What is Dry Socket: A Comprehensive Exploration

Dry socket is one of the complications that occur after tooth extraction. A dry socket in the literature is also known as ‘fibrinolytic alveolitis’ or ‘focal alveolar osteitis’ there is delayed healing in the dry socket due to the fibrinolytic activity within the tooth extraction socket. This fibrinolytic activity results in intense pain and exposure of the alveolar bone due to the non-healing of the socket.

Signs and Symptoms of Dry Socket

The following signs and symptoms are indicative that the patient is suffering from a dry socket.

• In a dry socket, the postsurgical pain increases on the third to the fifth day after tooth removal.
• The pain intensity in a dry socket is moderate to severe that has throbbing nature and pain is not relieved by the medications (analgesics and antibiotics).
• The pain of the dry socket is localized but occasionally pain radiates to the auricular region. There is no swelling or signs of infection such as swelling, fever, and redness.
• There is some degree of trismus but it is usually a result of surgical trauma during dental extraction and not as a result of dry socket.
• The intra-oral clinical examination demonstrates that the extraction socket is empty with complete or partial loss of blood clot. The bone of the alveolar socket is sometimes partially visible because of the loss of blood clot.
• The area of the tooth extraction socket has a bad smell filled with debris and the patient also complains about bad taste.

 Associated Risk factors for Dry Socket

The cause of alveolar osteitis or dry socket is not fully understood. The dry socket occurs in 1-3% of all dental extractions. The incidence of dry socket is associated with several local and systemic factors such as

• Tooth extraction during active infection.
• Extraction of the mandibular teeth especially mandibular molars.
• Wisdom tooth extraction especially mandibular third molars that are surgically extracted.
• History of traumatic extraction in which there is the removal of bone and trauma to soft tissues.
• Cancer patients who have undergone radiotherapy recently.
• Female patients currently on oral contraceptives.
• Tobacco consumers who are using any form of tobacco like cigarettes, smokeless tobacco, and Electronic cigarettes.
• History of soft tissue inflammation around partially erupted or impacted wisdom teeth.
• History vigorous rinsing post-extraction or not followed post-extraction instructions properly.
• Poor oral hygiene maintenance.
• Active Periodontal diseases such as periodontitis or acute necrotizing ulcerative gingivitis.
• Local bone diseases or sclerosis such as Paget’s disease, cemento-osseous dysplasia, and osteopetrosis which reduces the blood supply required for the formation of a blood clot.
• Excessive use of local anesthesia the vasoconstrictor in the local anesthesia prevents the formation of a blood clot.
• Patients with a previous history of dry socket are also at high risk of developing dry socket after tooth extraction in the future.

Dry socket is usually diagnosed with a history of pain and clinical examination only and usually, no investigations such as x-rays are required unless retained root fragments or fracture of the alveolar bone is suspected. 

Treatment of Dry Socket

The management of the patient presenting with the dry socket is straight forward and consists of the following steps. The home remedies for dry socket treatment should be avoided and the patient should consult the operating dentist or any qualified dental practitioner for management of dry socket.  

1. Reassure the patient that this is not a serious condition or complication of tooth extraction and the pain is not due to the extraction of the wrong tooth or due to remnants or roots of a tooth. The pain and the resulting discomfort will subside within a few hours and the socket will completely heal in the next few weeks.
2. Irrigate the extraction socket under gentle pressure with the help of a sterile syringe under local anesthesia. The best choice for irrigation is sterile normal saline or with a chlorohexidine solution (0.12%). The excessive irrigation solution should be removed with gentle suction.
3. The extraction socket should not be curetted as it will further escalate the pain and will cause discomfort to the patient. Gently remove the debris that is not removed after the irrigation of the socket.
4. After removal of excess irrigation solution and removal of debris, the medicated dressing should be placed but not pushed inside the socket as packing of the socket with medicated dressing may further delay the healing process.
5. The medicated dressings placed as part of the treatment of dry socket usually consists of the following ingredients: Eugenol, topical anesthetic such as benzocaine and a carrying vehicle. The medicated dressings are commercially available with different brand names such as Alvogyl. The patient usually feels better within ten minutes after the placement of the medicated dressing.
6. The majority of the patients feel pain relief only with one dressing and very few of them require multiple follow up appointments and dressings. The frequent changing of medicated dressings may also delay healing of the extraction socket and therefore unnecessary follow-up appointments must be avoided.  The tooth extraction site will heal normally but slower than usual within a week.
7. Antibiotics are not suggested as part of the management of dry socket. However, the non-steroidal anti-inflammatory drugs (analgesics) can be prescribed but with the local measures that are described earlier.

Prevention of Dry Socket

The incidence or likelihood of dry socket can be minimized by adhering to the following general guidelines. 

1. Use of surgical techniques that cause minimal trauma to the tissues such as atraumatic dental surgery with clean soft tissue incisions.
2. The optimal level of sterilization of the dental instruments and the implementation of strict infection control measures during dental extraction.
3. Ask the patient to rinse the oral cavity with Chlorhexidine or another oral antiseptic agent before dental extraction.
4. Strict adherence to the post-extraction instructions or guidelines.
5. Maintaining proper oral hygiene.
6. Abstaining from smoking and any form of tobacco.

If the pain of dry socket fails to resolve after several follow up appointments. It may indicative of some other conditions that are needed to be addressed such as small bone sequestra that are left after tooth extraction, retained tooth or root fragments, osteomyelitis, pre-existing pathology in the adjacent tooth, surgical trauma or damage to the adjacent tooth during dental extraction, dislocation of the mandible, fractured bone and osteonecrosis.