Before some dental treatments, patients with artificial joints are sometimes advised to take antibiotics. That’s because they could be at risk of developing an infection. Premedication (antibiotic prophylaxis) may reduce this risk. If you’ve had a total joint replacement, talk to your dentist and orthopedist before undergoing dental treatment.
The American Dental Association and the American Academy of Orthopedic Surgeons are currently in the process of developing evidence-based clinical guidelines on the topic of antibiotic prophylaxis for patients with orthopedic implants undergoing dental procedures.
Article taken from: http://www.mouthhealthy.org/en/az-topics/j/joint-replacement.aspx