Signs and Symptoms - Common location of dry socket: socket of an extracted mandibular third molar (wisdom tooth) - No pyrexia (fever) or cervical lymphadenitis (swollen glands) - Minimal edema (swelling) and erythema (redness) in surrounding soft tissues - Empty socket, partially or totally devoid of blood clot - Exposed bone visible or socket filled with food debris revealing exposed bone - Extremely painful and sensitive exposed bone - Surrounding inflamed soft tissues may hide dry socket - Denuded (bare) bone walls - Dull, aching, throbbing pain in socket area, may radiate to other parts of head - Pain starts 2nd to 4th day after extraction, may last 10-40 days - Strong pain that even strong analgesics don't relieve - Intraoral halitosis (oral malodor) - Bad taste in the mouth

Causes - Cause(s) of dry socket not completely understood - Blood clot forms after tooth extraction - Clot replaced by granulation tissue, fibroblasts, and endothelial cells - Factors like poor blood supply, excessive mouth rinsing, or fibrinolysis may prevent clot formation - Bacteria can colonize socket and dissolve clot - Localised inflammatory reaction in exposed bone walls - Necrotic bone slowly separated by osteoclasts, fragmentary sequestra may form - Bones of jaws have evolutionary resistance to this process - Healing is delayed, tissue grows from surrounding gingival mucosa - Some patients may develop short-term halitosis

Extraction site and Infection - Dry sockets more common in mandible than maxilla - More common in posterior sockets (molar teeth) - Inadequate socket irrigation associated with increased risk - Food debris tends to gather more in lower sockets - Dry socket more likely with pre-existing infection in mouth - Necrotizing ulcerative gingivitis or chronic periodontitis increase risk - Oral microbiota may have fibrinolytic action, predisposing individuals to dry socket - Dry socket can have secondary infection

Risk factors - Smoking and tobacco use increase risk of dry socket - Nicotine's vasoconstrictive action on blood vessels may contribute - Smoking can dislodge blood clot during healing process - Difficult tooth extraction increases risk - Vasoconstrictors in local anesthetics associated with increased risk - Radiotherapy decreases blood supply to jaw bones - Menstrual cycle may affect frequency of dry socket, higher risk in middle of cycle and in women taking oral contraceptives

Prevention, Treatment, Prognosis, Epidemiology, and Etymology Prevention: - Rinsing with chlorhexidine or placing chlorhexidine gel in the sockets reduces the frequency of dry socket. - Preventative antibiotics reduce the risk of dry socket following third molar extractions. - Antifibrinolytic agents applied to the socket after extraction may reduce the risk of dry socket. - Debriding the bony walls of the socket does not have evidence to support its effectiveness in preventing dry socket. - Dental extractions in females taking oral contraceptives should be scheduled on days without estrogen supplementation.

Treatment: - Treatment for dry socket is usually symptomatic, focusing on pain management. - Debris from the socket is removed by irrigation with saline or local anesthetic. - Medicated dressings are commonly placed in the socket to alleviate pain. - There is not enough evidence to determine the effectiveness of any specific treatments for dry socket. - Curettage of the socket may increase pain and its overall benefit is debated.

Prognosis: - Dry socket prolongs the total healing time. - Postoperative pain is worse than normal discomfort after minor surgical procedures. - The pain from dry socket may last for seven to forty days.

Epidemiology: - The rate of dry socket is about 0.5-5% for routine dental extractions. - Impacted mandibular third molars have a higher risk, with a rate of about 25-30%. - Females using oral contraceptives are more frequently affected. - Dry sockets are more common in individuals aged between 20 and 40. - Other risk factors include periodontal disease, bone diseases, and inadequate oral hygiene.

Etymology: - Alveolar refers to the alveolus, the alveolar processes of the mandible or maxilla. - Osteitis is derived from osteon, meaning bone, and -itis means inflammation. - Alveolar osteitis is considered synonymous with dry socket. - Dry socket is named because the socket appears dry after the blood clot is lost. - Other types of osteitis include focal sclerosing/condensing osteitis.