Implant too deep in my lower jaw?

I am a patient, but I didnt have a place to ask anyone credible, so I thought I'd post here. I had this implant placed about 3 years ago. Maybe because I lacked bone the dr placed it deeply. The Dr isnt very responsive to me. Is this placement ok? Its placed very deep in the jaw is it safe ? Is it even more stable than a regular implant? Or is it worse? Thanks.