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.
Dry Socket. Dry socket is a painful inflammation that can develop in the open tooth socket of the jawbone after a tooth has been removed (extracted). Dry sockets often develop after an extraction and are more common after extraction of third molars (wisdom teeth). Dry socket develops when the blood clot at the site of surgery disintegrates or is dislodged. This condition can cause severe pain extending up to the ear. The socket may smell bad.