People are saying they no longer have implants but this is not true. Allot of the older implants are considered radiopaque which are the bright white objects shown in x-rays. The new tech they are using on us are considered radiolucent they will not show up in a x-ray. Radiolucent materials are generally polymer based plastics or carbon-fiber composites. I believe some of the implants have radiopaque components with a radiolucent coating thats black. The color black is radiolucent . I believe the material is either silicon based or protein based and is similar to the radar resistant coating on the stealth bomber. Allot of the forgien implants found from people like Katherine Horton or Roger Lier have a black coating on them.
Katherine Horton’s video of Melanie talks about the black coating.
Radiolucent = Are objects that are almost entirely transparent to radiation; almost entirely invisible in x-ray photographs and underfluoroscopy. 
Radiopaque = Opaque to radiation; visible in x-ray photographs and under fluoroscopy.