Resumo

PEDRO HENRIQUE CABRAL, Oliveira et al. Radiodensity assessment of conventional and resin-modified glass ionomers. RFO UPF [online]. 2013, vol.18, n.2, pp. 170-174. ISSN 1413-4012.

Objective: glass ionomers (GIs) must have enough radiodensity to be distinguished from secondary caries and restorations. Thus, this study aimed to compare the radiodensity of 11 conventional (CO) and resin-modified (RM) GIs, with an aluminum scale as parameter. Materials and method: Twelve specimens from each group (n=12) were made with a silicone matrix and additional 1 mm in thickness. The RMGIs were photoactivated with LED. An aluminum scale and the randomized specimens were positioned on periapical radiographic films and exposed to 60 kV X-rays, 10 mA for 0.7s, and a 10 cm focus film distance. After film development two calibrated examiners qualitatively assessed radiodensity. Results: data were analyzed by the Kruskal Wallis test (p < 0.05), and the Dunn test. The medians (minimum- maximum) were Ionomaster™ (Wilcos-CO): 1(1- 1)A; Resiglass™ (Biodynamic-RM): 1(1-2)AB; Maxxion R™ (FGM-CO): 1(1-4)AB; Vidrion R™ (SS White-CO): 1(1-5)AB; Vitremer™ (3M ESPE-RM): 2(1-4)ABCD; Ionoseal ™ (Voco-RM) 3(1-3)ABCD; Vitrofil™ (DFL-CO): 3.5(1-4)BCD; Ketac Fil™ (3M ESPE-CO): 2.5(1-4)CD; Riva light Cure™ (SDI-RM): 4(1-4)CD; Riva Self Cure™ (SDI-CO): 3(3-4)CD; Chemfil Rock™ (Dentsply Caulk- -CO): 3.5(2-4)D. Conclusion: the tested glass ionomers presented adequate radiodensity.

Palavras-chave : Glass Ionomer Cements.; Dental Cements.; Radiography.; X-Rays..