The aim of this study is to collect performance and safety data relating to the use and the follow-up of the HEMOCOLLAGENE® medical device in routine clinical practice from various hospitals and medical centers in oral dental surgery.

Patients will The data collected from the Post-Market Clinical Follow-up study will be used to support the regulatory requirements of post-market monitoring (risk management, residual risks, instructions for use...) and to increase the manufacturer's clinical data. Patients will be followed for 1 month.

Adverse events (safety) and device performance will be collected by the dentist during the routine follow-up visits.

Inclusion Criteria:

• Patient requiring oral surgery
• Patient with a bleeding requiring the use of an adjuvant hemostatic
• Patient implanted with HEMOCOLLAGENE® in dental surgery.
• Patient who signed his informed consent form

Exclusion Criteria:

• Inform Consent not signed
• Patients with acute oral infection.
• Patients with an unstable hemodynamic state (acute and/or chronic cardiovascular pathology, low arterial pressure, cardiac rhythm problem)
• Pregnant and / or breastfeeding patients.
• Patient with hypersensitivity or allergy to bovine collagen

The study population is made with the recruitment of participating centers which included at least one patient.

The analysis will be carried out on the patients included with evaluable observation sheets . The evaluability of a form will be defined during the development of the analysis plan according to the number of missing data and the nature of missing data.

The analysis sets are defined below:

• Intented-to-treat (ITT) population: The ITT population consists of all subjects not opposed to the use of their clinical data and implanted by the HEMOCOLLAGENE® medical device. This population will be the primary population analysis for safety and efficacy.
• Per Protocol (PP): The PP population includes all the patients implanted by the medical device HEMOCOLLAGENE® without any major deviation from the protocol. Protocol violations will be graded (major / minor) when reviewing data before database lock. This population will be the secondary population analysis.