Yes sometimes the implant fails and it may have to be removed cause keeping it may cause more bone loss. The reasons may be varied like inadequate bone preoperatively, systemic conditions of the patient, infection post implant placement etc. you may not need to take an X-ray if the implant is mobile and there is absolutely no stability even after 7 months.
Next Steps
Consult another doctor if your not satisfied with your present doctor who is a specialist in implants preferably a prosthodontist.
Health Tips
You can take a detailed explanation about the future treatment planning , discuss with our dental care online and then take a call whether you wish to continue with the same doctor .
Dr Akshita Jain Punamiya
MDS