Effect of lactic acid with different pH values on the microstructure of Biodentine

Abstract

This study was conducted to evaluate the effect of lactic acid with different pH values on surface topography and mineral content (concerning calcium and silica) of Biodetine and compared with Conventional glass ionomer cement. Eighty specimens were prepared throughout the whole study. They were divided into two main groups according to the material type into Biodentine™ and CGIC (40 each). Each main group was further sub divided into four subgroups, 10 each, according to immersion media (distilled water at pH 7.4, Lactic acid at pH 5.4, 4.4 and 2.4 respectively) for 7 days. Then, the specimens were removed from different pH solutions, they were rinsed using deionized water and gently tapped dry with absorbent paper and assessed using Energy Dispersive X-ray spectroscopy to identify the calcium and silica weight percent. Furthermore, specimens surface morphology was assessed using Scan Electron Microscope.