It appears that women who use birth control pills may be twice as likely to develop dry socket. Dry socket is an extremely painful condition in which proper healing after an extraction is inhibited. This increased incidence of dry socket in women taking the pill appears to be related to increased estrogen levels. Women taking the pill have almost a 33 percent chance of developing dry socket if molars are extracted in the first 22 days of their cycle. However, for women who had the extractions on days 23 to 28 of their cycle, there appears to be no increase in the incidence of dry socket.
Antibiotics used in dentistry can interfere with the action of birth control pills.
Birth control pills are composed of both estrogen and progestogen. These actions increase the fertility of the patient and can result in unexpected pregnancies. Some of the more common antibiotics used in dentistry that might have this effect include penicillins, tetracyclines, erythromycin and cephalosporins. If your dentist prescribes any of these antibiotics for infections, you should always use some other form of contraception during the course of antibiotics and for several days after completion of antibiotic therapy. It might not be a bad idea to use additional forms of contraception for the completion of that cycle.