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Oral Surgery · single question

Which of the following haemostatic or grafting materials is NOT of animal origin?

  1. Absorbable gelatin sponge
  2. Catgut suture
  3. Synthetic polymer foam
  4. Xenograft bone substitute
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Correct answer: C. Synthetic polymer foam

  • A. Absorbable gelatin sponge (Gelfoam) is made from purified porcine or bovine skin gelatin.
  • B. Catgut suture is manufactured from the purified collagen of bovine or ovine intestinal submucosa.
  • C. Correct. A SYNTHETIC POLYMER FOAM is manufactured chemically and contains no animal-derived material. This distinction matters clinically: patients may decline animal-derived products on religious or ethical grounds (bovine products in Hindu patients, porcine products in Muslim and Jewish patients, any animal product in vegan patients), and disclosing material origin during informed consent is a genuine professional obligation.
  • D. A xenograft is by definition derived from another species — most commonly deproteinised bovine bone.

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