Enamel Organ
Mostrando 1-12 de 18 artigos, teses e dissertações.
-
1. Apexification with white MTA in an immature permanent tooth with dens invaginatus
Dens invaginatus, also known as "dens in dente", is a developmental dental anomaly resulting in an invagination of the enamel organ into the dental papilla. These cases present technical difficulties to the root canal treatment. Apexification using an apical plug of mineral trioxide aggregate (MTA) has been indicated as an alternative to long-term intracanal
Braz. J. Oral Sci.. Publicado em: 2013-03
-
2. Morphological analysis of the enamel organ in rats treated with fluoxetine
PURPOSE: Previous studies have evaluated the presence of serotonin in the dental epithelia and mesenchyme during odontogenesis, suggesting its participation in tooth development. MATERIALS AND METHODS: Here, we used fluoxetine, a selective serotonin re-uptake inhibitor, at a dose of 10 mg/kg, administered for 20 days during pregnancy in 12 Wistar rats to exa
Clinics. Publicado em: 2010
-
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
-
4. Mineralização do esmalte apos a remoção parcial dos ameloblastos pos-secretorios em incisivos inferiores de ratos / Enamel mineralization after partial removal of post-secretory ameloblasts in the rat lower incisors
The enamel organ of rat incisors at the maturation stage of amelogenesis (from the region were enamel rods are visible and the enamel is completely acid-soluble) was removed and the limits of the removal (surgical region) were marked by notches made at the labial face of the enamel. The enamel organ, from the incisal notch up to the alveolar crest, was damag
Publicado em: 2005
-
5. Distribuição de glicoproteinas no ligamento periodontal e no periodonto relacionado ao esmalte do incisivo de camundongo, em diferentes condições funcionais : estudo radioautografico pela incorporação de [3H]-Fucose
The periodontal ligament of unimpeded rat incisors show an increase in the amount of non-collagens proteins. To analyse if such increase is related to the higher eruption rate shown by those hipofunctional teeth we visualized through radiautography the uptake of 3H-fucose by periodontal tissues. Female mice were divided in three groups of four animals each.
Publicado em: 2004
-
6. Are there structural alterations in the enamel organ of offspring of rats with alloxan-induced diabetes mellitus?
A hipoplasia de esmalte é a mais comum dentre as alterações de desenvolvimento do dente humano, e ocorre com freqüência em dentes decíduos de filhos de mães diabéticas. O presente estudo experimental analisou, por meio de microscopia óptica e morfometria, o órgão do esmalte de incisivos inferiores de filhotes de ratas com diabetes aloxânico, indu
Brazilian Dental Journal. Publicado em: 2003
-
7. Laser Ablation of dental substrates: enamel, dentin and composite resins. / Ablação a laser de substratos dentais: esmalte,dentina e resinas compostas.
Laser is now established as a suitable tool for the selective and precise removal of carious dental tissue. If correctly used, lasers minimize the losses of healthy tissue besides the comfort that it ean promote to patients. The knowledge of basic aspects of laser ablation of dental tissues and materials can lead to the development of a set of parameters tha
Publicado em: 2002
-
8. Fine structure of the stratum intermedium, stellate reticulum, and outer enamel epithelium in the enamel organ of the kitten.
Stratum intermedium, stellate reticulum and outer enamel epithelium at the secretion stage in lower second molars of 1 week old kittens were studied with the electron microscope after perfusion fixation. All cell types had a well-developed Golgi apparatus, free ribosomes and little RER. In the stratum intermedium, cytoplasmic processes occasionally contained
-
9. The effect of fixation on the ameloblast layer of the enamel organ in the rat
-
10. Ameloblast modulation in the maturation zone of the rat incisor enamel organ. A light and electron microscopic study.
-
11. Sialylation of terminal saccharides of glycoconjugates expressed by murine molar tooth germs developing in vitro and in vivo.
During development of the mammalian tooth germ the pattern of terminal saccharides of glycoconjugates changes, with many structures losing lectin reactivity in a consistent pattern. This study investigated whether the epitopes are lost or become masked by terminal sialylation, using a combination of neuraminidase treatment of sections and sialic acid-reactiv
-
12. A clinical and electron microscopic study of a calcifying epithelial odontogenic tumour
The clinical features and the histological and ultrastructural appearances of a case of calcifying epithelial odontogenic tumour are described. The ultrastructural features of the cells of this tumour are comparable to cells of the stratum intermedium of the enamel organ. It is suggested that the amyloid-staining material found in this tumour is a cellular s