Tooth Germs
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Crown dilaceration in permanent teeth after trauma to the primary predecessors: report of three cases
Crown dilaceration of permanent teeth occurs due to the non-axial displacement of the already formed hard tissue portion of the developing crown at an angle to their longitudinal axis due to trauma to the primary predecessors. This is a rare condition, representing only 3% of the total of injuries to developing teeth and usually occurs in permanent maxillary
Braz. Dent. J.. Publicado em: 2012-10
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2. AvaliaÃÃo da relaÃÃo entre a erupÃÃo dental dos terceiros molares e o comprimento da mandÃbula
The aim of this work was to evaluate the eruption of the third molar teeth in the length of the mandible using the orthodontic documentation obtained between 2005 and 2006 as sampling method, a total of 193 cases of both sexes, male and female. The cephalometric analysis and panoramic radiographic studies were chosen from two clinics randomly selected in the
Publicado em: 2007
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3. AnÃlise morfolÃgica do ÃrgÃo do esmalte em primeiros molares superiores de ratos tratados com fluoxetina
Estudos prÃvios avaliaram a presenÃa de serotonina durante a odontogÃnese no interior do epitÃlio e mesÃnquima dentÃrio sugerindo a sua participaÃÃo no desenvolvimento dos dentes. A serotonina regula uma enorme variedade de processos do desenvolvimento durante a embriogÃnese. Assim sendo, no presente estudo utilizamos a fluoxetina, um inibidor selet
Publicado em: 2007
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4. Efeitos do fluor no metabolismo glicolitico do germe dental de rato
Fluoride was identified as an activator of adenylate cyclase. The aim of the present work was to verify its effects on glicolitic metabolism of rat tooth germ, which is related to adenylate cyclase activity. Eight-days old rat germs were submmited to treatments with, sodium fluoride (NaF), sodium monofluoridephosphate (Na MFP) and fluoroaluminate (AlF 4 -).
Publicado em: 1997
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5. Current knowledge of tooth development: patterning and mineralization of the murine dentition
The integument forms a number of different types of mineralized element, including dermal denticles, scutes, ganoid scales, elasmoid scales, fin rays and osteoderms found in certain fish, reptiles, amphibians and xenarthran mammals. To this list can be added teeth, which are far more widely represented and studied than any of the other mineralized elements m
Blackwell Science Inc.
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6. The Development of Tooth Germs in vitro
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7. The development of tooth germs on the chick chorio-allantois
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8. Activin is an essential early mesenchymal signal in tooth development that is required for patterning of the murine dentition
Development of the mammalian tooth has been intensively studied as a model system for epithelial/mesenchymal interactions during organogenesis, and progress has been made in identifying key molecules involved in this signaling. We show that activin βA is expressed in presumptive tooth-germ mesenchyme and is thus a candidate for a signaling molecule in tooth
Cold Spring Harbor Laboratory Press.
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9. FGF4, a direct target of LEF1 and Wnt signaling, can rescue the arrest of tooth organogenesis in Lef1−/− mice
Lymphoid enhancer factor (LEF1), a nuclear mediator of Wnt signaling, is required for the formation of organs that depend on inductive interactions between epithelial and mesenchymal tissues. In previous tissue recombination experiments with normal and Lef1−/− tooth germs, we found that the effect of LEF1 expression in the epithelium is tissue nonautonom
Cold Spring Harbor Laboratory Press.
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10. Morphology and function of maturation ameloblasts in kitten tooth germs.
In order to clarify the morphology and function of maturation ameloblasts, kitten tooth germs were examined using an ultrastructural tracer technique. Kitten maturation ameloblasts were divided into two cell types: a ruffle-ended type showing plasma membrane infoldings and invaginations at the distal cell surface and a smooth-ended type showing a non-invagin
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11. Surface structure of tooth germs from newborn infants: a light and scanning electron microscopical study.
Tooth germs from the mandibles of 5 stillborn infants were examined by scanning electron microscopy and light microscopy in order to investigate the surgace structure at different stages of mineralization. The surface of the completed enamel of the incisal third of the incisors was smooth, indicating that amelogenesis was at an end. The interface relief betw
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12. The pattern of histogenesis and growth of tooth plates in larval stages of extant lungfish.
Comparison of new data obtained in this study on Protopterus aethiopicus with that published on Protopterus aethiopicus and Neoceratodus forsteri has confirmed the suggestion that the pattern of histogenesis of tooth plates in the early larval stages is very similar in the two genera. These similarities are more apparent both when a common terminology is ado