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Treatment Algorithm · Module
Antibiotic prophylaxis: the right dose, once, when it counts
Choosing prophylaxis for implant surgery. The best evidence supports a single pre-operative dose for routine placement; post-operative courses and endocarditis/joint regimens are reserved for specific indications. Stewardship matters — most healthy patients do not need a course of antibiotics.
Use: Prescribing reference
Core regimen: 2 g amoxicillin, 1 h pre-op
Principle: Stewardship
01 — Scenarios
Three prescribing situations
Match the patient and procedure to a scenario. Surgical prophylaxis (preventing implant failure / wound infection) is distinct from endocarditis/joint prophylaxis (a cardiac/orthopedic indication).
Scenario A
Routine straightforward placement
- Healthy patient, simple placement in native bone
- Single pre-op dose: 2 g amoxicillin, ~1 h before
- Reduces early failure (NNT ≈ 25 in the Cochrane review)
- Penicillin-allergic: alternative agent — note clindamycin is no longer favored
Scenario B
Advanced grafting / sinus
- GBR, block grafts, sinus augmentation
- Pre-op dose standard; a short post-op course sometimes used
- Evidence for post-op extension is weak
- Justify any course by the specific procedure/risk
Scenario C
Medically at-risk
- Infective-endocarditis risk per AHA cardiac criteria
- Prosthetic joints: not routinely indicated (ADA)
- IE regimen: amoxicillin 2 g, 30–60 min before
- This is a cardiac indication — separate from surgical prophylaxis
02 — Decision Pathway
Interactive prophylaxis selector
Identify the procedure complexity and the patient's medical risk, then select a regimen. Default to the minimum effective exposure; avoid routine multi-day courses.
Tap the scenario that best matches your patient and procedure.
Step 1 — Which scenario applies?
ROUTINE
Healthy, simple placement
Native bone, no medical risk flags.
ADVANCED
Grafting / sinus lift
Augmentation or extended surgery.
IE RISK
Cardiac endocarditis risk
Meets AHA high-risk cardiac criteria.
JOINT
Prosthetic joint, no other risk
Total joint replacement only.
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03 — Quick Reference
Scenario → regimen
Doses follow standard adult prophylaxis conventions; verify against current AHA/ADA guidance and local policy, and individualize for allergy, weight, and renal function.
| Scenario | Recommendation | Note |
|---|
| Routine placement | Single pre-op dose | Amoxicillin 2 g ~1 h before; no routine post-op course. |
| Penicillin allergy | Alternative agent | Choose per current guidance/allergy assessment; clindamycin no longer preferred. |
| Grafting / sinus lift | Pre-op ± short post-op | Post-op course only where justified by procedure/risk; evidence weak. |
| IE high-risk cardiac | IE regimen | Amoxicillin 2 g, 30–60 min before — a cardiac indication per AHA. |
| Prosthetic joint only | Not routine | ADA does not routinely recommend prophylaxis; consult orthopedics if uncertain. |
Reference
Sources & clinical disclaimer
For licensed clinicians — educational use only. This algorithm summarizes published consensus and is not a substitute for individual clinical judgment, examination, or the standard of care in your jurisdiction. Antibiotic guidance evolves (e.g., clindamycin and penicillin-allergy advice) and dosing must be individualized. Coordinate with the patient's physician (and cardiologist/orthopedic surgeon where relevant) for endocarditis or prosthetic-joint decisions, and follow antimicrobial-stewardship principles.
- Esposito M, Grusovin MG, Worthington HV. Interventions for replacing missing teeth: antibiotics at dental implant placement to prevent complications. Cochrane Database Syst Rev. 2013;(7):CD004152.
- Wilson W, et al. Prevention of Infective Endocarditis: Guidelines From the American Heart Association. Circulation. 2007;116(15):1736–1754 (and 2021 AHA scientific statement update).
- Sollecito TP, et al. The use of prophylactic antibiotics prior to dental procedures in patients with prosthetic joints: ADA Council on Scientific Affairs clinical practice guideline. J Am Dent Assoc. 2015;146(1):11–16.
Last reviewed: June 2026 · Next review due: June 2027 · Version 1.0