Physico-mechanical properties of resin cement light cured through different ceramic spacers

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

doi:10.1016/j.jmbbm.2018.06.001

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Physico-mechanical properties of resin cement light cured through different ceramic spacers

Journal article

Open access

Peer reviewed

Physico-mechanical properties of resin cement light cured through different ceramic spacers

Fabio Antonio Piola Rizzante, Paula Minatel Locatelli, Thiago Soares Porto, Ana Flavia Sanches Borges, Rafael Francisco Lia Mondelli and Sergio Kiyoshi Ishikiriama

Journal of the mechanical behavior of biomedical materials, Vol.85, pp.170-174

09/01/2018

DOI: 10.1016/j.jmbbm.2018.06.001

PMID: 29902777

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Abstract

The purpose of this in vitro study was to compare the micro hardness, color stability/Delta E, 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 Al) 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 Delta E using a spectrophotometer after 24 h, 7days and after aging (24 h in water at 60 degrees 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. Delta E 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 to CTR group. DC values were similar to all groups immediately after light curing, increasing after 24 h and 7days. After 7days, only group 20B showed lower DC than CTR group. A tendency of higher DC could be observed for monolithic and thinner ceramics. All test results showed strong correlation (0.9987). Ceramic interposition can reduce mechanical and physical properties of resin cements, especially with thicker and bilayered ceramics. Group 06 M showed the best Delta E overtime.

Engineering

Materials Science

Technology

Engineering, Biomedical

Materials Science, Biomaterials

Science & Technology

Details

Title: Subtitle: Physico-mechanical properties of resin cement light cured through different ceramic spacers
Creators: Fabio Antonio Piola Rizzante - Case Western Reserve University
Paula Minatel Locatelli - Universidade de São Paulo
Thiago Soares Porto - Case Western Reserve University
Ana Flavia Sanches Borges - Universidade de São Paulo
Rafael Francisco Lia Mondelli - Universidade de São Paulo
Sergio Kiyoshi Ishikiriama - Universidade de São Paulo
Resource Type: Journal article
Publication Details: Journal of the mechanical behavior of biomedical materials, Vol.85, pp.170-174
DOI: 10.1016/j.jmbbm.2018.06.001
PMID: 29902777
NLM abbreviation: J Mech Behav Biomed Mater
ISSN: 1751-6161
eISSN: 1878-0180
Publisher: Elsevier
Number of pages: 5
Language: English
Date published: 09/01/2018
Academic Unit: Operative Dentistry
Record Identifier: 9984420838702771

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