I spoke by email to @igloo yesterday. For clarification, the “tooth” in question is a restored implant that is failing and must be removed. She sent the X-rays and it is very obvious. It was beginning to lose bone in January; the current X-ray shows major loss. The tooth behind may or may not need to be removed, depending on healing after removal of the implant and the surgeon’s decision.
The remaining threads of the implant are still anchored in the bone so it is not loose. It may or may not bleed. He is pushing with the perio probe to determine the depth of bone loss. The tissue still has nerves, that’s why it hurts. When the bone loss gets all around the implant, it will feel loose and hurt when you chew.
This does not need a second opinion (though you may certainly get one if you want). Implants are not 100% successful. With a failed implant, you are best treated with an oral surgeon to remove, graft, and place a new screw. Your personal dentist can restore the implant.