It may be small bits of bone which were left in the socket. It may push itself out eventually. There's no need for treatment unless its hurting you. The other scenario I imagine is that its the ridge of your jaw bone and its a
littleLittle noses decongestant
Little tummys sharp. Your dentist could go in there and smooth out the bone. But if its not hurting, you can wait for the bone to remodel but it may take a few months.