Raw material used in nylon suture is:-: (A) Polyethylene terephthalate, (B) Polyamide polymer, (C) Polybutylene terephthalate, (D) Polyester polymer
Answer is B. Raw material used in nylon suture is Polyamide polymer. Suture Types Raw material Tensile strength Absorption rate Silk Braided or twisted multifilament; Coated (with wax or silicone) or uncoated Natural proteinRaw silk from silkworm Loses 20% when wet; 80-100% lostby 6 months Fibrous encapsulation in body at 2-3 weeks ; Absorbed slowly over 1-2 yearQ Catgut Plain Collagen derived from healthy sheep or cattle Lost within 7-10 days Phagocytosis and enzymatic degradation within 7-10 daysQ Catgut Chromic Tanned with chromium salts to improve handling and resist degradation in tissueQ Lost within 21-28 days Phagocytosis and enzymatic degradation within 90 days Polyglactin (Vicryl) Braided multifilament Copolymer of lactide & glycolideQ in a ratio of 90:10, coated with polyglactin & calcium stearate Approx, 60% remains at 2 weeks; 30% remains at 3 weeks Hydrolysis minimal until 5-6 weeks; Complete absorption 60-90 daysQ Polyglyconate Monofilament Dyed or undyed Copolymer of glycolic acid and trimethylene carbonateQ Approx, 70% remains at 2 weeks; 55% remains at 3 weeks Hydrolysis minimal until 8-9 weeks; Complete absorption 180 daysQ Polyglycaprone (Monocryl) Monofilament Coplymer of glycolide & caprolactoneQ 21 days maximum 90-120 daysQ Polyglycolic acid (Dexon) Braided multifilament Dyed or undyed Coated or Uncoated Polymer of polyglycolic acidQ Approx, 40% remains at 1 week; 20% remains at 3 weeks HydrolysisQ minimal at 2 weeks; significant at 4 weeks; Complete absorption 60-90 daysQ Polydioxanone (PDS) Monofilament dyed or undyed Polyester polymerQ Approx, 70% remains at 2 weeks; 50% remains at 4 weeks; 14% remains at 8 weeks Hydrolysis minimal at 90 days; Complete absorption 180 daysQ Nylon Monofilament or braided multifilament Dyed or undyed Polyamide polymer Loses 15-20% per year Degrades at approximately 15-20% per year Polypropylene Monofilament. Dyed or undyed Polymer of propylene Infinite (>1 year) Non-absorbable: remains encapsulated in body tissues