In vitro evaluation of chemical exchange between restoration of glass ionomer cement and demineralized primary dentin with application of sodium fluoride to 2%

Autor: Dias, Gisele Fernandes
Přispěvatelé: Wambier, Denise Stadler, Santos, Fábio André dos, Menezes, José Vitor Nogara Borges de, Reis, Alessandra
Jazyk: portugalština
Rok vydání: 2014
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UEPG
Universidade Estadual de Ponta Grossa (UEPG)
instacron:UEPG
Popis: Made available in DSpace on 2017-07-24T19:22:32Z (GMT). No. of bitstreams: 1 Gisele Fernandes Dias.pdf: 2667263 bytes, checksum: 2db5a82c2383c33af28977b31471c035 (MD5) Previous issue date: 2014-02-19 This in vitro study evaluated the effect of pretreatment action of a neutral solution of sodium fluoride (NaF) 2% and a glass ionomer cement (GIC) of high viscosity (Ketac Molar Easymix ®) in primary sound dentin and demineralised dentin, with Knoop hardness test, Energy Dispersive Spectroscopy (EDS) and micro-Raman. In 40 primary molars class I cavities were created, these teeth being divided into groups 1 and 2 (pH cycling) and groups A and B (NaF). After pH cycling (n = 20) the cavity half was isolated with nail varnish, obtaining two sites, one in direct contact with the GIC and other control. The cavities of 20 teeth (G1B, G2B) received topical fluoride application before restoring. The G1A, G1B, G2A and G2B groups were formed. The restored teeth were sliced (n=3) in mesiodistally for testing the hardness and mineral exchange. The hardness data were analyzed using paired t-test, and the contact areas (C) and non-contact (SC) and ANOVA 2 criteria considering factors dentin (sound and demineralised), treatment (with and without fluoride) and interaction (and treating dentin). The level of significance used was 5% (α = 0.05). The data EDS and micro-Raman spectra were analyzed qualitatively by groups. Significant difference was found between the Knoop hardness factor for dentin (sound and demineralised) and in the contact area of the restorative material (p
Databáze: OpenAIRE
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