Efficacy of a Collagen Hemostatic Dressing After Tooth Extraction

Inclusion Criteria: * Male or female, age \> 18 years old, * Patient undergoing a simple tooth extraction or multiple tooth extraction on the same quadrant, * Patient taking curative or preventive antithrombotic treatment or patient with a moderate thrombocytopenia, * Patient reachable after surgery, * Signed informed consent form, * Subject affiliated to a health insurance system, or is a beneficiary. Exclusion Criteria: * Known allergy to bovine collagen, * Preoperative INR\<1.5 or \>3 or instable, * Patient with high risk of bleeding, history of postoperative hemorrhagic complication, * Treatment with bone resorption inhibitor, or patient irradiated at the cervico-facial level, * Contraindication to anesthesia using articaine with 1:200,000 epinephrine, * Clinical follow-up expected to be difficult, * Presence of uncontrolled hypertension, uncompensated diabetes or other clinically relevant systemic alterations, * Current participation in another clinical trial or subject still within the exclusion period of a previous clinical trial, * Vulnerable subjects.