Hemophilia A/B
Inherited X-linked deficiency of clotting factor VIII (hemophilia A) or factor IX (hemophilia B) → impaired secondary hemostasis with prolonged and characteristically DELAYED bleeding after dental surgery (clot forms but is unstable). Severity by factor level (WFH 2020): severe <1% (<1 IU/dL), moderate 1-5%, mild 5-<40%; spontaneous bleeds mainly in severe disease. Bleeding management is procedure- and factor-plan-specific — invasive oral care needs an individualized hemostasis plan agreed with the patient's Hemophilia Treatment Centre (HTC)/hematologist (factor replacement, DDAVP for mild hemophilia A only, and/or antifibrinolytics) plus local measures. Avoid aspirin/non-selective NSAIDs and all IM injections; avoid inferior alveolar and other deep blocks without prior cover — prefer infiltration/intraligamentary techniques.
The full condition entry includes
- Safe vs avoid lists: antibiotics, analgesics, local anesthetics
- Vasoconstrictor limits and treatment modifications
- Pre/intra/post-op monitoring and deferral criteria
- Emergency management, explained for study
More medical conditions in dentistry
Dentalverse is an educational resource for dental students and dentists. This page is a study reference — it is not medical advice and does not replace clinical judgment. Always follow your institution's protocols and your supervisor's guidance.