Effects of acids used in the microabrasion technique: microhardness and confocal microscopy analysis
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Effects of acids used in the microabrasion technique: microhardness and confocal microscopy analysis

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Effects of acids used in the microabrasion technique: microhardness and confocal microscopy analysis

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dc.contributor.author Pini, Núbia Inocencya Pavesi es
dc.contributor.author Lima, Débora Alves Nunes Leite es
dc.contributor.author Ambrosano, Gláucia Maria Bovi es
dc.contributor.author da Silva, Wander José es
dc.contributor.author Aguiar, Flávio Henrique Baggio es
dc.contributor.author Lovadino, José Roberto es
dc.date.accessioned 2015-11-23T13:53:21Z
dc.date.available 2015-11-23T13:53:21Z
dc.date.issued 2015 es
dc.identifier.uri http://hdl.handle.net/10550/48359
dc.source Pini, Núbia Inocencya Pavesi ; Lima, Débora Alves Nunes Leite ; Ambrosano, Gláucia Maria Bovi ; da Silva, Wander José ; Aguiar, Flávio Henrique Baggio ; Lovadino, José Roberto. Effects of acids used in the microabrasion technique: microhardness and confocal microscopy analysis. En: Journal of Clinical and Experimental Dentistry, 2015, Vol. 7, No. 4: 506-512 es
dc.subject Odontología es
dc.subject Ciencias de la salud es
dc.title Effects of acids used in the microabrasion technique: microhardness and confocal microscopy analysis es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.description.abstractenglish Background: This study evaluated the effects of the acids used in the microabrasion on enamel. Material and Methods: Seventy enamel/dentine blocks (25 mm 2 ) of bovine incisors were divided into 7 groups (n=10). Experimental groups were treated by active/passive application of 35% H 3 PO 4 (E1/E2) or 6.6% HCl (E3/ E4). Control groups were treated by microabrasion with H 3 PO 4 +pumice (C5), HCl+silica (C6), or no treatment (C7). The superficial (SMH) and cross-sectional (CSMH; depths of 10, 25, 50, and 75 μm) microhardness of enamel were analyzed. Morphology was evaluated by confocal laser-scanning microscopy (CLSM). Data were analyzed by analysis of variance (Proc Mixed), Tukey, and Dunnet tests (α=5%). Results: Active application (E1 and E3) resulted in higher microhardness than passive application (E2 and E4), with no difference between acids. For most groups, the CSMH decreased as the depth increased. All experimental groups and negative controls (C5 and C6) showed significantly reduced CSMH values compared to the control. A significantly higher mean CSMH result was obtained with the active application of H 3 PO 4 (E1) compared to HCl (E3). Passive application did not result in CSMH differences between acids. CLSM revealed the conditioning pattern for each group. Conclusions: Although the acids displayed an erosive action, use of microabrasive mixture led to less damage to the enamel layers es

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