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Oral Surgery · single question

Catgut suture material is derived from which source?

  1. Synthetic polymer
  2. Porcine skin
  3. Human-derived collagen
  4. Bovine or ovine intestinal submucosa
Show answer and explanation

Correct answer: D. Bovine or ovine intestinal submucosa

  • A. Synthetic absorbables (Vicryl, Monocryl, PDS) are a different category and resorb by hydrolysis.
  • B. Porcine tissue is used for some collagen membranes but is not the source of catgut.
  • C. Human-derived materials are used in some grafts, not in catgut suture.
  • D. Correct. Catgut is a natural ABSORBABLE suture made from purified collagen of the intestinal submucosa of CATTLE (bovine) or SHEEP (ovine) — despite the name, never from cats. Plain gut resorbs in roughly 7–10 days; chromic gut is treated with chromium salts to extend that to about 2–3 weeks. It resorbs by enzymatic proteolysis, which provokes more tissue inflammation than synthetic sutures.

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