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Patients with penicillin allergy more likely to experience dental implant failure
Dental implants are more than twice as likely to fail in people who report an allergy to penicillin and are given alternative antibiotics, compared to those given amoxicillin, a new study by researchers at NYU College of Dentistry shows.
The study, published in Clinical Implant Dentistry and Related Research, is the first to examine the impact of prescribing antibiotics other than amoxicillin for dental implants.
Dental implants provide secure, long-term solutions for replacing missing or damaged teeth. A screw-like implant is surgically placed in the jawbone to act as a replacement tooth's root and anchor the artificial tooth. The bone then fuses to the implant over several months, integrating it into the jaw.
While dental implants are largely successful, a small proportion of implants fail when the jawbone does not properly integrate the implant. This can happen for a variety of reasons, including infection, smoking, or injury to the tooth. To reduce the chance of infection, many dental providers prescribe amoxicillin-an antibiotic in the penicillin family-prior to and following implant surgery. If a patient reports an allergy to penicillin, alternative antibiotics can be prescribed.
Previous studies have shown that patients with a penicillin allergy experience higher rates of dental implant failure but have not looked at which antibiotics were used. To understand the outcomes of taking different antibiotics, NYU College of Dentistry researchers reviewed the charts of patients who received dental implants, documenting which antibiotics were given and whether their dental implant was successful or failed.
The sample included 838 patients-434 who reported having a penicillin allergy, as well as a random sample of 404 patients without the allergy. All patients without a penicillin allergy were given amoxicillin, while those who reported an allergy were given alternative antibiotics: clindamycin, azithromycin, ciprofloxacin, or metronidazole.
The researchers found that dental implants failed in 17.1% of patients who reported a penicillin allergy, compared to 8.4% of patients without an allergy. Patients who took certain antibiotics other than amoxicillin were much less likely to have successful dental implants; the failure rate for patients taking clindamycin was 19.9% and was 30.8% for azithromycin.
In addition, patients with an allergy to penicillin were more likely to experience earlier failure of their dental implant (less than 6 months) than those without an allergy (more than 12 months).
The reason why dental implants failed in patients with a penicillin allergy is unknown, the researchers write. It could be attributed to several factors, including reactions to the material used in implants or inefficacy of the alternative antibiotics.
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Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751