Exodontia Complications: Dry Socket, Fracture, Displacement

Exodontia is the surgical removal of teeth, and although most extractions heal uneventfully, well-known complications can follow: dry socket (alveolar osteitis), fracture of the tooth root or jaw, displacement of a root into the maxillary sinus, nerve injuries, and prolonged bleeding. Each has a classic timing, classic signs and a standard management, which examiners and clinicians expect you to know cold.

Complications are where a routine extraction becomes a crisis: a dry socket causes some of the worst pain in dentistry, a displaced root can seed a sinus infection, and a fractured mandible needs hospital care. Knowing prevention, early recognition and step-by-step management protects the patient, and it is core BDS oral-surgery curriculum.

Key Concepts

• Dry socket (alveolar osteitis): clot loss 3-5 days after extraction, leaving bare bone; severe throbbing pain radiating to the ear, foul taste, empty socket. Commoner in mandibular molars, smokers and traumatic extractions.
• Root fracture: tip fractures are common with curved roots; apical fragments under 3 mm, if uninfected, may be left; larger ones need surgical retrieval.
• Tuberosity fracture: the maxillary tuberosity can break with upper molars; stop, stabilise, refer if large.
• Displacement into the sinus: upper molar roots pushed through the sinus floor need retrieval (Caldwell-Luc or endoscopic); always check for oroantral communication.
• Nerve injuries: inferior alveolar (lip/chin numbness) and lingual (tongue numbness) nerves in lower third-molar surgery; mostly neuropraxia recovering in weeks.
• Bleeding: local measures first: pressure pack, suturing, tranexamic acid, gelatin sponge. Suspect coagulopathy only if it persists.

How It Works

1. Confirm a dry socket: severe pain from day 3-5, empty socket with exposed bone, no swelling or pus (that would be infection).
2. Anaesthetise, then gently irrigate with warm saline to remove debris.
3. Place a sedative dressing (iodoform or Alvogyl paste on gauze); avoid aggressive curettage, which cannot regrow the clot.
4. Prescribe analgesics (ibuprofen plus paracetamol); antibiotics are not routine for a clean dry socket.
5. Review in 2-3 days; change the dressing until granulation covers the bone (usually 7-10 days).
6. Counsel: no smoking, no vigorous rinsing for 24 hours after future extractions.

Worked Example

A 60 kg patient needs surgical extraction using 2% lidocaine with 1:100,000 adrenaline. Check the safe dose.

1. Maximum dose of lidocaine with adrenaline: 4.4 mg/kg (conservative figure).
2. Maximum dose = 4.4 x 60 = 264 mg.
3. 2% lidocaine = 20 mg/mL, so maximum volume = 264/20 = 13.2 mL.
4. One cartridge = 1.8 mL (36 mg); 13.2/1.8 = 7.3 cartridges, so up to 7 cartridges are safe for this patient. Exceeding this risks systemic toxicity, from CNS excitation to cardiac depression.

Common Misconceptions

• Dry socket is an infection needing antibiotics. It is a clot-loss problem, not bacterial infection; irrigation, dressing and analgesia are the treatment.
• A fractured root tip must always come out. A tiny (under 3 mm), deep, uninfected apical fragment can stay to avoid nerve or sinus damage; document and follow up.
• Post-extraction bleeding means a clotting disorder. Most is local oozing; firm pressure for 30-45 minutes with gauze stops it, and systemic causes are the exception.

Real-World Applications

• Oral surgery: extraction clinics manage these complications daily.
• Emergency dentistry: dry socket and bleeding are common after-hours presentations.
• Implantology: socket preservation builds on the same principles.
• BDS exams: a favourite long-answer and viva topic.

Exodontia complications are predictable, recognisable and manageable: dry socket gets irrigation and a sedative dressing, fractured roots are judged by size, displaced roots get retrieved, and every dose stays inside the weight-based ceiling. Prevent the clot loss, respect the anatomy, and most extractions stay boring in the best way.