Correlation between mechanical properties and stabilization time of chemical bonds in glass-ionomer cements
Braz. oral res. (Online)
;
34: e053, 2020. tab, graf
Article
in English
| 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.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Self-Curing of Dental Resins
/
Glass Ionomer Cements
Type of study:
Evaluation studies
/
Prognostic study
Language:
English
Journal:
Braz. oral res. (Online)
Journal subject:
Dentistry
Year:
2020
Type:
Article
Affiliation country:
Brazil
/
United kingdom
Institution/Affiliation country:
Queen Mary University of London/GB
/
Universidade Estadual de Maringá/BR
/
Universidade Paulista/BR
/
Universidade de São Paulo/BR
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