Is it possible for a bone graft to cause an infection behind the ear?

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. 

All placed bone graft can not be pressed by the Provisional tooth, if pressed it can decrease the expected result

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...

I advise you to go to your dentist to evaluate the area where the graft was performed and take x-rays of the area to rule out an infection. 

Hi. While there is no pain or inflammation you should have no problem, you probably had something common called dry socket, that's why the cleaning inside the alveolus. but everything looks normal in that photo. If you have any other symptom you can go with your dentist, but remember that as...

It is normal to feel discomfort after dental surgery where the mucosa is exposed because the patient tends to become more inflamed, and the post surgical is slower. When there is regeneration, healing tends to be slower. I recommend that you only use the denture when necessary until the...