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.
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Showing 1 to 20 of 43 for “"Tooth movement"”.
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Pulp vascular changes following orthodontic tooth movement in rats.
Pulp vascular changes following orthodontic tooth movement in rats.
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Orthodontic tooth movement and neurotrophins in the rat dento-alveolar complex.
During orthodontic tooth movement, stress is applied on the dento-alveolar complex, initiating a biological response. This response results in the remodelling of the periodontal ligament and the alveolar bone. When a force is placed on a tooth, the periodontal ligament is stretched and compressed …
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The Characterization of Osteocyte Apoptosis in a Mouse Model of Orthodontic Tooth Movement
… observed in the alveolar bone during orthodontic tooth movement (OTM). In this study, we wanted to further investigate its occurrence and localization.</p> <p>Method: Sixteen 10-12 week old male CD1 mice were loaded with NiTi springs between the right first maxillary molar and incisor delivering …
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The Effect of Corticision on The Rate of Orthodontic Tooth Movement in Rats
… and increases patient satisfaction. Orthodontic tooth movement (OTM) is a result of bone resorption and apposition; factors influencing the rate at which these processes take place may affect OTM. Various attempts have been made to shorten treatment time. The regional acceleratory phenomenon …
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CBCT Evaluation of Morphological Changes to Alveolar Bone Due to Orthodontic Tooth Movement
… the anatomic factor that limits the orthodontic movement of the mandibular incisors, and awareness of this structural limitation may reduce the risk of potential damage to tooth roots and alveolar bone. A decision regarding the correct placement of the lower incisors will be largely determined by …
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Speed of Human Orthodontic Tooth Movement and Reported Pain When Applied Loads are Changed
… experience (intensity and quality) and rates of tooth movement during controlled human tooth movement, specifically where stresses are changed from relatively light (4 kPa) to heavy (52 kPa) and heavy to light. In a split mouth design, maxillary first premolars were extracted, posterior anchorage …
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Changes of the Marginal Periodontium as a Result of Labial Tooth Movement in Monkeys
<p>Orthodontic tooth movement was performed on five monkeys (Macaca nemistrina). Oral health was established and exploratory surgery was performed to assess the level of the connective tissue attachment and marginal bone. Measurements of the gingival margin and mucogingival junction were taken and …
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A Study of the Physical Properties of Latex as Related to Orthodontic Tooth Movement
Latex elastics have long been used in orthodontics, and force decay has always been a disadvantage. Reports differ on the load-deflection properties of rubber. Decay in elastic bands has ranged from 8% to 74.9%, depending on test conditions. A study was designed to ascertain (1) whether better …
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Assessment of tooth movement in the maxilla during orthodontic treatment using digital recording of orthodontic study model surface contours
… of the first three primary rugae and to evaluate tooth movement in the maxilla during orthodontic treatment in patients treated with and without premolar extractions.
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Association of vitamin D (1,25OHD, 25OHD and vitamin D binding protein) and alkaline phosphatase with orthodontic tooth movement and osteoblast function
… the association of Vitamin D with orthodontic tooth movement and the impact of Vitamin D 1,25OHD and 25OHD forms on osteoblast function. MATERIALS AND METHODS: This study is comprised of two parts; a clinical and a laboratory part. In part I, saliva samples were collected from orthodontic …
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Corticotomy enhanced orthodontics.
… a flap and corticotomy procedure on orthodontic tooth movement in rats and to compare the bone changes against a control group. Furthermore, the study aimed to introduce a new design for an appliance, which would allow buccal tooth movement in a rat model. Male Sprague-Dawley rats (n=36) aged 6-8 …
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Force Values and Rate of Distal Movement of the Mandibular First Permanent Molar
… The study was designed to determine the rate of movement and pain response of this tooth when relatively light specified forces were applied for distal movement. This study was undertaken in the light of recent evidence which suggests that forces many times lighter than those currently employed …
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The role of autophagy in protecting periodontium integrity, and lipopolysaccharide-induced osteoclast differentiation
… key to the physiological outcome are orthodontic tooth movement and inflammatory-induced periodontal disease. This thesis aims to investigate the hypothesis that autophagy is involved in bone remodeling during orthodontic tooth movement and periodontal disease. While the stem cells concerned in …
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Analysis of biological pathways, associated with orthodontic force, using multiplex arrays
… (n=21), before appliance placement and tooth extraction (B); 3 months into orthodontic treatment (T1); at 4 hours (T2); 1 week (T3); and 6 weeks (T4) after application of a canine distalising force. Periodontal health, plaque scores, canine movement and GCF volumes were recorded. …
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Modulation of RANKL and Osteoprotegerin in Adolescents Using Orthodontic Forces
<p>Orthodontic tooth movement is mediated by interactions between PDL cells and those of the alveolus. One protein--the receptor activator nuclear factor kappa B ligand (RANKL)--is critical for osteoclastogenesis, and osteoprotegerin (OPG) is a decoy ligand that competitively inhibits RANKL. A …
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RANKL and Osteoprotegerin Levels in Response to Orthodontic Forces
<p>Orthodontic tooth movement is mediated by interactions between PDL cells and those of the alveolus. One protein—the receptor activator nuclear factor kappa B ligand (RANKL)—is critical for osteoclastogenesis, and osteoprotegerin (OPG) is a decoy ligand that competitively inhibits RANKL. A higher …
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Quantitative Analysis of First- versus Second-Premolar Extraction Effects in Orthodontic Treatment
<p>Malocclusions can involve arch-size tooth-size discrepancies that have to be resolved by premolar extractions. Treatment planning in such cases usually involves removing first (P1) or second premolars (P2). Choosing an extraction pattern is a learned skill that incorporates many diagnostic …
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Understanding mechanical environment changes and biological responses to canine retraction using T-loop
… of Mechanical Engineering. Predictability of tooth displacement in response to specific orthodontic load system directly links to the quality and effectiveness of the treatment. The key questions are how the tooth's environment changes in response to the orthodontic load and how the biological …
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