It ranges from 1-4% of extractions and 41% of mandibular third molar extractions.4 It occurs due to the disintegration of the blood clot by fibrino- lysis and is commonly observed in patients 40 to 45 years old.56 Many factors contribute to the occurrence of dry socket e.g.
1999 Not assessed Schwartz 2001 S[O.sub.2] was positively associated with white cell counts, and N[O.sub.2] with platelet counts and fibrino- gen, but both gases were confounded by P[M.sub.10] Pekkanen et al.