Exposed Dental Implant

Joan, a dental implant patient, asks us:

I had a dental implant placed and the sutures were removed 3 weeks ago. I have had pain in that area ever since the procedure was done.

I noticed a metal taste in my mouth about a day ago and I checked
where my dental implant was placed and the gum opened and the dental implant was
exposed. Would you know what would cause this? Should I see my dentist
at once? Thanks.