Teeth Dna
Mostrando 13-24 de 52 artigos, teses e dissertações.
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13. Bacteriological analysis of pulp infection in deciduous teeth. / Análise bacteriológica de infecções pulpares em dentes decíduos.
Foram analisados dentes decíduos com cárie dental profunda de 110 crianças, sendo coletadas 103 amostras de polpa necrosada e 7 de fístulas gengivais. Morfotipos bacterianos foram visualizados pelas colorações de Gram e Brenn-Brown, e os DNA foram obtidos e usados na detecção bacteriana por PCR. A predominância de cocos Gram positivos (81,8%) e coco
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2011
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14. Viabilidade da utilização de amostras biologicas obtidas de dentes humanos para obtenção de perfis geneticos de DNA / Viability of the acquirement of genetic DNA profiles using human teeth
Several factors related to how and where human teeth are found in forensic cases still a challenge to obtain genetic DNA profiles, as using theses elements as source for genetic material. This study aimed to compare the DNA extraction done through blood stains in FTA® paper cards, used as control group, and compare the mapped alleles from these to ones extr
Publicado em: 2009
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15. Identificação do padrão de metilação nos genes IFN- e IL-10 em polpa dental humana
DNA methylation is characterized by addition of methyl groups in cytosines within CpG islands. Unmethylated islands are related with transcriptionally active structure, whereas methylated DNA recruits methyl-binding proteins that promotes chromatin compactation. Although epigenetic events can influence the expression of cytokines, it has not been already inv
Publicado em: 2009
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16. Using the technique of genetic identification: picture of reality official identification of the Brazilian and the importance of role of dentistry-on forensic team / Utilização da técnica de identificação genética: panorama da realidade dos serviços oficiais de identificação brasileiros e a importância da atuação do cirurgião-dentista na equipe forense
The analysis of DNA can be considered major technical advances for criminal investigation since the discovery of fingerprints. Its emergence has brought new paradigms for the criteria used in the formulation of culpability in the field of criminal law, as well as the establishment of legal certainty in relations of affiliation, field of civil law. It was inc
Publicado em: 2009
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17. Apoptosis in pulp elimination during physiological root resorption in human primary teeth
Cinqüenta amostras de polpas de dentes humanos hígidos com indicação para extração foram estudadas a fim de verificar a participação da apoptose na eliminação pulpar durante a reabsorção radicular fisiológica. As amostras foram divididas em 2 grupos: um grupo de estudo composto por 30 polpas de dentes decíduos hígidos com reabsorção radicula
Brazilian Dental Journal. Publicado em: 2009
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18. Identificação dos microorganismos presentes na saliva, na coroa dental e no canal radicular de dentes indicados ao retratamento endodontico e analise da suscetibilidade antimicrobiana, dos fatores de virulencia e da diversidade genetica dos Enterococcus faecalis isolados / Identification of microorganism present in saliva, crown and root canal of endodontically treated teeth and analysis of antimicrobial susceptibility, virulence factors and diversity of clonal types of Enterococcus faecalis isolated
The aims of this study were: (a) to identify Enterococcus spp., Staphylococcus spp., Candida spp. and enterobacteria in saliva of patients with failure of the endodonticallytreated teeth, (b) to investigate the microbiota in the restorative material and within root canals of the same subjects, (c) to determine the antimicrobial susceptibility of E. faecalis
Publicado em: 2009
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19. Analise do padrão de metilação da região promotora do gene humano PAX9 (-947 - +251) e analise in vitro da sua atividade transcricional / New insights into methylation pattern and transcriptional activity of human PAX9 gene (-947 - +251) in vitro
PAX9 is a key regulator during tooth development and plays an essential role in the patterning of murine and human dentition. In humans, mutations in PAX9 are associated with unique phenotypes of familial tooth agenesis that mainly involve posterior teeth. The objectives of this study were to gain new insights into the transcriptional activity and DNA methyl
Publicado em: 2009
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20. Identificação da microbiota das lesões endo-periodontais por cultura e PCR e sua suscetibilidade ao preparo quimico-mecanico e a medicações intracanais entre sessões de atendimento / Identification of endodontic-periodontal lesions microbiota by culture and PCR and their susceptibility to chemo-mechanical preparation and intracanal dressings between appointments
The aims of this study were to investigate the microbiota of root canals (RC) and periodontal pockets (PP) from teeth with pulp necrosis, periapical lesion, gingival bleeding and periodontal pockets by culture and PCR; to verify the ability of chemo-mechanical preparation (CMP) and intracanal dressings (2% chorhexidine, calcium hydroxide and association of b
Publicado em: 2009
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21. Radiographic and microbiological analysis of root canals of dogs teeth with periapical lesions before and after chemo-mechanical preparation / Analise radiografica e microbiologica de canais radiculares de dentes de cães com lesão periapical antes e apos preparo quimico-mecanico
Os objetivos deste trabalho foram: investigar microbiologicamente, por método de cultura e pelo método do Checkerboard DNA-DNA hybridization, canais radiculares antes (C1) e após preparo químico-mecânico (C2); e, analisar radiograficamente, lesões periapicais induzidas em dentes de cães, avaliando a possível relação entre comprimento de dente e tam
Publicado em: 2009
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22. Expression of type I collagen, MMP-2, MMP-8, MMP-14 and TIMPS in the periodontal ligament of rat incisors in normal and altered functional conditions / Expressão de colageno tipo I, MMP-2, MMP-8, MMP-14 eTIMPS no ligamento periodontal de incisivos de ratos em condições funcionais normal e alteradas
Periodontal ligament is a connective tissue that provides anchorage and support to the tooth, and it has a probable role in the tooth eruption. The extracelular matrix consists predominantly of collagen type I (Col-1) and the turnouver of collagen fibers is intense. Matrix metalloproteinases (MMPs) are members of a family of enzymes capable to degrade almost
Publicado em: 2008
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23. Association between polymorphism in the promoter region (G/C-915) of PAX9 gene and third molar agenesis
PURPOSE: Hypodontia is the congenital absence of one or more (up to six) permanent and/or deciduous teeth, being one of the most common alterations of the human dentition. Genetic polymorphisms are variations of DNA sequences occurring in a population. This study investigated whether G-915C single nucleotide polymorphism (SNPs) in the PAX9 gene promoter is a
Journal of Applied Oral Science. Publicado em: 2007-10
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24. Análise microbiológica de infecções endodônticas utilizando a associação das técnicas do Multiple Displacement Amplification (MDA) e da Hibridização DNA-DNA (Checkerboard)
Multiple Displacement Amplification (MDA) has been used to uniformly amplify bacterial genomes present in small samples, providing abundant targets for molecular analysis. The purpose of this investigation was to combine MDA and checkerboard DNA-DNA hybridization to examine the microbiota of endodontic infections. 66 samples were collected from teeth with en
Publicado em: 2007