Cigarettes, along with other tobacco products, have numerous negative health impacts. They can also significantly interfere with the ability of your body to heal after surgery.
Smoking limits the amount of oxygen in your blood, and it slows down your blood flow. Both of these factors greatly slow down the healing process. The physical act of smoking can also cause clots to become dislodged, resulting in a condition known as dry socket. When the clots are dislodged, this provides direct access for bacteria to get into your gums.
It is highly recommended that you quit smoking, and all other tobacco products, before treatment. If you are unable to quit completely, you will need to at least be able to abstain from using any tobacco products for a specified amount of time before treatment throughout your recovery period.