Question

Mechanical properties of glass ionomer cement

Answer 1

Answer:

$<font color= "blue">$Hey mate answer of your question is given below by me..

Explanation:

The setting reaction of glass ionomer cement was studied by analyzing and comparing the short-tem mechanical properties of set cement stored in silicone oil, air and distilled water respectively at different temperatures. For the set cement stored at 37 °C, the strength of the sample in the air reached the maximum value after 24 h, then decreased to about 210 MPa and kept steady. The strength of the sample in water increased continuously and slowly, however, the increasing rate of sample stored in silicone oil was higher than that in the water. At 20 °C, the increasing rate of compressive strength for sample in air was higher than those in silicone oil and water. The diffusion speed and maintenance of water has significant effects on the mechanical properties of glass ionomer cements.

I hope it can help you..

Please mark as brainlist

Answer 2

Answer:

Hey mate answer of your question is given below by me .

Explanation:

Background: This study evaluated mechanical properties of glass ionomer cements (GICs) used for atraumatic restorative treatment. Wear resistance, Knoop hardness (Kh), flexural (Fs) and compressive strength (Cs) were evaluated. The GICs used were Riva Self Cure (RVA), Fuji IX (FIX), Hi Dense (HD), Vitro Molar (VM), Maxxion R (MXR) and Ketac Molar Easymix (KME).Methods: Wear was evaluated after 1, 4, 63 and 365 days. Two‐way ANOVA and Tukey post hoc tests (P = 0.05) analysed differences in wear of the GICs and the time effect. Fs, Cs, and Kh were analysed with one‐way ANOVA.Results: The type of cement (p < 0.001) and the time (p < 0.001) had a significant effect on wear. In early‐term wear and Kh, KME and FIX presented the best performance. In long‐term wear, F s and Cs, KME, FIX and HD had the best performance. Strong explanatory power between Fs and the Kh (r2 = 0.85), Cs and the Kh (r2 = 0.82), long‐term wear and Fs of 24 h (r2 = 0.79) were observed.Conclusions: The data suggested that KME and FIX presented the best in vitro performance. HD showed good results except for early‐term wear.

I hope it can help you.