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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

Effects of a mineralized human cancellous bone allograft in regeneration of mandibular class II furcation defects a thesis submitted in partial fulfillment ... for the degree of Master of Science in Periodontics ... /

Tsao, Yi-Pin. January 2005 (has links)
Thesis (M.S.)--University of Michigan, 2005. / Includes bibliographical references.
2

Improved closure rate of Class III furcations with physically assisted cell migration and Guidor® membranes

Mehlbauer, Michael Joseph. January 1995 (has links)
Thesis (M.S.)--University of Louisville, 1995. / Typescript (Xerox copy). School of Dentistry, Department of Biological and Biophysical Sciences. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [84]-97).
3

Improved closure rate of Class III furcations with physically assisted cell migration and Guidor® membranes

Mehlbauer, Michael Joseph. January 1995 (has links)
Thesis (M.S.)--University of Louisville, 1995. / Typescript (Xerox copy). School of Dentistry, Department of Biological and Biophysical Sciences. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [84]-97).
4

Efeitos da intrusão ortodôntica na reparação de lesões de furca grau III em cães, e da presença de TNFα e/ou IL-β 1 na mecanoresposta de células ósseas in vitro /

Silva, Vanessa Camila da. January 2008 (has links)
Resumo: O objetivo dessa tese foi avaliar os efeitos da intrusão ortodôntica no processo de reparação de lesão de furca grau III em cães, e da presença de fator de necrose tumoral alfa (TNFα) e/ou interleucina-1 beta (IL-1ß) na mecanoresposta de células com característica de osteócitos e osteoblastos in vitro. No estudo in vivo, lesões de furca grau III foram criadas em pré-molares inferiores de sete cães. Após 75 dias, as lesões foram aleatoriamente tratadas com cirurgia a retalho (OFD) associada ou não à regeneração tecidual guiada (GTR) e enxerto ósseo autógeno (BA). Após um mês, iniciou-se a intrusão ortodôntica (I) em parte dos dentes tratados pelas duas diferentes abordagens (grupos teste), por meio de ancoragem em miniimplantes. Os cães foram sacrificados após três meses de movimentação e um mês de contenção. Todas as lesões de furca grau III foram reduzidas para grau II ou I nos grupos teste. O mesmo foi observado em 50% das lesões nos grupos controle (sem movimentação). O nível de inserção clínico foi reduzido nos grupos teste, no final da contenção (p<0.01). O grupo OFD+I apresentou maior preenchimento ósseo que os demais grupos (p<0.05), demonstrando superioridade desta associação, no tratamento de lesões de furca grau III, em cães. Esses resultados levantaram a hipótese de que o processo de degradação da membrana e/ou enxerto ósseo interagiria negativamente sobre o processo de reparo quando associado a forças ortodônticas, pois a presença de mediadores inflamatórios estaria intensificada. É conhecido que a alteração tecidual proveniente da movimentação ortodôntica é resultado da ação de mediadores químicos sobre as células dos tecidos periodontais. Portanto, buscamos avaliar in vitro a ação de duas citocinas pró-inflamatórias, TNFα e IL-1ß, sobre células ósseas em presença e ausência de carga mecânica. / Abstract: The aim was to assess the effects of orthodontic intrusion on the healing of class III furcation lesions in dogs, and of the presence of tumor necrosis factor alpha (TNFα) and/or interleukin-1 beta (IL-1ß) on the mechanoresponse of osteocyte and osteoblast-like cells in vitro. In the in vivo study, class III furcation lesions were created in lower pre-molars of seven mongrel dogs. After 75 days, teeth were randomly treated with open flap debridment (OFD) associated or not to guided tissue regeneration (GTR) and bone autograft (BA). After one month, teeth were randomly assigned to orthodontic intrusion using mini-implants anchorage or no movement. Dogs were sacrificed after three months of movement and one month contention. All class III furcations were closed or reduced to class II or I lesions in the intrusion groups while 50% of the class III lesions in non-moved teeth remained unchanged. Clinical attachment level was reduced in the intrusion groups by the end of contention (p<0.01). OFD + I presented smaller soft tissues area and larger bone tissue area than other groups (p<0.05). Orthodontic intrusion with mini-implants anchorage improved healing of class III furcation defects after OFD in dogs. Based on these results we hypothesized that degradation of membrane and/or bone autograft can negatively interfere on repair when associated to orthodontic movement because inflammatory mediators are intensified. It's known that cytokines are present during orthodontic movement which are acting on periodontal cells. Therefore we evaluated in vitro the effects of two pro-inflammatory cytokines, TNFα and IL-1ß, on bone cells in presence or absence of mechanical loading. / Orientador: Joni Augusto Cirelli / Coorientador: Rosemary Adriana Chiérici Marcantonio / Banca: Ana Cláudia Moreira Melo / Banca: Enilson Antonio Sallum / Banca: Ary dos Santos Pinto / Banca: Silvana Regina Perez Orrico / Doutor
5

Regeneration of class II furcation defects using Guidor resorbable membranes with and without systemic antibiotics

Vest, Tracey Michelle. January 1998 (has links)
Thesis (M.S.)--University of Louisville, 1998. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
6

Regeneration of class II furcation defects using Guidor resorbable membranes with and without systemic antibiotics

Vest, Tracey Michelle. January 1998 (has links)
Thesis (M.S.)--University of Louisville, 1998. / Includes bibliographical references.
7

Avaliação imuno-histoquímica de defeitos de furca classe II tratados pelo retalho deslocado coronariamente, associado ou não à regeneração tecidual guiada e enxerto  de tecido reparativo de alvéolos / Immunohistochemical evaluation of class II furcation defects treated by coronally positionated flap associated or not with guided tissue regeneration and alveolar socket reparative tissue graft

Hayashi, Fernando 03 August 2009 (has links)
O objetivo desta pesquisa foi avaliar a reparação de defeitos de furca classe II em cães tratados com o retalho deslocado coronariamente, sozinho ou em associação com a regeneração tecidual guiada e o enxerto de tecido reparativo de alvéolos utilizando uma análise imuno-histoquímica. Os defeitos foram criados nos 2os, 3os e 4os pré-molares direitos e esquerdos mandibulares em quatro cães sem raça definida. No lado teste de cada cão, após a instrumentação radicular, os defeitos foram enxertados com o tecido reparativo, removidos de locais de extração dental com cinco dias de reparação. As áreas cirúrgicas foram recobertas com membranas absorvíveis e o retalho deslocado coronariamente suturado. No lado controle, após a instrumentação radicular, o retalho também foi deslocado coronariamente e suturado. Após 45 dias os cães foram sacrificados. As análises imuno-histoquímicas para osteonectina, osteopontina e sialoproteína óssea foram feitas no plano vestíbulo-lingual das furcas dos 3os pré-molares. As marcações imuno-histoquímicas foram similares entre os grupos demonstrando que eles provavelmente estavam em um estágio reparativo semelhante. / The aim of this research was to evaluate the repair of class II furcation defects in dogs treated with the coronally positioned flap alone or in association with guided tissue regeneration and post extraction tissue graft using an immunohistochemical analysis. The defects were created on the lower jaw right and left 2nd, 3rd and 4th premolars on four mongrel dogs. On the test side of each dog, after root instrumentation, the defects were grafted with a alveolar socket reparative tissue removed from five days healing teeth extraction sites. The surgical areas were covered with absorbable membranes and a coronally positionated flap was sutured. At the control side, after root instrumentation the coronally positionated flap was sutured. After 45 days, the dogs were sacrificed. The immunohistochemical analyses for osteonectin, osteopontin and bone sialoprotein were done on the bucal-lingual plane extent of the 3rd premolars furcations. The immunohistochemical expressions were similar among the two groups showing that they probably were in a similar healing stage.
8

Avaliação imuno-histoquímica de defeitos de furca classe II tratados pelo retalho deslocado coronariamente, associado ou não à regeneração tecidual guiada e enxerto  de tecido reparativo de alvéolos / Immunohistochemical evaluation of class II furcation defects treated by coronally positionated flap associated or not with guided tissue regeneration and alveolar socket reparative tissue graft

Fernando Hayashi 03 August 2009 (has links)
O objetivo desta pesquisa foi avaliar a reparação de defeitos de furca classe II em cães tratados com o retalho deslocado coronariamente, sozinho ou em associação com a regeneração tecidual guiada e o enxerto de tecido reparativo de alvéolos utilizando uma análise imuno-histoquímica. Os defeitos foram criados nos 2os, 3os e 4os pré-molares direitos e esquerdos mandibulares em quatro cães sem raça definida. No lado teste de cada cão, após a instrumentação radicular, os defeitos foram enxertados com o tecido reparativo, removidos de locais de extração dental com cinco dias de reparação. As áreas cirúrgicas foram recobertas com membranas absorvíveis e o retalho deslocado coronariamente suturado. No lado controle, após a instrumentação radicular, o retalho também foi deslocado coronariamente e suturado. Após 45 dias os cães foram sacrificados. As análises imuno-histoquímicas para osteonectina, osteopontina e sialoproteína óssea foram feitas no plano vestíbulo-lingual das furcas dos 3os pré-molares. As marcações imuno-histoquímicas foram similares entre os grupos demonstrando que eles provavelmente estavam em um estágio reparativo semelhante. / The aim of this research was to evaluate the repair of class II furcation defects in dogs treated with the coronally positioned flap alone or in association with guided tissue regeneration and post extraction tissue graft using an immunohistochemical analysis. The defects were created on the lower jaw right and left 2nd, 3rd and 4th premolars on four mongrel dogs. On the test side of each dog, after root instrumentation, the defects were grafted with a alveolar socket reparative tissue removed from five days healing teeth extraction sites. The surgical areas were covered with absorbable membranes and a coronally positionated flap was sutured. At the control side, after root instrumentation the coronally positionated flap was sutured. After 45 days, the dogs were sacrificed. The immunohistochemical analyses for osteonectin, osteopontin and bone sialoprotein were done on the bucal-lingual plane extent of the 3rd premolars furcations. The immunohistochemical expressions were similar among the two groups showing that they probably were in a similar healing stage.
9

Comparison of linear and injected impression material techniques to determine furcation volume of maxillary molars

Dhaliwal, Harpreet S. January 1997 (has links)
Thesis (M.S.)--University of Louisville, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
10

Comparison of linear and injected impression material techniques to determine furcation volume of maxillary molars

Dhaliwal, Harpreet S. January 1997 (has links)
Thesis (M.S.)--University of Louisville, 1997. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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