This occurs in less than 1 in a 100 cases but when it happens is very distressing for the patient. Extrusion often follows a hematoma or collection of blood. If the hematoma becomes infected, extrusion is more likely.
Most surgeons recommend an antibiotic around the time of surgery.
To reduce the risk of extrusion it is important that the wound is closed without tension and that there is no bleeding. The surgeon must select the appropriate sized implant and make a large enough pocket. The size of the pocket is crucial. Extrusion may be more common when the operation is performed though the mouth. After surgery the patient must be careful to avoid injury to the site of surgery.