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Physico-mechanical Properties of Resin Cement Light Cured Through Different Ceramic Spacers by Rizzante, Fabio Antonio Piola; Locatelli, Paula Minatel; Porto, Thiago Soares; Borges, Ana Flávia Sanches; Mondelli, Rafael Francisco Lia; Ishikiriama, Sérgio Kiyoshi is a Engineering article available to read on EtoBox.

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The purpose of this in vitro study was to compare the micro hardness, color stability/ΔE, and degree of conversion/DC of a resin cement light cured through different ceramic spacers. Lithium-disilicate ceramic samples were obtained from IPS E-max CAD blocks (HT A1) and IPS in-Ceram (transparent neutral); and divided in 7 groups (n = 8 for each test): CTR/control group; 06 M/0.6 mm monolithic; 12 M/1.2 mm monolithic; 20 M/2.0 mm monolithic; 06B/0.4 + 0.2 mm bilayered; 12B/1.0 + 0.2 mm bilayered; 20B/1.8 + 0.2 mm bilayered. The resin cement (Variolink veneer) was light cured through the ceramic spacers. The resin cement samples were evaluated for ΔE using a spectrophotometer after 24 h, 7days and after aging (24 h in water at 60 °C). Knoop microhardness and DC tests were conducted immediately after light curing, after 24 h and 7days. All experimental groups showed similar microhardness values, although being lower than CTR group. Similar results were observed after 7days. ΔE was similar between all groups after 24 h (except for 12B and 20B), and increased for all groups after 7days and after artificial aging, especially for thicker and bilayer groups. Only 06 M showed values similar

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Author

Rizzante, Fabio Antonio Piola; Locatelli, Paula Minatel; Porto, Thiago Soares; Borges, Ana Flávia Sanches; Mondelli, Rafael Francisco Lia; Ishikiriama, Sérgio Kiyoshi

Publisher

Elsevier ; Elsevier BV (ISSN 1751-6161)

Published

2018

Language

EN

Field

Engineering (Physical Sciences)