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.
Symptoms of a dry socket include a throbbing steady pain that presents a few days after a tooth extraction. The pain may radiate to other parts of the head such as the ears and eyes on the same side of the face.