The common causes of lip swelling after tooth extraction include local injury, allergy and secondary infection.
1. Local injury: if the extraction surgery near the inner lip mucosa, may accidentally damage the inner lip mucosa, can lead to mucosal epithelial cell rupture, tissue fluid seepage into the tissue space, which in turn cause lip edema.
2. Allergy: If the lips are allergic to the antiseptic solution used for tooth extraction, such as 75% alcohol solution, povidone-iodine solution, etc., under the stimulation of histamine and other immune factors, the local capillary permeability of the lips increases, which can cause swelling of the lips.
3. secondary infection: if the extraction is close to the lips of the incisors, after the extraction of teeth care is not in place, resulting in the extraction of teeth left behind by the wound infection, the lips may be implicated in the inflammatory secretion stimulation of the local vasodilatation, which in turn caused the swelling of the lips.
If the lips are swollen after tooth extraction, you should go to the hospital in time to receive professional doctor’s treatment.