Prolonged Bleeding from the Extraction Site
Incidence: 0.6 - 5% with higher incidence in older age groups.

Most patients with a bleeding disorders are diagnosed early in life and their
medical history is available to the oral surgeon.  Nevertheless, cases are still
occasionally diagnosed for the first time following dental extraction.

The majority of patients who bleed after extractions do not have any underlying
hæmatological disorder and they generally have had extractions previously without
complication, suggesting a purely local factor in the

Pre-operative screening of patients with no relevant history for blood-clotting
disorders is not an effective means of identifying patients who may bleed

There exists a small group of patients who bleed after dental extractions on each
occasion but do not bleed after extra-oral trauma and do not show any abnormality
on hæmatologic testing.  It has been suggested that
oral fibrinolysis, probably of
salivary origin, may be responsible for destruction /
lysis of the blood clots and
consequent hæmorrhage in such patients.  
Fibrin-stabilising factors, such as ε-
aminocaproic acid
and transexamic acid may be helpful in these cases.
Last Updated 11th August 2010