Summary: In a placebo-controlled trial in well-controlled type 2 diabetic patients having a single simple tooth extraction, prophylactic amoxicillin gave no reduction in dry socket, infection, or delayed healing, indicating routine antibiotics are unnecessary for this procedure.
PICO Summary
| Element | Detail |
|---|---|
| Population | 56 controlled type 2 diabetic patients (aged 41–81) needing a single non-impacted extraction without acute infection; Argentina. |
| Intervention | Amoxicillin around the extraction. |
| Comparison | Placebo. |
| Outcome | No significant difference in pain, swelling, trismus, bleeding, alveolar osteitis, infection, or delayed healing at 2, 7, or 14 days. No case of dry socket or infection in either arm. The amoxicillin group actually took more analgesics (p<0.05). |
Expert Commentary
This is a useful antibiotic-stewardship trial, and I welcome its negative result. The reflex to cover any diabetic patient with antibiotics before dental work has long outrun its evidence, and this study makes two sensible points: a well-controlled diabetic with a near-normal HbA1c is not the same infection risk as a poorly controlled one, and a simple extraction is low-risk to begin with. Finding no difference in infection, dry socket, or healing, with not a single infection in either arm, supports withholding prophylaxis here, and the detail that the antibiotic group took slightly more analgesics is a quiet reminder that drugs are not free of downsides. My caveats are about boundaries: it is a small study of 56 patients, the HbA1c threshold for well-controlled is not tightly specified, and these findings apply only to simple extractions, not implants, flaps, or bone work, nor to poorly controlled patients. Can I use this with my patients? Yes, directly. When a well-controlled diabetic asks whether they need antibiotics for a routine extraction, I can reassure them, on evidence, that they generally do not, while reserving antibiotics for genuinely higher-risk procedures or poor glycaemic control.
References
Garcia-Blanco M, Nuñez T, Gualtieri AF, Stolbizer F, Puia SA. Randomized controlled trial comparing antibiotics to placebo for single simple dental extractions in diabetic patients. Acta Odontol Latinoam. 2025;38(1):82–90. doi:10.54589/aol.38/1/82