Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/6/2025

Management of Anticoagulation for Dental Procedures

Risk Stratification Approach

  • For more extensive dental surgery with higher bleeding risk, consider temporary warfarin dose adjustment rather than complete discontinuation, as recommended by the American College of Chest Physicians 1, 2
  • If interruption is deemed necessary, stop warfarin 5 days before the procedure, and check INR prior to the procedure to ensure it is <1.5, according to Praxis Medical Insights 3
  • Resume warfarin 12-24 hours after the procedure when adequate hemostasis is achieved, as suggested by the American College of Chest Physicians 2

Patient Risk Stratification for Thromboembolic Events

  • Recent thromboembolic event (<3 months) is a high-risk factor for thromboembolic events, and management may involve bridging with therapeutic-dose LMWH starting 2 days after stopping warfarin, with the last dose given at least 24 hours before the procedure, as recommended by Praxis Medical Insights 3
  • Venous thromboembolism >3 months ago is considered a low thromboembolic risk factor, according to Praxis Medical Insights 3

Practical Approach

  • Only consider warfarin interruption for extensive oral surgery with high bleeding risk, as recommended by the American College of Chest Physicians 1
  • If interruption is necessary, minimize the time off warfarin and consider bridging only for high thromboembolic risk patients, according to the American College of Chest Physicians 1