In vitro microhardness of glass ionomer cements.
This study evaluated the surface microhardness of four glass ionomer cements and a composite resin (Fuji IX, Ketac Molar, Vidrion R, Vitromolar and Z 250). Ten specimens of each glass ionomer cement with 8.0 mm diameter and 5.0 mm high dimensions were made and Vicker's microhardness measurements were taken at 1 day and 1 week after initial setting reaction. The results were analyzed using Student's T test and Tukey test (p < 0.05) and demonstrated that the values of microhardness increased after 1 week, with the exception of Fuji IX. Resin composite Z250 presented the greatest values for microhardness.
Silva
R C
RC
Department of Pediatric Dentistry and Orthodontic, Araraquara Dental School, University of São Paulo State, UNESP, São Paulo, Brazil.
Zuanon
A C C
AC
Esberard
R R
RR
Candido
M S M
MS
Machado
J S
JS
D003188:Composite Resins / Q000737:chemistry*; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006244:Hardness; D006245:Hardness Tests; D066298:In Vitro Techniques; D008420:Manufactured Materials; D013997:Time Factors
D003188:Composite Resins; D005899:Glass Ionomer Cements