4-0 Black Silk Suture 18", C-19 Needle 18.3 mm, 1/2 Circle Reverse Cut 4-0 Black Silk Suture 18", C-19 Needle 18.3 mm, 1/2 Circle Reverse Cut PSN734S Perma Sharp™ Sutures are designed for efficient and reliable soft tissue closure for all types of dental procedures. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.