Enamel Maturation
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Enamel crystals of mice susceptible or resistant to dental fluorosis: an AFM study
Objective: This study aimed to assess the overall apatite crystals profile in the enamel matrix of mice susceptible (A/J strain) or resistant (129P3/J strain) to dental fluorosis through analyses by atomic force microscopy (AFM). Material and Methods: Samples from the enamel matrix in the early stages of secretion and maturation were obtained from the inc
J. Appl. Oral Sci.. Publicado em: 2014-06
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2. Efeito do fluor sobre a matriz organica do esmalte dentario de camundongos / Fluoride effect in the secretory-stage enamel organic extracellular matrix of mice
Dental fluorosis is characterized by alterations in the aspect of mature enamel due to hypomineralization, it is caused by chronic ingestion of fluoride during tooth development. Fluoride seems to influence on formation of enamel organic matrix. Previous studies have shown that the organic extracellular matrix of the enamel secretory phase is birefringent, e
Publicado em: 2010
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3. In-depth analysis of the enamel maturation in teeth with different eruptive ages by the longitudinal microhardness / Análise da maturação em profundidade do esmalte de dentes com diferentes idades eruptivas por meio da microdureza longitudinal
Estudos epidemiológicos e experimentos com animais têm demonstrado que a susceptibilidade à doença cárie é maior logo após o período pós-eruptivo dos dentes, decrescendo posteriormente. Na literatura, várias pesquisas ressaltam a importância do conhecimento das características do esmalte durante e após o processo de erupção, assim como dos mec
Publicado em: 2009
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4. Ultrastructural and immunohistochemical study of the influence of fluoride excess on the development of rat incisor tooth buds
Little information is available on the pathogenesis of fluorosis during the fetal and initial postnatal period. In the present study, female rats received 0 (control), 7 or 100 ppm of sodium fluoride in drinking water, one week before breeding and throughout gestation and nursing periods. The hemimandibles of the offspring were collected at 0, 7 and 14 days
Journal of Applied Oral Science. Publicado em: 2007-08
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5. Desenvolvimento osseo e dentario : aspectos biologicos, bioquimicos e moleculares da remodelação da matriz extracelular regulada pelas metaloproteinases de matriz e seus inibidores / Dental and bone development : biology, biochemistry, and molecular aspects of the matrix metalloproteinases and their inhibitors during extracellular matrix remodeling
Our objective was to analyse the spatial-temporal distribution of MMP-2, MMP-9, TIMP-1, TIMP-2 and RECK during development of mineralized tissue (bone, enamel, and dentine) in embryos, newborn, and adult mice by immunohistochemistry and in situ hybridization. During rat amelogenesis, at the secretion phase, MMPs and RECK were immunostained in the ameloblast
Publicado em: 2007
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6. Avaliação da desmineralização produzida por desafio cariogênico in situ em esmalte dentário com diferentes idades pós-eruptivas / Evaluation of demineralization produced by in situ cariogenic challenge on dental enamel at different posteruptive age
O objetivo deste estudo in situ foi avaliar a microdureza superficial e longitudinal do esmalte de dentes com diferentes idades pós-eruptivas (antes da erupção na cavidade bucal, após 2 a 3 anos da erupção, após 4 a 10 anos da erupção e mais de 10 anos de erupção), submetidos aos desafios cariogênicos. Para isso, foram utilizados 24 espécimes de
Publicado em: 2007
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7. Estudo morfológico ultraestrutural e imuno-histoquímico da influência do excesso de flúor no desenvolvimento do germe dental de incisivo de rato / Morphological ultrastructural and immunohistochemical study of the fluorine excess influence on rat incisor tooth germ development
The dental fluorosis is a result of fluorine toxicity during odontogenesis. Several experimental models have been used in attempt to explain the fluorine pathogenesis in enamel, but during the fetal or the initial postnatal period, there is not much information about its action. For this reason, in this research, the female rats received 0, 7 or 100 ppm of s
Publicado em: 2006
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8. 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
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9. Birrefringencia da matriz organica do esmalte dentario
The formation of dental enamel is a complex biological process, which depends on a well-structured organic matrix. Recent evidences indicate that the components of this matrix can interact to form a supramolecular structure. The biological significance of this supramolecular organization is not clearly understood. In part this occurs due to methodological di
Publicado em: 2005
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10. Efeitos da ingestão do alcool durante a gestação na imunoexpressão do EGF na amelogenese e dentinogenese do 1º molar inferior de ratos
Previous studies have reported that the maternal exposure to alcohol reduces the maxilo-fadal development, including a delay in the formation and eruption of the tooth, as well as, enamel anomalies. The mechanisms of these deleterious effects are not fully clarified. The objective of this study was to analyze using polyclonal antibody of the Epidermal Growth
Publicado em: 2004
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11. Hypomaturation Enamel Defects in Klk4 Knockout/LacZ Knockin Mice*
Kallikrein 4 (Klk4) is believed to play an essential role in enamel biomineralization, because defects in KLK4 cause hypomaturation amelogenesis imperfecta. We used gene targeting to generate a knockin mouse that replaces the Klk4 gene sequence, starting at the translation initiation site, with a lacZ reporter gene. Correct targeting of the transgene was con
American Society for Biochemistry and Molecular Biology.
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12. The arrangement of ameloblasts on the surface of maturing enamel of the rat incisor tooth.
The location of striated border cells versus non-striated border cells during enamel maturation in the rat incisor was studied by light microscopy. Serial cross sections of the lower incisors were examined from a segment of the incisor in sections which also included the first molar tooth. In the series recorded here every cross section showed both striated