Hello and thank you for your question.
I would hold off on smoking
a cigarette for at least two weeks from the time of the extraction. As a health care provider I would encourage you to quit smoking before the time of the appointment to help reduce the risk of post operative complications, and to remain that way.
Your body heals by forming a blood clot which is a matrix for the healing tissue and bone to form on. Cigarettes affect this in many ways, the suction you form on the cigarette itself can pull the clot from the socket and cause dry socket
. The smoke is hot and irritating which can cause pain, delayed healing and also dry socket. The chemicals in cigarettes causes vasoconstriction
, since the mouth heals through microvasculature, vasoconstriction can cut blood supply to the healing site and delay the healing or even cause failure of the clot from progressively healing leading to once again: dry socket. I have to disagree with Dr. Rajinder Bajoria, there are plenty of documented and well researched correlations between smoking and complications post oral surgery
Healing of the socket typically takes a good two weeks. But remember it takes a year for the healing to really succeed. There are documented cases of people developing infections in their third molar sites a year from the time of the surgery. The initial healing is what most people notice which is within the first few weeks. The rest goes undetected.
Best Wishes and good health