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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.
1

Craniofacial Bone Density is Regulated by Thyroid Hormone in Zebrafish:

May, Catherine M. January 2019 (has links)
Thesis advisor: Sarah McMenamin / Thyroid hormone (TH) facilitates developmental transitions, particularly by modulating cell proliferation and differentiation. Its role in regulating skeletal growth is well documented. Previous work from our lab and others have demonstrated that hypo- and hyperthyroid fish display changes in bone shape, ossification and the timing of ossification5. Zebrafish (Danio rerio) develop bone quickly, grow indefinitely throughout their lives, are highly amenable for imaging, and are a valuable model for skeletal biology research. Using Danio rerio, we sought to study the long-term effects of TH on bone density by rearing and comparing normal euthyroid (Eu) with a transgenically thyroid-ablated hypothyroid (TH-) and mutant hyperthyroid (TH+) fish. We found that TH strongly affects bone density and volume. We further hypothesize that TH is critical for the timing and fidelity of skeletogenesis. In hormone-dysregulated fish, we found that massive bone and cartilage exostoses grow on the dentary. Thyroid hormone’s effects are highly bone-specific: in TH- fish, we see reduced density in many craniofacial bones, but also increased volume and mineralization in other regions of the dentary. These data suggest that TH plays a critical role in coordinating bone mineralization with growth. / Thesis (MS) — Boston College, 2019. / Submitted to: Boston College. Graduate School of Arts and Sciences. / Discipline: Biology.
2

Cirurgia ortognática associada á cirurgia das ATMs acometidas por artrite reumatóide ou osteocondroma

Araujo, Mário Lania de [UNESP] 17 September 2010 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:27:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-09-17Bitstream added on 2014-06-13T19:36:11Z : No. of bitstreams: 1 araujo_ml_me_arafo.pdf: 6460562 bytes, checksum: 81a4abebbd2eadd8bf21e826e06fa9ba (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Dois artigos foram redigidos e utilizados para a avaliação dos objetivos apresentados. Objetivo: Capítulo 1: Avaliar as alterações e estabilidade do espaço aéreo faringeano, das estruturas esqueléticas e dentárias após avanço e rotação antihorária do complexo maxilo-mandibular associado a próteses totais de ATM em pacientes portadores de artrite reumatóide. Capítulo 2: Avaliar as alterações das estruturas esqueléticas, dentárias e a estabilidade da técnica da condiloplastia, reposicionamento do disco articular e cirurgia ortognática como tratamento integral do paciente portador de osteocondroma condilar. Material e Método: Capítulo 1: Foram avaliadas telerradiografias laterais de dezessete pacientes (14 gên.feminino, 3 gên. masculino) portadores de artrite reumatóide, com 14 a 56 anos de idade (média de 25,4 anos) selecionados consecutivamente. Todos os pacientes foram submetidos ao avanço mandibular e reconstrução das ATMs com prótese total de ATM (TMJ Concepts); e cirurgia ortognática com rotação anti-horária do complexo maxilo-mandibular simultaneamente. A média de acompanhamento do pósoperatório em longo prazo foi de 27 meses após a cirurgia. As telerradiografias da amostra foram tomadas em 3 tempos (pré-operatório imediato-T1, pós-operatório imediato- T2 e pós-operatório em longo prazo- T3) e avaliadas por meio da análise cefalométrica. Capítulo 2: Foram analisadas telerradiografias laterais de quinze pacientes (12 gên.feminino, 3 gên. masculino), com 13 a 56 anos de idade (média de 32,3 anos), portadores de osteocondroma condilar ativo unilateral consecutivamente tratados. Os pacientes foram submetidos à condiloplastia, reposicionamento do disco articular e cirurgia ortognática simultânea. O acompanhamento pós-cirúrgico foi de 19 meses em média. As telerradiografias foram tomadas em três intervalos: pré-cirúrgico (T1)... / Two scientific papers have been drafted and will be used for the evaluation of the goals presented. Objective: Chapter 1: Evaluate surgical changes and stability of the narrowest retroglossal airway space, dental and skeletal structures after rotation of maxillomandibular complex counter-clockwise and mandibular advancement associated with total joint TMJ prosthetics replacements in patients with rheumatoid arthritis. Chapter 2: Evaluate surgical changes and stability of conservative condylectomy and articular disc repositioning as the surgical management of patients with mandibular condylar osteochondroma. Material and Method: Chapter 1: Lateral cephalometric radiographs of seventeen patients (14 females, 3 males), with average age of 25.4 years (age 14- 56) selected consecutively with rheumatoid arthritis were evaluated. All patients underwent TMJ reconstruction and mandibular advancement with TMJ Concepts custom made total joint prostheses and maxillomandibular counter-clockwise rotation at the same operation. Average post surgical follow-up was 27 months. Each patient’s lateral radiographs measurements were cephalometric evaluated immediate before surgery-T1, immediate post surgery-T2 and long-term-follow-up-T3. Chapter 2: Lateral cephalometric radiographs of fifteen patients (12 females and 3 males), average age of 32.3 years (range, 13 to 56 years), with unilateral active osteochondroma of the mandibular condyle were analyzed. All patients underwent conservative condylectomy, recontouring of the remaining condylar neck stump and articular disc repositioning and indicated orthognathic surgical procedures. Average post surgical follow-up was 19 months. Each patient’s lateral cephalograms were traced, digitized and measured at 3 time intervals (presurgery-T1, immediate post surgery-T2 and long-term follow-up-T3). Results: Chapter 1: Immediate after surgery the oclusal plane angle... (Complete abstract click electronic access below)
3

Cirurgia ortognática associada á cirurgia das ATMs acometidas por artrite reumatóide ou osteocondroma /

Araujo, Mário Lania de. January 2010 (has links)
Orientador: João Roberto Gonçalves / Banca: Miriam Ayko Nakane Matsumoto / Banca: Ary dos Santos Pinto / Resumo: Dois artigos foram redigidos e utilizados para a avaliação dos objetivos apresentados. Objetivo: Capítulo 1: Avaliar as alterações e estabilidade do espaço aéreo faringeano, das estruturas esqueléticas e dentárias após avanço e rotação antihorária do complexo maxilo-mandibular associado a próteses totais de ATM em pacientes portadores de artrite reumatóide. Capítulo 2: Avaliar as alterações das estruturas esqueléticas, dentárias e a estabilidade da técnica da condiloplastia, reposicionamento do disco articular e cirurgia ortognática como tratamento integral do paciente portador de osteocondroma condilar. Material e Método: Capítulo 1: Foram avaliadas telerradiografias laterais de dezessete pacientes (14 gên.feminino, 3 gên. masculino) portadores de artrite reumatóide, com 14 a 56 anos de idade (média de 25,4 anos) selecionados consecutivamente. Todos os pacientes foram submetidos ao avanço mandibular e reconstrução das ATMs com prótese total de ATM (TMJ Concepts); e cirurgia ortognática com rotação anti-horária do complexo maxilo-mandibular simultaneamente. A média de acompanhamento do pósoperatório em longo prazo foi de 27 meses após a cirurgia. As telerradiografias da amostra foram tomadas em 3 tempos (pré-operatório imediato-T1, pós-operatório imediato- T2 e pós-operatório em longo prazo- T3) e avaliadas por meio da análise cefalométrica. Capítulo 2: Foram analisadas telerradiografias laterais de quinze pacientes (12 gên.feminino, 3 gên. masculino), com 13 a 56 anos de idade (média de 32,3 anos), portadores de osteocondroma condilar ativo unilateral consecutivamente tratados. Os pacientes foram submetidos à condiloplastia, reposicionamento do disco articular e cirurgia ortognática simultânea. O acompanhamento pós-cirúrgico foi de 19 meses em média. As telerradiografias foram tomadas em três intervalos: pré-cirúrgico (T1)... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Two scientific papers have been drafted and will be used for the evaluation of the goals presented. Objective: Chapter 1: Evaluate surgical changes and stability of the narrowest retroglossal airway space, dental and skeletal structures after rotation of maxillomandibular complex counter-clockwise and mandibular advancement associated with total joint TMJ prosthetics replacements in patients with rheumatoid arthritis. Chapter 2: Evaluate surgical changes and stability of conservative condylectomy and articular disc repositioning as the surgical management of patients with mandibular condylar osteochondroma. Material and Method: Chapter 1: Lateral cephalometric radiographs of seventeen patients (14 females, 3 males), with average age of 25.4 years (age 14- 56) selected consecutively with rheumatoid arthritis were evaluated. All patients underwent TMJ reconstruction and mandibular advancement with TMJ Concepts custom made total joint prostheses and maxillomandibular counter-clockwise rotation at the same operation. Average post surgical follow-up was 27 months. Each patient's lateral radiographs measurements were cephalometric evaluated immediate before surgery-T1, immediate post surgery-T2 and long-term-follow-up-T3. Chapter 2: Lateral cephalometric radiographs of fifteen patients (12 females and 3 males), average age of 32.3 years (range, 13 to 56 years), with unilateral active osteochondroma of the mandibular condyle were analyzed. All patients underwent conservative condylectomy, recontouring of the remaining condylar neck stump and articular disc repositioning and indicated orthognathic surgical procedures. Average post surgical follow-up was 19 months. Each patient's lateral cephalograms were traced, digitized and measured at 3 time intervals (presurgery-T1, immediate post surgery-T2 and long-term follow-up-T3). Results: Chapter 1: Immediate after surgery the oclusal plane angle... (Complete abstract click electronic access below) / Mestre

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