Inorganic composition and filler particles morphology of conventional and self‐adhesive resin cements by SEM/EDX

Abstract

The purpose of this study was to characterize the inorganic components and morphology of filler particles of conventional and self-adhesive, dual-curing, resin luting cements. The main components were identified by energy dispersive X-ray spectroscopy microanalysis (EDX), and filler particles were morphologically analyzed by scanning electron microscopy (SEM). Four resin cements were used in this study: two conventional resin cements (RelyX ARC/3M ESPE and Clearfil Esthetic Cement/Kuraray Medical) and two self-adhesive resin cements (RelyX Unicem/3M ESPE and Clearfil SA Luting/Kuraray Medical). The materials (n = 5) were manipulated according to manufacturers' instructions, immersed in organic solvents to eliminate the organic phase and observed under SEM/EDX. Although EDX measurements showed high amount of silicon for all cements, differences in elemental composition of materials tested were identified. RelyX ARC showed spherical and irregular particles, whereas other cements presented only irregular filler shape. In general, self-adhesive cements contained higher filler size than conventional resin luting cements. The differences in inorganic components and filler particles were observed between categories of luting material and among them. All resin cements contain silicon, however, other components varied among them.

Polymerization shrinkage and porosity profile of dual cure dental resin cements with different adhesion to dentin mechanisms

“…According to Mulltinovic‐Nikolic, Medi, and Vukovic () and Aguiar, Francescantonio, Bedran‐Russo and Marcelo (), self‐adhesive resin cements as RU incorporate in its composition acid and zinc oxide powders, or aluminum silicate glass, as well as phosphoric acid. The powder of glass ionomer cements has particles in the micrometer range, while the resin cements have nanometric particles.…”

Characterization of Morphology and Composition of Inorganic Fillers in Dental Alginates

“…Specimens were identified by using a SEM operating with a Vantage System (Noran Instruments, Middleton, WI). The spectra for EDX measurements were obtained for 100 s livetime (voltage: 15 kV; dead time 20–25%; working distance: 20 mm) [11]. …”

“…Images of the filler particles in each alginate material were obtained at 1200x magnification (voltage: 15 kV; beam width: 25–30 nm; working distance: 10–15 mm) [11]. The SEM images were imported and analyzed using an image-analysis system (ImageJ 1.41; Wayne Rasband, National of Institutes of Health, Bethesda, MD, USA).…”

Efeito da aplicação de plasma não-térmico atmosférico no reparo de cerâmicas CAD/CAM de matriz resinosa com resina composta

“…O mesmo protocolo de submersão e centrifugação foi realizado com clorofórmio 99.8% (Merck KGA, Darmstadt, Alemanha) e posteriormente com etanol absoluto (Merck KGA, Darmstadt, Alemanha). As partículas foram então armazenadas em etanol absoluto por 24h, em uma estufa (FANEM, São Paulo, SP, Brasil) a 37 o C 43 . Finalmente, as partículas foram aplicadas em uma fita de carbono, aderida a um stub metálico, e submetidas à cobertura com ouro e análise em MEV, conforme descrito anteriormente.…”