Electrochemical properties of NiTi samples in simulated root canal environments: insights from OCP and PCV analysis (an in-vitro study) running head: electrochemical properties of NiTi samples: OCP and PCV analysis

Introduction: This study investigates the electrochemical dissolution properties of Nickel-Titanium (NiTi). The focus is on electrochemical parameters, including Open Circuit Potential (OCP) and Polarization Curve Voltammetry (PCV), as well as weight loss, to understand their dissolution behavior and optimize file removal techniques in clinical practice. Materials and Methods: NiTi samples were immersed in two different electrolyte solutions. Electrochemical tests (OCP and PCV) were conducted to assess the dissolution tendencies, while weight loss was measured as an indicator of material degradation. Microscopic analysis (optical microscopy, SEM, and EDX EDS) was used to examine surface morphology and corrosion products. Results: The OCP and PCV tests revealed differences in electrochemical behavior, influencing the extent of dissolution. Microscopic examination showed surface degradation and corrosion for both materials. Conclusion: The electrochemical dissolution properties of NiTi are influenced by their material composition and the electrolyte solutions. These findings offer valuable insights for enhancing fractured instrument retrieval techniques in endodontics, underscoring the importance of material selection and electrolyte composition.