Microhardness of glass ionomer cements indicated for the ART technique according to surface protection treatment and storage time
| Autor: | Rebeca Di Nicoló, Luciana Keiko Shintome, Marcos Paulo Nagayassu, Silvio Issáo Myaki |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Time Factors surface property Varnish Surface Properties Cavity Drug Storage Glass ionomer cement Magic Glass Materials testing chemistry Indentation hardness glass ionomer Varnish cavity Materials Testing General Materials Science Hardness Tests Composite material time instrumentation Analysis of Variance atraumatic restorative treatment Dental Atraumatic Restorative Treatment Dental Cavity Lining methodology hardness dental surgery lcsh:RK1-715 Distilled water Glass Ionomer Cements visual_art lcsh:Dentistry Hardness tests visual_art.visual_art_medium Nuclear chemistry |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Brazilian Oral Research v.23 n.4 2009 Brazilian Oral Research Sociedade Brasileira de Pesquisa Odontológica (SBPqO) instacron:SBPQO Brazilian Oral Research, Volume: 23, Issue: 4, Pages: 439-445, Published: DEC 2009 Brazilian Oral Research, Vol 23, Iss 4, Pp 439-445 (2009) |
| Popis: | Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:23:59Z No. of bitstreams: 0Bitstream added on 2014-05-27T14:35:32Z : No. of bitstreams: 1 2-s2.0-77953721359.pdf: 169029 bytes, checksum: 35d22b1a7c9ba1c82dde64b54bdc57c4 (MD5) Made available in DSpace on 2014-05-27T11:23:59Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-10-01 The aim of this study was to assess the microhardness of 5 glass ionomer cements (GIC) - Vidrion R (V, SS White), Fuji IX (F, GC Corp.), Magic Glass ART (MG, Vigodent), Maxxion R (MR, FGM) and ChemFlex (CF, Dentsply) - in the presence or absence of a surface protection treatment, and after different storage periods. For each GIC, 36 test specimens were made, divided into 3 groups according to the surface protection treatment applied - no protection, varnish or nail varnish. The specimens were stored in distilled water for 24 h, 7 and 30 days and the microhardness tests were performed at these times. The data obtained were submitted to the ANOVA for repeated measures and Tukey tests (α = 5%). The results revealed that the mean microhardness values of the GICs were, in decreasing order, as follows: F > CF = MR > MG > V; that surface protection was significant for MR, at 24 h, without protection (64.2 ± 3.6a), protected with GIC varnish (59.6 ± 3.4b) and protected with nail varnish (62.7 ± 2.8ab); for F, at 7 days, without protection (97.8 ± 3.7ab), protected with varnish (95.9 ± 3.2b) and protected with nail varnish (100.8 ± 3.4a); and at 30 days, for F, without protection (98.8 ± 2.6b), protected with varnish (103.3 ± 4.4a) and protected with nail varnish (101 ± 4.1ab) and, for V, without protection (46 ± 1.3b), protected with varnish (49.6 ± 1.7ab) and protected with nail varnish (51.1 ± 2.6a). The increase in storage time produced an increase in microhardness. It was concluded that the different GICs, surface protection treatments and storage times could alter the microhardness values. Department of Restorative Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP Department of Pediatric Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP Department of Restorative Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP Department of Pediatric Dentistry School of Dentistry of São José dos Campos São Paulo State University (UNESP), São José dos Campos, SP |
| Databáze: | OpenAIRE |
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