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Resistência à remoção por tração de coroas NiCr cimentadas sobre munhões usinados em liga de titânio, irradiados ou não por LASER / Tensile strenght of NiCr crowns cemented upon usinated titanium alloy abutments, LASER irradiated or notToledo, Fabiane Lopes 24 May 2007 (has links)
No presente trabalho, usando ensaios de remoção por tração, o objetivo foi avaliar a eficiência de 4 agentes (fosfato de zinco S. S.White, ionômero de vidro Ketac Cem Easymix, resina composta RelayX Luting 2 e resina acrílica especial Panavia 21 TC) usados para fixar coroas totais de NiCr a munhões tronco-cônicos, usinados em liga de Ti-6Al-4V. Dentre os cinqüenta munhões utilizados, 40 permaneceram com sua superfície original altamente lisa (como vieram de fábrica) e foram distribuídos em grupos de 10, para cada agente cimentante; no grupo dos 10 restantes existiu uma modificação por irradiação com LASER e cimentação apenas com fosfato. Os ensaios mecânicos foram realizados em uma máquina universal MTS 810, na velocidade de 0,5 mm/min. A respectiva Análise de Variância (ANOVA) apontou existir diferença significante entre os grupos e o teste de Tukey (p<0,05) também mostrou diferenças significantes entre eles, exceto nas comparações original/fosfato versus original/RelayX e original/fosfato versus original/KetcCem. Para os munhões não-irradiados, o melhor desempenho foi apresentado pela resina Panavia 21 (1.127,996 N); a resina composta RelyX (478,197 N) mostrou comportamento similar apenas ao do fosfato (430,662 N), o qual apresentou desempenho semelhante ao ionômero de vidro KetacCem (227,705 N). A modificação da superfície do munhão fez com que a magnitude da resistência à tração das coroas cimentadas com fosfato aumentasse para 1.514,872 N. / By means of tensile essays, NiCr total crowns were removed from usinated tronco-conical abutments composed by an Ti-6Al-4V alloy; the performance of 4 cementig agents (S. S. White zinc phoshate, Ketac Cem Easymix glass ionomer, RelayX Luting 2 composite resin and Panavia 21 TC special acrylic resin) was evaluated. Among a total of 50 abutments, 40 were used with it surface presenting high smoothness (as they come from manufacturer) and distributed in groups of 10 elements, each group for each cementing agent; the other 10 abutments had had its surfaces modified by LASER and were used only with phosphate. The mechanical essays were developed at a MTS 810 universal machine, adjusted to a 0.5 mm/m velocity. The ANOVA applied to data pointed out the existence of significant differences between groups; the subsequent Tukey´s test (p<0.05) also detected significant differences, except at comparisons of original/phosphate versus original/ RelayX and original/phosphate versus original/ KetacCem. To non-irradiated abutments, the better performance was presented by Panavia 21 (1,127.996 N); RelyX (478.197 N) showed itself similar only to phosphate (430.662 N), wich had a performance similar to that of KetacCem (227.705 N). The referred LASER irradiation promoted an increased resistance to the phosfate, which reached 1,514.872 N.
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Dental implants evaluated by periapical and panoramic radiography a thesis submitted in partial fulfillment ... oral diagnosis and radiology ... /Halk, Gerald J. January 1988 (has links)
Thesis (M.S.)--University of Michigan, 1988.
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Photoelastic stress analysis of the bone supporting a dental endosteal implant thesis submitted in partial fulfillment ... dental materials ... /Yapp, Ronald A. January 1977 (has links)
Thesis (M.S.)--University of Michigan, 1977.
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A histologic study and evaluation of endodontic endosseous implants a dissertation submitted in partial fulfillment ... in endodontics ... /Bronson, Richard. January 1972 (has links)
Thesis (M.S.)--University of Michigan, 1972.
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Experimenteller Beitrag über das Verhalten verschiedener Gewebe gegenüber Implantaten von frischem bezw. geglühtem DentinHabben, Hanna, January 1934 (has links)
Thesis (D.D.)--Universität zu Göttingen, 1934.
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Experimenteller Beitrag über das Verhalten verschiedener Gewebe gegenüber Implantaten von frischem bezw. geglühtem DentinHabben, Hanna, January 1934 (has links)
Thesis (D.D.)--Universität zu Göttingen, 1934.
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Regeneration in periodontal and endosseous implant treatmentMayfield, Lisa. January 1998 (has links)
Thesis (doctoral)--Lunds Universitet, Malmö, 1998. / Added t.p. and errata sheet inserted. Includes bibliographical references.
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Dental implants evaluated by periapical and panoramic radiography a thesis submitted in partial fulfillment ... oral diagnosis and radiology ... /Halk, Gerald J. January 1988 (has links)
Thesis (M.S.)--University of Michigan, 1988.
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A histologic study and evaluation of endodontic endosseous implants a dissertation submitted in partial fulfillment ... in endodontics ... /Bronson, Richard. January 1972 (has links)
Thesis (M.S.)--University of Michigan, 1972.
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Photoelastic stress analysis of the bone supporting a dental endosteal implant thesis submitted in partial fulfillment ... dental materials ... /Yapp, Ronald A. January 1977 (has links)
Thesis (M.S.)--University of Michigan, 1977.
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