Consulta: subjectFacets:"Enamel"
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Data/hora: 06/06/2024 12:56:50

Morphological Alterations of the Surfaces of Enamel and Dentin of Deciduous Teeth Irradiated with Nd:YAG, C0(2)and Diode Lasers
Provedor de dados: 77
Autores: Souza,Mónica Rodrigues de; Watanabe,Ii-Sei; Azevedo,Luciane H; Tanji,Edgar Y.
In this work, we studied the effects of C0(2), Nd:YAG and diode lasers on the enamel and dentin of deciduous human teeth. After the irradiations, the samples were duly prepared and set up on metallic bases, covered with gold and examined in the scanning electron microscope. The results showed that the irradiation with the C0(2) mode locked laser with 1.0 W power caused melting and irregularities with small cavities on the surface of the enamel. The irradiated area on the dentin surface appeared circular and well delimited, containing blocks of dentin and cracks. By using the pulsed Nd:YAG laser with 1.0 W mean power and 10 Hz frequency, the enamel surface presented granules of molten enamel, with a typical melting look. The irradiated dentin surface...
Tipo: Journal article
Palavras-chave: Deciduous tooth; Enamel; Dentin; C0(2) laser; Nd:YAG laser; Diode laser; Scanning electron microscope.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000200021

Morphology of the Cement-Enamel Junction (CEJ), Clinical Correlations
Provedor de dados: 77
Autores: Roa,Ignacio; del Sol,Mariano; Cuevas,Johan.
The following study describes the mineralized tissue distribution which composes the cement-enamel junction, in a simple of Chilean people, comparing several teeth surfaces. Cervical area was observed (M-V, D-V, M-L/P, D-L/P sites) from 136 (n=68) longitudinal sections on premolars and incisors, with orthodontic or prosthetic reasons for exodontia, which were analyzed by optical microscope in order to identify the type of cement-enamel junction. For that measurement it was Choquet's criteria, founding four types: 1) cement over enamel, 2) enamel over cement, 3) vis a vis, 4) Gap presence between enamel, cement and exposed dentin. The objective of this study was to determine the prevalence of these. As result, it was observed that there was no association...
Tipo: Journal article
Palavras-chave: Enamel; Cement; CEJ; Clinical aspects.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000300018