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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

Estudo de coorte prospectivo do padrão ósseo alveolar em mulheres eutróficas e obesas antes e após a cirurgia bariátrica / Prospective cohort study of alveolar bone pattern in eutrophic and obese women before and after bariatric surgery

Jefry Alberto Vargas Cabral 20 February 2017 (has links)
O tecido adiposo pode regular o metabolismo ósseo e estar envolvido na fisiopatologia da osteoporose, sendo este fator determinante no sucesso de tratamentos reabilitadores com implantes dentários osseointegrados. O presente estudo de coorte prospectivo teve como objetivo verificar o padrão ósseo alveolar por meio de índices radiomorfométricos da radiografia panorâmica e medidas lineares realizadas em radiografias periapicais, em pacientes eutróficas e obesas mórbidas antes e após a cirurgia bariátrica. A amostra foi constituída por 31 mulheres com idade de 20 a 35 anos, sendo divididas em 2 grupos: Grupo Experimental (GE-Obesas de Grau III, IMC >40 Kg/m2) e Grupo Controle (GC- Eutróficas, IMC 18,5 a 24,99 Kg/m2). Foram avaliadas 20 eutróficas e 11 obesas mórbidas no pré e pós-cirurgia bariátrica (6 meses). Índices radiomorfométricos e de placa dentária foram avaliados nos tempos T0 (baseline) e T1 (6 meses). Na análise radiográfica foram avaliados o padrão trabecular através da escada visual de Lindh e a perda óssea por meio do cálculo da distância da junção cemento-esmalte à crista óssea, em radiografias periapicais. Já as radiografias panorâmicas para mensurar Índice da Cortical Mandibular (ICM), Índice Mentoniano (IM) e Índice Panorâmico Mandibular (IPM), além do índice de Placa de Turesky. Houve perda óssea significativa em T1 nas pacientes submetidas à cirurgia bariátrica, quando comparada com as eutróficas (p<0,05). O padrão trabecular tornou-se mais esparso após a cirurgia apresentando uma diferença visual. No índice de placa foi observada uma ligeira melhora após a cirurgia e os eutroficos mantiveram valores similares ao longo do tempo. Pode-se concluir que pacientes obesas apresentam maior perda óssea, a qual piora após a cirurgia bariátrica, quando comparada com o de pacientes eutróficas. O mesmo acontecendo com o trabeculado ósseo que se torna mais esparso após a cirurgia bariátrica. / Adipose tissue can regulate bone metabolism and be involved in the pathophysiology of osteoporosis, being this determinant factor in the success of rehabilitative treatments with osseointegrated dental implants. The present prospective cohort study aimed to verify the alveolar bone pattern through radiomorphometric indices of panoramic radiography and linear measurements performed in periapical radiographs in eutrophic and morbidly obese patients before and after bariatric surgery. The sample consisted of 31 women aged 20-35 years old, divided into 2 groups: Experimental Group (GE-Obesas de Grade III, BMI> 40 Kg / m2) and Control Group (GC-Eutrophic, BMI 18.5 To 24.99 kg / m2). 20 eutrophic and 11 obese morbidities were evaluated in the pre and postoperative bariatric surgery (6 months). Radiomorphometric and plaque indices were evaluated at T0 (baseline) and T1 (6 months) times. In the radiographic analysis the trabecular pattern through the Lindh visual ladder and the bone loss were evaluated by calculating the distance from the cemento-enamel junction to the bone crest in periapical radiographs. Panoramic radiographs were used to measure the Mandibular Cortical Index (ICM), Mentonian Index (IM) and Panoramic Mandibular Index (MPI), in addition to the Turesky Plate index. There was a significant loss of bone in T1 in patients submitted to bariatric surgery, when compared to eutrophic patients (p <0.05). The trabecular pattern became more sparse after surgery with a visual difference. The plate index showed a slight improvement after surgery and the eutrophic maintained similar values over time. It can be concluded that obese patients present greater bone loss, which worsens after bariatric surgery, when compared to that of eutrophic patients. The same happens with the trabecular bone that becomes more sparse after bariatric surgery.
112

Response of the human jaw to mechanical stimulation of teeth

Brinkworth, Russell Stewart Anglesey January 2004 (has links)
Animal experiments indicate that the main form of feedback for jaw-closing muscles is from periodontal mechanoreceptors (PMRs). However, due primarily to limitations on methods, this is yet to be confirmed in humans. The main aim of this thesis was to investigate the reflex contribution of PMRs to the human jaws using vertical (axial) stimulation. To this end the electromyographic and bite force responses of the jaw to a number of different mechanical stimulus conditions, delivered to both the upper central incisors and the upper right first molars, were investigated. The principal hypothesis was that PMRs are responsible for the majority of the reflex responses seen in the human jaw muscles. Furthermore this reflex response is modulated by different characteristics of the stimulus such as: rate of rise, maximum force applied, the amount of constant offset force (preload), the level of muscle contraction and also the physical characteristics of the subject's jaw including: dental health and tooth spacing. These studies have contributed towards the understanding of the neuronal wiring and the receptor systems contained in the jaw. The results indicate that PMRs around the incisors are of fundamental importance for the development of reflex patterns but little if any PMR related reflexes exist around the molar teeth. The reflexes originating from the PMRs around the incisors are modulated by different mechanical characteristics of the stimulus, thus helping to explain how the jaw muscles perform numerous and complex patterns of activation which move the jaw in many different ways and develop forces that are optimum for the task at hand. / Thesis (Ph.D.)--School of Molecular & Biomedical Science, 2004.
113

Balso technologijų adaptavimas lietuviškai kalbantiems asmenims su regėjimo negalia / Adaptation of voice technologies for lithuanian visually impaired persons

Maceinaitė, Eglė 25 November 2010 (has links)
Šiame darbe nagrinėjamas balso technologijų adaptavimas lietuviškai kalbantiems asmenims su regėjimo negalia. Tiriamas lietuviškų internetinių puslapių pritaikymas akliesiems ir silpnaregiams, naudojantis ekrano skaitytuvu „Jaws for Windows“. Darbo tikslas – ištirti naudojamų kalbos technologijų taikymų adaptavimo galimybes, lietuviškai kalbančiam neįgaliam asmeniui. Darbo uždaviniai: 1. Išsiaiškinti balso technologijų taikymų neįgaliesiems svarbą; 2. Išnagrinėti programinę ir techninę balso technologijų neįgaliesiems taikymo įrangą; 3. Ištirti ekrano skaitytuvo „Jaws for Windows“ funkcionalumą ir vartotojiškumą; 4. Įvertinti kiek Lietuva yra pasiruošusi internetinių puslapių neįgaliesiems kūrime ir naudojime; 5. Pasiūlyti priemones, internetinių svetainių akliesiems ir silpnaregiams, kūrimui ir naudojimui. Darbe naudotini metodai: literatūros analizė ir apibendrinimas, empirinis-eksperimentinis bandymas bei lyginamoji analizė. Išvados: 1. Darbe išsiaiškinta, kad balso technologijų taikymai neįgaliesiems yra esminis jų integravimo į visuomenę elementas. 2. Nustatyta, kad didžiausias yra techninės įrangos pasirinkimas kurtiesiems ir neprigirdintiems, tačiau programinės įrangos didžiausia rinka yra skirta akliesiems ir silpnaregiams. 3. Išsiaiškinta, kad „Jaws for Windows“ ekrano skaitytuvas yra tarptautinis ekrano skaitytuvų standartas akliesiems ir silpnaregiams. 4. Ištirtas ekrano skaitytuvo „Jaws for Windows“ funkcionalumas ir vartotojiškumas, nustatyta, kad programa daro... [toliau žr. visą tekstą] / This paper considers the adaptation of voice technologies for Lithuanian visually impaired persons. Studied Lithuanian popular websites use of blind and partially sighted people, using a screen reader "JAWS for Windows." The aim of work – explore adaptation of speech technologies applications oriented for disabled Lithuanian people. The tasks of work: 1. To clarify the importance of speech technologies applications oriented for disabled people; 2. Examine the software and the hardware of speech technologies oriented for disabled people; 3. Examine the screen scanner „Jaws for Windows“ functionality and consumption; 4. Assess how Lithuania is ready to develop and to use websites for disabled people; 5. To propose measures for creation and use websites for blind and partially sighted people. The work methodology: Analysis and synthesis of the literature, empirical test-experimental and comparative analysis. Conclusions: 1. Recognition of the work that the voice technology applications for disabled people are essential to their way of integration into society. 2. Clear that the „Jaws for Windows“ screen reader is an international standard of screen readers for blind and sighted people. 3. Studied the screen reader „Jaws for Windows“ functionality and consumption, found that the program has twice as many errors, in reading the most popular Lithuanian sites, than those recommended by the American Association for the blind and sighted. 4. Experimental study of the proposal to... [to full text]
114

The effect of X-ray irradiation on the developing hard tissues of the mandible.

Adkins, Kenneth Francis. Unknown Date (has links)
No description available.
115

The effect of X-ray irradiation on the developing hard tissues of the mandible.

Adkins, Kenneth Francis. Unknown Date (has links)
No description available.
116

Changes resulting from Begg orthodontic treatment, with emphasis on the soft tissue profile /

Farrer, Steven. January 1984 (has links) (PDF)
Thesis (M.D.S.)--University of Adelaide, Dept. of Dentistry, 1985. / Some mounted ill. Includes bibliographical references (v. 1, leaves 206-227).
117

A retrospective cephalometric study of the effect of the Fränkel appliance, the ClarkTwin Block and the activator on class II division /

Laparidis, Con. January 1999 (has links) (PDF)
Thesis (M.D.S.)--University of Adelaide, Dept. of Dentistry, 1999. / Bibliography: leaves 187-211.
118

Orthopaedic and orthodontic treatment effects using the Clark Twin Block functional appliance : a retrospective cephalometric study of patients with class II malocclusions : a report submitted in partial fulfilment of the requirements for the degree of Master of Dental Surgery /

Ling, Paul H. January 1998 (has links) (PDF)
Thesis (M.D.S.) -- University of Adelaide, Dept. of Dental Surgery, 1999. / Bibliography: leaves 137-149.
119

An immunohistochemical study of idiopathic histiocytosis of the jaws a thesis submitted in partial fulfillment ... oral pathology and diagnosis ... /

Stewart, Jeffery C. B. January 1985 (has links)
Thesis (M.S.)--University of Michigan, 1985.
120

Masticatory dysfunction index design and initial clinical evaluation : a thesis submitted in partial fulfillment ... restorative occlusion /

Nelson, Stanley J. January 1986 (has links)
Thesis (M.S.)--University of Michigan, 1986.

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