Collagen Haemostatic Agent — MFDS Part 1 MCQ

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EasyOral Surgery PrinciplesCollagen Haemostatic AgentMFDS Part 1

Which local haemostatic material placed in an extraction socket provides a collagen matrix that promotes platelet adhesion, activation and aggregation?

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Correct answer: D — Absorbable collagen plug

An absorbable collagen plug provides a matrix to which platelets adhere and become activated, promoting platelet aggregation and formation of the primary haemostatic plug. SDCEP recognises collagen sponge as haemostatic packing material for dental sockets. Oxidised regenerated cellulose assists clot formation through a physical matrix and acidic local environment but is not collagen. A gelatin sponge is also an absorbable scaffold but is derived from gelatin rather than functioning as a native collagen platelet-activating matrix. Bone wax controls bleeding mainly by mechanical tamponade and is unsuitable as routine socket packing because it is non-resorbable and may impede healing. Tranexamic acid is an antifibrinolytic that stabilises an existing clot rather than initiating platelet aggregation.

Reference: Scottish Dental Clinical Effectiveness Programme. Management of Dental Patients Taking Anticoagulants or Antiplatelet Drugs, 2nd edition, section 4.1 Haemostatic Measures. 2022. https://www.sdcep.org.uk/media/ypnl2cpz/sdcep-management-of-dental-patients-taking-anticoagulants-or-antiplatelet-drugs-2nd-edition.pdf