Molar pulled 4 days ago dentist checked for infection cleaned area it was healing fine. after the clean later i see bone no more scab. dry socket?

Happens in 2to5%case: Only a small percentage about2to5% people develop dry socket after a tooth extraction.It can cause discomfort;can be easily treated.It is because the blood clot has become dislodged or got dissolved.That leaves the bone and nerve exposed to air, food;fluid.This can lead to infection consult your dentist as he/she will clean the area and fill the socket with medicated dressing, pain meds and antibiot.

Possible: If the socket was cleaned four day after the extraction, blood clot might've gotten dislodged causing the dry socket, or the presence of infection during extraction might prevent the blood clot from forming , see your dentist to treat the dry socket ..