It is good that you tell your dentist that did the bone regeneration on the discomfort that you are feeling in the area where the implant was removed. I think that by taking a periapical radiograph the doctor could rule out a possibility of infection.
When you get bone grafting, it is normal for the dentist placing the bone graft to overfill the site with the granules with the expectation that some will come out. I usually tell my patients not to worry if they feel some of the grains come out because I overstuff it to make sure that it...