Abstract

AVELINO, Elizabeth Luiza Linhares da Cunha et al. Comparison of compressive strength between encapsulated glass ionomer cement and powder/liquid cement system. RFO UPF [online]. 2016, vol.21, n.2, pp. 191-195. ISSN 1413-4012.

Objective: This study aimed to compare the compressive strength between encapsulated glass ionomer cements (GIC) (Riva self-cure™ and Riva light cureTM) and their corresponding powder-liquid cement system (Riva self-cure™ and Riva light cureTM). Materials and method: For the compressive strength test, twelve specimens were produced for each group in stainless steel matrixes, with 4.0 ± 0.1 mm of diameter and 6.0 ± 0.1 mm of height. The tests were conducted in Shimadzu™ universal testing machine at displacement speed of 1.0 mm/min. After analysis, data were submitted to twoway ANOVA and Tamhane post-test. Results: There was a statistically significant difference (p<0.05) only for encapsulated GIC. Mean compressive strength in absolute values was 126.07 MPa for light-cured encapsulated GIC, 118.34 MPa for light-cured powder-liquid cement, 95.87 MPa for self-curing encapsulated cement, and 122.07 MPa for self-curing powder-liquid cement. Conclusion: The encapsulated GIC does not present higher values of compressive strength when compared to the powder/liquid system.

Keywords : Glass ionomer cements.; Compressive strength.; Dental materials..