Which decalcification method uses electrical current to remove mineral content?

• A. Chemical Acid
• B. Von Ebner's
• C. Electrolytic Method
• D. Radiologic Method

Answer: (C)

The key idea is how decalcification methods remove mineral from hard tissues. The method that uses electrical current does so by placing the specimen in an electrolyte and applying a direct current. The electric field drives mineral ions, mainly calcium, out of the tissue and into the surrounding solution, so the bone or calcified tissue becomes decalcified without relying solely on acids. This can speed up decalcification and, when controlled, helps preserve tissue morphology and staining properties better than strong acid methods. If the current is too intense or used too long, heat and over‑decalcification can damage the tissue. So, the use of electrical current distinguishes this method from chemical acid decalcification and other approaches.