Correlation between mechanical properties and stabilization time of chemical bonds in glass-ionomer cements
Braz. oral res. (Online)
;
34: e053, 2020. tab, graf
Artículo
en Inglés
| LILACS, BBO
| ID: biblio-1132666
ABSTRACT
Abstract The objective was to evaluate the compressive strength (CS), diametral tensile strength (DTS), flexural strength (FS), and Knoop microhardness (KH) of different conventional restorative glass-ionomer cements (GICs) and to correlate these mechanical properties (MP) with the stabilization time (ST) of their chemical bonds. Eighteen GICs were tested Bioglass [B], Chemfil Rock [CR], Equia Forte [EF], Gold Label 2 [GL2], Gold Label 9 [GL9], Glass Ionomer Cement II [GI], Ionglass [IG], Ion Z[ IZ], Ionomaster [IM], Ionofil Plus [IP], Ionostar Plus [IS], Ketac Molar Easymix [KM], Magic Glass [MG], Maxxion R [Ma], Riva Self Cure [R], Vidrion R [V], Vitro Fil [VF] and Vitro Molar [VM]. The mechanical strength tests were performed in a universal testing machine. KH readings were done with a diamond indenter. STs were examined by Fourier Transform Infrared spectroscopy (FTIR). Data were analyzed with ANOVA and Tukey test (p<0.05). The Spearman rank test was used to evaluate the dependence between the MPs and ST results. The highest MP values were EF, GL2, GL9, GI and KM and the lowest for MG, MA, B, VF and IM. The longest ST was for GL2 and the shortest was for B. ST correlated positively with MP. GICs with longer chemical bonds ST are generally stronger and the ST value obtained from FTIR was useful in predicting the strength of GICs tested.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Auto-Curación de Resinas Dentales
/
Cementos de Ionómero Vítreo
Tipo de estudio:
Estudios de evaluación
/
Estudio pronóstico
Idioma:
Inglés
Revista:
Braz. oral res. (Online)
Asunto de la revista:
Odontología
Año:
2020
Tipo del documento:
Artículo
País de afiliación:
Brasil
/
Reino Unido
Institución/País de afiliación:
Queen Mary University of London/GB
/
Universidade Estadual de Maringá/BR
/
Universidade Paulista/BR
/
Universidade de São Paulo/BR
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