My implant abutment and crown came off, would I need to get a new abutment and crown?

I got a Nobel Active 5.0 implant done overseas about 5 weeks ago, the crown got stuck when test fitting before the dentist could cement the crown on and dentist didn't want to pull on crown since implant is fresh. I came back to the state and it's about a 5 weeks into it now and the implant and abutment just came off. The gums seem to be healing over the hole where the abutment was. would i have to get a new abutment and crown to get them replaced or could they use the same ones that came off ?