Ursus (genus) Ursus is a genus in the family Ursidae (bears) that includes the widely distributed brown bears, the polar bear, and black bears. The name is derived from the Latin ursus, meaning bear. Species and subspecies of Ursus.
A dry socket is caused by the partial or total loss of a blood clot in the tooth socket after a tooth extraction. Normally, after a tooth is extracted, a blood clot will form as the first step in healing to cover and protect the underlying jawbone. If the blood clot is lost or does not form, the bone is exposed and healing is delayed. In general, a dry socket is a result of bacterial, chemical, mechanical, and physiologic factors.
A dry socket occurs when the blood clot breaks down or is dislodged, exposing the bone and nerves. The first five or so days after extraction are the most critical, and it is during this time that the risk for a dry socket is the highest. A dry socket can be very painful! If you think you have this condition, contact your dentist immediately.