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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

Microleakage in retrograde amalgams measured in vitro with an electrochemical technique a thesis submitted in partial fulfillment ... in endodontics ... /

Cox, Walter W. January 1988 (has links)
Thesis (M.S.)--University of Michigan, 1988.
112

A statistical evalaution of the comparative accuracy of filling root canals with gutta-percha and a combination of silver point with gutta-percha thesis submitted as partial fulfillment ... in endodontics and radiology ... /

Eder, Melvyn. January 1957 (has links)
Thesis (M.S.)--University of Michigan, 1957.
113

An analysis of the dimensional characteristics of endodontic files, reamers and silver points thesis submitted in partial fulfillment ... endodontics and radiology ... /

Ray, R. Richard. January 1964 (has links)
Thesis (M.S.)--University of Michigan, 1964.
114

The effectiveness of prophylactic etodolac on post-endodontic pain

Menke, Eric R. January 1999 (has links)
Thesis (M.S.)--West Virginia University, 1999. / Title from document title page. Document formatted into pages; contains vii, 62 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 41-44).
115

An analysis of the dimensional characteristics of endodontic files, reamers and silver points thesis submitted in partial fulfillment ... endodontics and radiology ... /

Ray, R. Richard. January 1964 (has links)
Thesis (M.S.)--University of Michigan, 1964.
116

Microleakage in retrograde amalgams measured in vitro with an electrochemical technique a thesis submitted in partial fulfillment ... in endodontics ... /

Cox, Walter W. January 1988 (has links)
Thesis (M.S.)--University of Michigan, 1988.
117

A statistical evalaution of the comparative accuracy of filling root canals with gutta-percha and a combination of silver point with gutta-percha thesis submitted as partial fulfillment ... in endodontics and radiology ... /

Eder, Melvyn. January 1957 (has links)
Thesis (M.S.)--University of Michigan, 1957.
118

An in-vitro study evaluating the efficacy of the Ultrasonic Bypass System using different intracanal irrigating solutions

Barney, Jason Phillip, January 2010 (has links)
Thesis (M.S.D.)--Indiana University School of Dentistry, 2010. / Title from PDF t. p. (viewed July 28, 2010) Advisor(s): Mychel Vail, Chair of the Research Committee, Joseph Legan, B. Keith Moore, Kenneth Spolnik, Susan Zunt. Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 93-109).
119

Efetividade in vitro de agentes irrigantes na neutralização de endotoxinas em canais radiculares /

Oliveira, Luciane Dias de. January 2005 (has links)
Orientador: Antonio olavo Cardoso Jorge / Banca: Mariella Vieira Pereira Leão / Banca: Brenda Paula Figueiredo de Almeida Gomes / Banca: Cristiane Yumi Koga lto / Banca: Marcia Carneiro Valera Garakis / Resumo: A proposta deste trabalho foi avaliar in vitro a efetividade das soluções de hipoclorito de sódio, clorexidina, hidróxido de cálcio e polimixina B, como agentes irrigantes, na neutralização de endotoxinas nos canais radiculares. Foram utilizados 98 dentes humanos unirradiculados, que tiveram suas coroas e ápices seccionados, padronizando o tamanho dos espécimes em 14 mm. Os mesmos foram esterilizados por radiação gama cobalto 60 e endotoxina de Escherichia coli foi inoculada nos canais radiculares de 84 espécimes. Após 24 h, todos os dentes foram instrumentados até a lima K 50, escalonados até K 80 e foram divididos em sete grupos (n=14), de acordo com a solução irrigadora: G1) NaOCI 2,5%; G2) NaOCI 5,25%; G3) clorexidina 2%; G4) Ca(OH), 0,14%; G5) polimixina B; G6 (controle positivo): água apirogênica; G7 (controle negativo) sem endotoxina e água apirogênica como agente irrigante. Foram realizadas duas coletas do conteúdo do canal radicular para verificar neutralização de endotoxinas, uma logo após a instrumentação (coleta imediata) e outra após sete dias (segunda coleta). A neutralização da endotoxina foi verificada tanto pelo método do lisado de amebócitos de Limulus como pela produção de anticorpos em cultura de linfócitos B. Os resultados obtidos no lisado foram submetidos à análise estatística (Kuskall-Wallis e Dunn) e os obtidos na produção de anticorpos foram analisados por ANOVA e teste de Tukey (5%). Na coleta imediata, verificou-se que os grupos G1 (NaOCI 2,5%), G2 (NaOCI 5,25%) e G3 (clorexidina 2%) não neutralizaram endotoxinas, sendo estatisticamente semelhantes ao G6 (controle positivo) (p>0,05), enquanto que os grupos G4 (Ca(OH)2 O, 14%) e G5 (polimixina B) demonstraram efetividade sobre LPS, com resultados estatisticamente semelhantes ao G7 (controle negativo) (p>0,05) e diferentes dos demais grupos (p<O,OS). Na coleta após sete dias... / Abstract: The purpose was to evaluate the effects of sodium hypochlorite, chiorhexidine, calcium hydroxide and polymyxin B on endotoxins in root canals. Ninety eigth freshly extracted maxillary incisors were used in this study. The crowns of teeth were sectioned near the CEJ in order to standardize the root length to 14 mm. The specimens were sterilized with 60Co gamma irradiation and standardized suspension containing Escherichia coli endotoxin was inoculated into the 84 root canals. After 24 h, the root canals were instrumented to an apical size #80 file and were randomly assigned to seven 7 groups (n=14), according to the irrigant used: G1) NaOCJ 2,5%; G2) NaOCJ 5,25%; G3) chiomexidine; G4) calcium hydroxide; G5) polymyxin B; G6) positive control; G5) negative control. Two collections of the content of the canal root were accomplished to verify endotoxin detoxification, a soon after the instrumentation (collect immediate) and other after seven days (second collect). The detoxification of endotoxin was evaluated by Limulus lysate assay and antibody production in B-lymphocytes culture. The resulls obtained in the Limulus were submitted to the statistical analysis (Kuskall-Wallis and Dunn) and obtained in the praduction of antibodies were analyzed by ANOVA and test of Tukey (5%). ln the collect immediate, the groups G1 (NaOCI 2,5%), G2 (NaOC/5,25%) and G3 (chiorhexidine) didn't endotoxin detoxify, being statistically similar to G6 (positive control) (p>0,05), while the groups G4 (Ca(OHJ2 O, 14%) e G5 (polymyxin B) demonstrated effectiveness on LPS, with resulted statistically similar to G7 (control negative) (p>0,05) and different from the other groups (p <0,05). ln the collect alter seven days, presence of LPS was detected in the groups G4 and G5, being significantly smaller to the groups G1, G2 and G3. Like this, it could be concluded that only the solutions of Ca(OH)2 and polymyxin B significantly.... / Texto em português; resumos em português e inglês / Doutor
120

Citotoxicidade e capacidade de limpeza de soluções com potencial para uso em endodontia /

Coaguila Llerena, Eric Hernán January 2018 (has links)
Orientador: Gisele Faria / Resumo: O hipoclorito de cálcio [Ca(OCl)2] e o cloridrato de octenidina (OCT) têm sido estudados como potenciais soluções irrigadoras endodônticas alternativas ao hipoclorito de sódio (NaOCl) ou à clorexidina (CHX). Os objetivos deste estudo foram avaliar a citotoxicidade do Ca(OCl)2 e do OCT (Publicação 1), e o efeito do OCT na limpeza do canal radicular (Publicação 2). Para a avaliação da citotoxicidade, foram utilizadas células do ligamento periodontal humano (hPDL) e fibroblastos da linhagem L929. As células foram expostas a diferentes diluições das soluções de Ca(OCl)2 a 2,5 e 5%, OCT a 0,1%, NaOCl a 2,5% e CHX a 2%. A viabilidade celular foi avaliada por meio dos ensaios do metil-tiazol-tetrazólio (MTT) e do vermelho neutro (NR), e a migração celular pelo teste de cicatrização. A análise estatística foi efetuada empregando ANOVA de dois fatores e teste de Bonferroni (α=0,05). Os ensaios MTT e NR mostraram, nas células do hPDL, que o OCT a 0,1% foi menos citotóxico (P<0,05), seguido da CHX a 2% e do Ca(OCl)2 a 2,5% (P<0,05). Não houve diferença significativa entre NaOCl a 2,5% e Ca(OCl)2 a 5% (P>0,05), sendo que estas soluções apresentaram maior citotoxicidade que as demais. Em L929, o resultado foi similar, exceto que não houve diferença significativa entre CHX a 2% e Ca(OCl)2 a 2,5% (P>0,05). No teste de cicatrização, tanto nas células do hPDL quanto L929, a migração celular do OCT a 0,1%, CHX a 2%, Ca(OCl)2 a 2,5% foi significativamente maior do que o Ca(OCl)2 a 5% e NaOCl a ... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Calcium hypochlorite [Ca(OCl)2] and octenidine hydrochloride (OCT) have been studied as alternative irrigating solutions to sodium hypochlorite (NaOCl) or chlorhexidine (CHX). The objectives of this study were to evaluate the cytotoxicity of Ca(OCl)2 and OCT (Publication 1), and the effect of OCT on root canal cleaning (Publication 2). For cytotoxicity evaluation, human periodontal ligament (hPDL) cells and permanent cell line of mouse fibroblasts L929 were used. The cells were exposed to different doses of different solutions: 2.5% and 5% Ca(OCl)2, 0.1% OCT, 2.5% NaOCl and 2% CHX for 10 minutes. Cell viability was assessed by methyl-thiazoltetrazolium (MTT) and neutral red (NR) assays, and cell migration was determined by the scratch assay. Statistical analysis was performed by two-way ANOVA and Bonferroni tests (α=0.05). The MTT and NR assays revealed that 0.1% OCT was less cytotoxic in hPDL cells (P<0.05), followed by 2% CHX and 2.5% Ca(OCl)2 (P<0.05). There was no significant difference between 2.5% NaOCl and 5% Ca(OCl)2 (P>0.05), but these solutions showed greater cytotoxicity than the others. The result was the same for L929 cells, except that there was no significant difference between 2% CHX and 2.5% Ca(OCl)2 (P>0.05). Scratch assay in L929 and hPDL cells showed that cell migration of 0.1% OCT, 2% CHX and 2.5% Ca(OCl)2 groups was higher than 5% Ca(OCl)2 and 2.5% NaOCl groups at 24 hours (P<0.05). For evaluation of OCT cleaning capacity, fifty human unirradicular extra... (Complete abstract click electronic access below) / Mestre

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