question: Is Doxycycline (3 x 100mg oral, daily) safe for use in patients with dental implants? After taking this drug for 10 days my gums hurt a bit and it seems like the bottom of the implants are changing color, becoming more transparent with what looks like visible scars. I am very confused and worried if the Doxycycline is causing it but I thought the implant materials couldn't be affected in this way.