Question

17. Summarize four advantages of tissue adhesives. 18. Explain the difference between absorbable and nonabsorbable sutures. When would each type of sutus be used? Give an example of each.

Answer 1

Ans) 17) Advantages of these topical adhesives include:

- rapid wound closure, painless application, reduced risk of needle sticks, absence of suture marks, and elimination of any need for removal.

18) Absorption occurs by enzymatic degradation in natural materials and by hydrolysis in synthetic materials. Hydrolysis causes less tissue reaction than enzymatic degradation. Nonabsorbable sutures elicit a tissue reaction that results in encapsulation of the suture material by fibroblasts.

Absorbable sutures include :- Polyglycolic Acid sutures, Polyglactin 910 , Catgut, Poliglecaprone 25 and Polydioxanone sutures. Non-Absorbable sutures include :- Polypropylene sutures, Nylon (poylamide), Polyester, PVDF, silk and stainless steel sutures.

Non-absorbable suture materials include stainless steel, polypropylene, nylon (polyamide), silk and polyester sutures. Both natural and synthetic non-absorbable sutures are available. Braided non-absorbable sutures like silk and polyester are available with coatings like silicone, wax and PTFE.