling. It was studied, by way of random sample survey, what materials and methods were most commonly utilized in 100 offices of members of the American Association of Orthodontics. This survey data was analyzed and used to establish a …
-
The Piezoelectric Effect of Bone In Vitro
<p>The mechanism of bone deposition and resorption, under stress, is incompletely understood. The direct piezoelectric properties of bone have been suggested as playing an active role in the internal morphology of bone tissue.</p> <p>This study was designed to fabricate an apparatus and develop a …
-
Magnetic Forces for Intrusion of Buccal Segments in Dolichofacial Individuals with Anterior Open Bite : A Report of Six Cases
… 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 …
-
Skeletal and Dental Components of Class II Division 1 Correction with the MARA Compared to the Standard Edgewise Appliance
… Class II dental relationships both dentally and skeletally by enhancing mandibular growth. The purpose of the study was to quantify differences in the amounts of skeletodental change based on treatment (MARA and Standard Edgewise) in Class II Division 1 patients. The sample consisted of 2 …
-
The Incidence of Dental Caries, Periapical Root Resorption, and Alveolar Bone Loss Among the Navajo Indians of Monument Valley, Utah
… permanent tooth periapical root resorption, and alveolar bone loss was assessed. The relationship of tooth malpositioning to the specific parameter was subsequently determined.</p> <p>The sample was divided into arbitrary age groups.</p> <p>Periapical roentgenograms were taken of each subject …
-
A Statistical Evaluation of Class III Indicators in a Caucasian Population
… location, Xi to Pt Vertical, Xi to SNa Vertical and Xi-S-Na angle) seventy cases with a Class III malocclusion and excessive facial depth were selected from the files of the Loma Linda University Orthodontic Department, Loma Linda University Oral Surgery Department and Fundacion Jimenez Diaz …
-
Distraction of Heterotopic Bone Formed with BMP-2 in a Rat Model: The Technique
… bone morphogenic proteins (for example BMP-2 and BMP-7) and a collagen matrix are surgically placed in a rat model either orthotopically or heterotopically. Bone begins to form by the 14 day, and is at it maximum calcified state by the 21st day. The purpose of this study is to observe and …
-
A Comparison of the Nance Holding Arch and Kloehn Headgear in Maxilliary Molar Anchorage
… during cuspid retraction. The Nance Holding Arch and Kloehn cervical headgear were compared as anchorage devices. A control group received no anchorage mechanics during cuspid retraction. All cuspids were retracted with Hilger's loop retractors.</p> <p>Anchorage loss was measured cephalometrically …
Page 1 of 7