How can I determine what original material was used for my chin implant? Medpore or Gore-Tex?

Hello, I had a chin implant placed in 2005. Occasionally, I feel some discomfort in the area. Unfortunately, as a long time has passed since the surgery, I am not able to obtain medical records and the surgeon cannot tell me whether medpor or gore-tex was used as he was using both materials for chin implants at that time. Is there any way to tell? Is this something that would be apparent if x-rayed or would it need to be seen in person (would it even be apparent then)? Thank you!