Apical Limit
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. "Estudo comparativo da resistência à infiltração que diferentes materiais resinosos utilizados na cimentação de retentores intra-radiculares oferecem à passagem de fluidos que atravessam a dentina" / Comparative study of the infiltration resistance that different resinous materials used in intra-radicular retainers foundation offer to the fluids passage that cross through the dentine.
This study objective is to evaluate in vitro, the resistance that different resinous materials have through the fluids passage cross through the dentine in the absence of radicular cementum. 60 human teeth given by FOUSP bank of teeth were used. The teeth were submitted to endodontic treatment according to Paiva s and Antoniazzi´s technique and stored in a
Publicado em: 2005
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14. "Influência da técnica de desobturação e do limite de obturação na extrusão apical" / Apical extrusion: influence on gutta-percha removal technique and root filling limit.
O controle da extrusão apical durante a reintervenção endodôntica é essencial para o sucesso do novo tratamento. Nesse contexto, o presente estudo teve como objetivo comparar a quantidade de material sólido extruído na desobturação de canais radiculares variando-se a técnica de esvaziamento e o limite de obturação. Foram utilizados 40 incisivos i
Publicado em: 2004
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15. EXPERIMENTAL INDUCED ANACHORESIS IN DENTAL PERIAPICAL REGION OF TEETH AFTER ROOT CANAL FILLING. STUDY IN ENDEMIC REGION FOR LEISHMANIOSIS. / Indução experimental de anacorese no periápice de dentes após obturação dos canais. Estudo em cães em região geográfica endêmica para Leishmaniose
Anachoresis is that phenomenon by which blood-borne bacteria, dyes, pigments, metallic substances, foreign proteins and other materials are attracted to, and fixed in, circumscribed areas of inflammation. This study evaluated the occurrence of anachoresis in the periapical region. 104 roots from four dogs where endodontically treated and root canals filled w
Publicado em: 2001
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16. Avaliação dos fatores relacionados ao insucesso endodontico com perda do elemento dentario
Microorganisms play an important role in the development of pulp and periapical lesions and along with the lack of coronal restoration, inadequate biomechanical preparations, level and quality of filling are related to the failure of endodontic treatment. The aim of this work was to analyse the factors involved with the failure followed by extraction of 58 r
Publicado em: 2000
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17. Feline immunodeficiency virus vectors persistently transduce nondividing airway epithelia and correct the cystic fibrosis defect
Several problems limit the application of gene transfer to correct the cystic fibrosis (CF) Cl– transport defect in airway epithelia. These include inefficient transduction with vectors applied to the apical surface, a low rate of division by airway epithelial cells, failure of transgene expression to persist, and immune responses to vectors or vector-enco
American Society for Clinical Investigation.
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18. Intestinal P Glycoprotein Acts as a Natural Defense Mechanism against Listeria monocytogenes
Mechanisms by which the intestinal epithelium resists invasion by food-borne pathogens such as Listeria monocytogenes are an evolving area of research. Intestinal P glycoprotein is well known to limit the absorption of xenobiotics and is believed to act as a cytotoxic defense mechanism. The aim of this study was to determine if intestinal P glycoprotein is i
American Society for Microbiology.
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19. Pulmonary Evaluation of Permissible Exposure Limit of Syntroleum S-8 Synthetic Jet Fuel in Mice
No current studies have systematically examined pulmonary health effects associated with Syntroleum S-8 synthetic jet fuel (S-8). In order to gain an understanding about the threshold concentration in which lung injury is observed, C57BL/6 male mice were nose-only exposed to S-8 for 1 h/day for 7 days at average concentrations of 0 (control), 93, 352, and 61
Oxford University Press.
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20. Two lineage boundaries coordinate vertebrate apical ectodermal ridge formation
Proximal–distal outgrowth of the vertebrate limb bud is regulated by the apical ectodermal ridge (AER), which forms at an invariant position along the dorsal–ventral (D/V) axis of the embryo. We have studied the genetic and cellular events that regulate AER formation in the mouse. In contrast to implications from previous studies in chick, we identified
Cold Spring Harbor Laboratory Press.
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21. Cell-to-cell movement of GFP during embryogenesis and early seedling development in Arabidopsis
There is increasing evidence for intercellular trafficking of macromolecules through plasmodesmata (PD) during plant development. Here we study the ability of PD to traffic proteins during embryogenesis and early seedling development in Arabidopsis. Transgenic lines that induce GFP expression only in meristems, MSG (meristem-specific GFP), were used to monit
National Academy of Sciences.
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22. The root surface in human teeth: a microradiographic study.
In an attempt to clarify the nature of the human cemento-dentinal junction, ground sections of incompletely formed and fully formed extracted teeth were prepared and their histology compared with their microradiographic appearances. The results showed that incompletely formed teeth possess distinctive surface layers outside the granular layer of Tomes. The e
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23. Alpha-aminoisobutyric acid efflux from the cornea of the toad, Bufo marinus.
1. Amino acids move into and out of the amphibian cornea across its inner aqueous, side only. Most alpha-aminoisobutyric acid (AIB) accumulation takes place in the corneal epithelium; the endothelium and stroma do not limit exchanges with these cells. The apical, or tear, surface of the epithelium is an impermeable barrier to the transport of amino acids. Th
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24. Cellular parameters of the shoot apical meristem in Arabidopsis.
The shoot apical meristem (SAM) is a small group of dividing cells that generate all of the aerial parts of the plant. With the goal of providing a framework for the analysis of Arabidopsis meristems at the cellular level, we performed a detailed morphometric study of actively growing inflorescence apices of the Landsberg erecta and Wassilewskija ecotypes. F