STUDY REGARDING THE BEHAVIOUR OF CERTAIN DIRECT DIACRYLIC COMPOSITE RESINS TO ELECTROCHEMICAL CORROSION IN AFNOR ARTIFICIAL SALIVA

Irina Grădinaru, Raluca-Elena Baciu, Ramona Cimpoeșu, Diana Toma, Maria Baciu

Abstract:

Currently the most frequently class of materials used in the dental office for the remake of coronary morphofunctionality is that of diacrylic-composite resins. This study aimed at highlighting the behaviour of certain direct diacrylic composite resins having a different polymerization type of matrix monomers to electrochemical corrosion in artificial saliva. The specimens made of Charisma, Charisma PPF-Heraeus-Kulzer were immersed in Afnor solution for a period of 40 days and analysed by electronic microscopy and EDS chemical analysis. The results of the study show that following the process of electrochemical corrosion on both materials under study, we may notice a decrease of the percentage of carbon, silica and zirconium simultaneously with the increase of the oxygen percentage and the formation of new sodium and chlorine-based chemical compounds

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