The electrical discharge method, also called electrical discharge machining or spark erosion, is a process used in dentistry to obtain the best passive fit of dental implants, removable dental prosthetics, and titanium/ceramic crowns. During electrical discharge machining (EDM), the desired shape of metal is achieved by using erosion created by an electric current. The current is precisely controlled via two conductive objects placed inside a liquid medium. Essentially, two types of electrical discharge machining exist — a wire type and a probe type, the latter of which is primarily used in the field of restorative dentistry. EDM increases how long a dental restoration lasts and removes the need for traditional soldering techniques. Fitting restorations using the electrical discharge method can be expensive for the patient, but the results are longer lasting than many other restorative procedures. EDM is also used in die making, prototype parts, stamping tools, and even aerospace components.