Many people were once told to take antibiotics before every dental cleaning because of a heart condition or an artificial joint. Guidance has changed a lot. According to the American Dental Association (ADA), relatively few groups of patients now need “premedication” (antibiotic prophylaxis) before certain dental procedures. This guide explains who still does, why the rules narrowed and what to discuss with your dentist and doctors. Never start or stop a medicine without your own clinicians’ advice.
What antibiotic prophylaxis is
Some dental procedures release mouth bacteria into the bloodstream. Prophylaxis means taking an antibiotic beforehand to reduce the chance those bacteria cause an infection elsewhere. The ADA says recommendations have historically focused on two groups: people with heart conditions that could lead to infective endocarditis (an infection of the heart’s lining or valves) and people with prosthetic joints.
Heart conditions: a small, specific group
The ADA explains that American Heart Association (AHA) guidelines, issued in 2007 and reaffirmed by a 2021 AHA scientific statement, recommend prophylaxis only for patients at highest risk of a bad outcome from infective endocarditis. According to the ADA’s summaries of those guidelines, this includes people with:
- artificial (prosthetic) heart valves, including transcatheter-implanted valves
- prosthetic material used to repair a heart valve, such as annuloplasty rings or chords
- a history of infective endocarditis
- a heart transplant with valve regurgitation caused by a structurally abnormal valve
- certain congenital heart disease: unrepaired cyanotic congenital heart disease (including palliative shunts and conduits); a defect repaired with prosthetic material or a device during the first six months after repair; or a repaired defect with a residual defect at or next to the patch or device
The ADA states that, apart from the conditions listed, prophylaxis is no longer recommended for any other form of congenital heart disease.
Which procedures
For people in these groups, the ADA says prophylaxis is recommended for dental procedures that involve manipulating gum tissue or the area around the tooth root, or that perforate the lining of the mouth. Examples include deep cleanings and extractions. Ask your dentist whether your planned procedure qualifies.
Why the list shrank
The ADA explains that the evidence review behind the guidelines found the risk of adverse reactions to antibiotics generally outweighed the benefits for many patients who were previously considered eligible. Concern about drug-resistant bacteria was also a factor. The data are mixed on whether antibiotics before dental work prevent endocarditis at all. And people at risk are regularly exposed to mouth bacteria during daily activities such as brushing and flossing.
That last point leads to the guidelines’ main emphasis. The ADA quotes the AHA as stressing “the critical role of good oral health and regular access to dental care for all.”
Joint replacements: usually not needed
The ADA’s 2015 clinical practice guideline, based on a 2014 systematic review, found no association between dental procedures and prosthetic joint infections. It states that “in general, for patients with prosthetic joint implants, prophylactic antibiotics are not recommended prior to dental procedures to prevent prosthetic joint infection.” The ADA’s patient site adds that antibiotics given before dental procedures do not prevent such infections.
Exceptions
- For patients who had complications with their joint replacement surgery and need procedures involving gum manipulation or incisions, the ADA says prophylaxis should be considered only after consulting the patient and the orthopedic surgeon. If antibiotics are needed, the surgeon should recommend the regimen and, when reasonable, write the prescription.
- The ADA notes that people with compromised immune systems, for example from diabetes, rheumatoid arthritis, cancer, chemotherapy or long-term steroid use, may still be candidates.
The ADA says decisions about timing of dental care and any rare antibiotic use should be shared among the dentist, the orthopedic team and the patient, not handled through routine delays or automatic premedication.
Antibiotics have risks too
The ADA lists nausea, upset stomach and allergic reactions, including anaphylaxis, which can be life-threatening. It also lists antibiotic resistance and a higher risk of C. difficile infection, which causes diarrhea and other intestinal problems. It also notes that people over 70 face higher risk of adverse reactions to some antibiotics. That’s why taking antibiotics “just in case” is not harmless.
Children and people with disabilities
The ADA notes that congenital heart disease can make prophylaxis appropriate for some children, under the same narrow conditions, with doses based on the child’s weight. The National Institute of Dental and Craniofacial Research notes that heart conditions are common in some developmental disabilities, such as Down syndrome, and advises consulting a cardiologist about pre-treatment antibiotics.
What to do before your next appointment
- Update your medical history with the dental office every visit, including heart conditions, joint replacements, transplants and medicines.
- If you were told years ago to premedicate, ask your cardiologist or surgeon whether that still applies under current guidelines.
- If you do need prophylaxis, the ADA notes that patients sometimes forget their dose. Ask your dentist what to do if that happens, rather than guessing.
- For complex medical needs, a dental specialist or hospital-based dentist may be involved. See dental specialists explained, and for cancer patients, dental care during cancer treatment.
Frequently asked questions
I have a heart murmur. Do I need antibiotics?
Our sources list only specific high-risk conditions, and a murmur alone isn’t among them. Confirm with your cardiologist, since a murmur can have different causes.
I had a knee replaced. Do I need antibiotics for a cleaning?
In general, the ADA says no. Exceptions depend on your surgical history and immune status, so discuss it with your dentist and surgeon.
Who prescribes the antibiotic?
For heart-related prophylaxis, your dentist or physician may prescribe it. For joint-related cases, the ADA says it’s most appropriate for the orthopedic surgeon to recommend the regimen and, when reasonable, write the prescription.
Sources
- ADA: Antibiotic Prophylaxis Prior to Dental Procedures
- ADA MouthHealthy: Antibiotic Prophylaxis for Heart Patients
- ADA MouthHealthy: Joint Replacement
- NIDCR: Developmental Disabilities and Oral Health
By the Dentist Review Editorial Team.
This article is for general information only and is not medical advice. Talk to a licensed dentist about your own situation. See our disclaimer.
Featured image: “Antibiotic pills” by Maksym Kozlenko, via Wikimedia Commons, licensed CC BY-SA 4.0. Resized and compressed for the web.
Our guides are written and reviewed by the Dentist Review editorial team. We research each topic using public, authoritative sources such as the CDC, the National Institutes of Health (NIH/NIDCR), the American Dental Association (ADA) and CMS, and we update guides when guidance changes. Guides are for general information only and are not dental or medical advice; please read our disclaimer and learn more about us.