{"title":"US No. 57 Bur – Busch Straight Fissure Carbide, Made in Germany","description":"\u003cp\u003eThe \u003cstrong\u003eUS No. 57\u003c\/strong\u003e is the American number for a straight fissure bur with a 1 mm head (ISO size 010): a parallel-sided cylinder with a flat end, so it cuts straight walls and a flat floor in one motion. Busch \u0026amp; Co. manufactures it in Germany as \u003cstrong\u003eBusch No. 21 010\u003c\/strong\u003e and \u003cstrong\u003eBusch No. 21L 010\u003c\/strong\u003e. Every US No. 57 on this page is a genuine Busch instrument and ships from our US warehouse.\u003c\/p\u003e\u003ch2\u003eWhich US No. 57 Do You Need?\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;\"\u003e\u003ctable style=\"border-collapse:collapse;font-size:14px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eUS No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBusch No.\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eMaterial\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eCut\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eShank\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003eBest for\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 10px;text-align:left;background:#f6f6f6;\"\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-fg-pack-of-6\"\u003e57\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 010\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFG\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHigh-speed handpiece\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-ra-pack-of-6\"\u003e57\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 010\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eRA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eSlow-speed contra-angle\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21-010-hp-pack-of-6\"\u003e57\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21 010\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHP\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eStraight handpiece: laboratory and denture work\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21l-010-fg-long-pack-of-6\"\u003e57L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21L 010\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eFG\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eLonger head for deeper preparations\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e\u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21l-010-hp-long-pack-6\"\u003e57L\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e21L 010\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eCarbide\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003ePlain-cut\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eHP\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003eLonger head for deeper preparations\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 10px;\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp style=\"font-size:13px;\"\u003eFG (friction grip, 1.6 mm shank, high-speed handpiece). RA (latch, 2.35 mm shank, contra-angle). HP (2.35 mm shank, straight handpiece). See the \u003ca href=\"\/pages\/busch-bur-size-chart\"\u003eBusch Bur Size Chart\u003c\/a\u003e for head and shank dimensions.\u003c\/p\u003e\u003ch2\u003eClinical Uses of the US No. 57\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCavity preparation:\u003c\/strong\u003e opening through enamel and establishing the straight walls and flat floor of Class I and Class II preparations, including proximal boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestoration removal:\u003c\/strong\u003e cutting out old amalgam and composite; crosscut versions clear the debris instead of packing with it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSectioning:\u003c\/strong\u003e dividing crowns and multi-rooted teeth, where the surgical-length versions add reach and visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and denture work:\u003c\/strong\u003e the HP carbide and steel versions trim acrylic, adjust denture bases and reduce plaster models in the straight handpiece.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAt 1 mm the No. 57 is the standard operative size.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003e57L\u003c\/strong\u003e (Busch 21L 010) carries a longer cutting head for deeper boxes and taller walls.\u003c\/p\u003e\u003cp\u003eThe No. 57 is plain-cut; its crosscut twin in the same shape and size is the \u003ca href=\"\/collections\/us-557-bur\"\u003eUS No. 557 (Busch 36 010)\u003c\/a\u003e. Crosscut blades cut faster and clear debris; plain-cut blades leave a smoother wall.\u003c\/p\u003e\u003ch2\u003eSpeed and Technique\u003c\/h2\u003e\u003cp\u003eRun the FG versions in the high-speed handpiece with continuous water spray and light, intermittent pressure; let the blades do the work. HP versions run at laboratory speed in the straight handpiece. Maximum recommended speeds for every Busch shape are in our \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eDental Bur Speed Chart\u003c\/a\u003e, and reprocessing steps in the \u003ca href=\"\/pages\/dental-bur-sterilization-guide\"\u003eBur Sterilization Guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eMade in Germany by Busch \u0026amp; Co.\u003c\/h2\u003e\u003cp\u003eBusch \u0026amp; Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Every instrument on this page is a genuine Busch product, precision-ground on a concentric shank under ISO-certified quality management and guaranteed to arrive free of manufacturing defects under our \u003ca href=\"\/pages\/warranty\"\u003eBusch arrival guarantee\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Busch number for a US 57 bur?\u003c\/strong\u003e Busch No. 21 010 in carbide (FG\/RA\/HP). The 57L is Busch 21L 010.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is a No. 57 bur?\u003c\/strong\u003e The No. 57 has a 1 mm head diameter (ISO size 010) on a straight fissure bur head, ISO shape 107 (cylinder, flat end).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between a No. 57 and a No. 557?\u003c\/strong\u003e Same shape and size; one is plain-cut and the other crosscut. The No. 57 is plain-cut — crosscut cuts faster and clears debris, plain-cut leaves a smoother surface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat do the letters after No. 57 mean?\u003c\/strong\u003e The 57L (Busch 21L 010) carries a longer cutting head for deeper boxes and taller walls.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre Busch No. 57 burs reusable?\u003c\/strong\u003e Yes. Carbide and steel burs are cleaned, disinfected and sterilized between patients and replaced when they dull; the \u003ca href=\"\/pages\/dental-bur-sterilization-guide\"\u003eBur Sterilization Guide\u003c\/a\u003e gives the validated steps.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated resources:\u003c\/strong\u003e \u003ca href=\"\/pages\/us-bur-numbers\"\u003eUS Bur Number Finder\u003c\/a\u003e · \u003ca href=\"\/pages\/bur-comparison-chart\"\u003eBur Comparison Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-speed-chart\"\u003eSpeed Chart\u003c\/a\u003e · \u003ca href=\"\/pages\/dental-bur-glossary\"\u003eBur Glossary\u003c\/a\u003e · Nearby sizes: \u003ca href=\"\/collections\/us-55-bur\"\u003eUS No. 55\u003c\/a\u003e, \u003ca href=\"\/collections\/us-56-bur\"\u003eUS No. 56\u003c\/a\u003e, \u003ca href=\"\/collections\/us-58-bur\"\u003eUS No. 58\u003c\/a\u003e, \u003ca href=\"\/collections\/us-59-bur\"\u003eUS No. 59\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"carbide-cylinder-flat-cutter-dental-bur-21-010-hp-pack-of-6","title":"US No. 57 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 010 – HP | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e from Busch \u0026amp; Co. GmbH is a precision-engineered rotary instrument designed for demanding cutting and shaping tasks across a range of professional disciplines. Manufactured in Germany, this instrument — catalogue reference 21 010 (US No. 57) — is classified under ISO standard 500 104 107 006 010 and is supplied in a convenient pack of six.\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e features a cylinder flat geometry that delivers clean, controlled material removal. The carbide construction ensures long-lasting edge retention and consistent cutting performance across repeated use. As a high-performance (HP) shank instrument, it is compatible with standard straight handpieces used in laboratory and technical settings.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e is well-suited for the following dental laboratory applications:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Crown_Bridge_Tech.png?v=1767131647\" alt=\"Crown and Bridge Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCrown and Bridge Technology\u003c\/strong\u003e — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Plastics_Tech.png?v=1767131648\" alt=\"Plastics Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003ePlastics Technology\u003c\/strong\u003e — Shaping, trimming and finishing of acrylic dentures and appliances.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Making.png?v=1767131647\" alt=\"Model Making\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Making\u003c\/strong\u003e — Trimming and detailing of plaster and stone models.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Cast_Tech.png?v=1767131648\" alt=\"Model Casting Technique\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Casting Technique\u003c\/strong\u003e — Finishing and adjustment of cast metal frameworks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCylinder flat cutter geometry for uniform, flat-bottomed cuts\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for durability and cutting efficiency\u003c\/li\u003e\n\u003cli\u003eISO classification: 500 104 107 006 010\u003c\/li\u003e\n\u003cli\u003eHP (straight handpiece) shank type\u003c\/li\u003e\n\u003cli\u003ePack of 6 for laboratory convenience\u003c\/li\u003e\n\u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are working in dental technology, model casting, or plastics fabrication, the \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e provides the reliability and precision that professionals require. Each bur in this pack meets the exacting quality standards associated with Busch \u0026amp; Co. GmbH's German manufacturing heritage.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat handpiece is this bur compatible with?\u003c\/strong\u003e This is an HP (high-performance straight handpiece) shank bur, compatible with standard laboratory straight handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included in this pack?\u003c\/strong\u003e Each pack contains 6 individual burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this instrument?\u003c\/strong\u003e The ISO classification is 500 104 107 006 010.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this carbide cylinder flat cutter dental bur made in Germany?\u003c\/strong\u003e Yes, it is manufactured in Germany by Busch \u0026amp; Co. GmbH.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-010-hp\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.104.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.11.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-010-HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eSS White\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003e310064\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eNTI (Kerr Rotary)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHP57-KC5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21.104.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367837339934,"sku":"020449","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-zt-base_7191d2ec-0e2c-4770-8503-66b995543f37.png?v=1766500212"},{"product_id":"carbide-cylinder-flat-cutter-dental-bur-21l-010-hp-long-pack-6","title":"US No. 57L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 21L 010 – HP | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e 21L 010 (US No. 57L) from Busch \u0026amp; Co. GmbH is a precision-engineered HP straight fissure (cylinder) long carbide instrument designed for demanding dental and technical applications. This \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e is classified under ISO standard 500 104 110 006 010, ensuring consistent quality and dimensional accuracy across every pack.\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eManufactured in Germany, this instrument delivers the reliability and precision that professionals in dental and technical fields require. The long cylinder form factor and carbide construction make it well-suited for controlled material removal across a range of substrates. Each pack contains 6 burs, providing excellent value for busy practices and technical workshops.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbide Cutter, Cylinder Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS No.:\u003c\/strong\u003e 57L\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 500 104 110 006 010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e HP (Handpiece)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 pieces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Germany\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e is suitable for a broad range of professional applications, including:\u003c\/p\u003e\u003cp\u003eWhether you are working in a dental laboratory or a technical production environment, the \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e 21L 010 offers the consistent cutting performance and durability expected from a German-engineered instrument. Busch \u0026amp; Co. GmbH has long been recognized for producing precision rotary instruments that meet the exacting standards of dental and technical professionals worldwide.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder flat cutter dental bur\u003c\/strong\u003e is well-suited for the following dental laboratory applications:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Crown_Bridge_Tech.png?v=1767131647\" alt=\"Crown and Bridge Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCrown and Bridge Technology\u003c\/strong\u003e — Shaping, trimming and finishing of crown and bridge frameworks in the laboratory.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Plastics_Tech.png?v=1767131648\" alt=\"Plastics Technology\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003ePlastics Technology\u003c\/strong\u003e — Shaping, trimming and finishing of acrylic dentures and appliances.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Making.png?v=1767131647\" alt=\"Model Making\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Making\u003c\/strong\u003e — Trimming and detailing of plaster and stone models.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Model_Cast_Tech.png?v=1767131648\" alt=\"Model Casting Technique\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eModel Casting Technique\u003c\/strong\u003e — Finishing and adjustment of cast metal frameworks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e The ISO classification is 500 104 110 006 010.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included in each pack?\u003c\/strong\u003e Each pack contains 6 burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does the 21L 010 use?\u003c\/strong\u003e It uses an HP (Handpiece) shank.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is this bur manufactured?\u003c\/strong\u003e This instrument is made in Germany by Busch \u0026amp; Co. GmbH.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21l-010-hp\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.104.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.11.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21L-010-HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21L.104.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367839174942,"sku":"020573","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21l-zt-base_6c2fba4f-c94f-45b3-97c9-ea10ee2ca39e.png?v=1766500313"},{"product_id":"carbide-cylinder-fissure-dental-bur-21-010-ra-pack-of-6","title":"US No. 57 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 010 – RA | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003eBusch No. 21 010 – RA\u003c\/strong\u003e (US No. 57) delivers a 1.0 mm (ISO 010) flat-end carbide cylinder fissure head on a \u003cstrong\u003elatch-type right-angle (RA) shank\u003c\/strong\u003e for slow-speed contra-angle handpieces. It is the low-speed counterpart to the 21 010 FG and is supplied as a pack of 6, manufactured in Germany by Busch \u0026amp; Co. GmbH.\u003c\/p\u003e\u003ch2\u003eWhy choose the RA version\u003c\/h2\u003e\u003cp\u003eRunning a 1.0 mm cylinder at low speed in a latch contra-angle is typically favoured for controlled dentine work — finishing cavity floors and walls, removing residual caries near the pulp with more tactile feedback than a turbine allows, and small-scale preparation adjustments. The RA shank locks securely into standard slow-speed handpieces; for high-speed enamel cutting the No. 57 is also available as an FG bur.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso available:\u003c\/strong\u003e \u003ca href=\"\/products\/carbide-cylinder-fissure-bur-21-012-ra-fiss-cyl-6pk\"\u003eNo. 21 012 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-fg-pack-of-6\"\u003eNo. 21 010 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-012-fg-pack-of-6\"\u003eNo. 21 012 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-016-fg-pack-of-6\"\u003eNo. 21 016 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21-016-hp-pack-of-6\"\u003eNo. 21 016 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-bur-21r-014-hp-pack-of-6\"\u003eNo. 21R 014 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-fissure-bur-21r-014-fg-pack-of-6\"\u003eNo. 21R 014 – FG\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e features a flat-ended cylinder geometry, making it ideal for controlled excavation and fissure preparation procedures. The carbide construction ensures long-lasting sharpness and consistent cutting efficiency across multiple uses. Each pack contains 6 burs, offering excellent value for busy dental practices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eStandard Classification:\u003c\/strong\u003e ISO: 500 204 107 006 010\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUS No.:\u003c\/strong\u003e 57  |  \u003cstrong\u003eItem No.:\u003c\/strong\u003e 21 010\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCarbide construction for superior hardness and cutting performance\u003c\/li\u003e\n\u003cli\u003eCylinder flat head geometry for precise preparation\u003c\/li\u003e\n\u003cli\u003eEngineered for excavating and fissure procedures\u003c\/li\u003e\n\u003cli\u003eISO-classified for standardized clinical use\u003c\/li\u003e\n\u003cli\u003eMade in Germany to stringent quality standards\u003c\/li\u003e\n\u003cli\u003eSold in a convenient pack of 6\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is particularly well-suited for cavity and fissure preparation, where a flat-ended profile provides clean, accurate cuts with minimal tissue damage. Its design supports efficient removal of decay while maintaining cavity wall integrity.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e The ISO classification is 500 204 107 006 010, ensuring compatibility and standardization across dental settings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included per pack?\u003c\/strong\u003e Each pack contains 6 individual carbide cylinder fissure dental burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat procedures is this bur designed for?\u003c\/strong\u003e It is designed for cavity preparation and fissure excavation in restorative dentistry.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-010-ra\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.204.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.21.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-010-RA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eSS White\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003e310017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eAlpen (Coltène)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eR200057\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eEdenta\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eC21.204.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367854936350,"sku":"020505","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_ff8e6d27-cbd7-4194-82bf-6a63190bfc0b.png?v=1766500218"},{"product_id":"carbide-cylinder-fissure-dental-bur-21-010-fg-pack-of-6","title":"US No. 57 Busch Carbide Straight Fissure (Cylinder) Bur | Busch No. 21 010 – FG | Pack of 6","description":"\u003cp\u003e\u003cstrong\u003eBusch No. 21 010 – FG\u003c\/strong\u003e (US No. 57) is the smallest-diameter friction-grip bur in the 21 straight fissure (cylinder) line: a 1.0 mm (ISO 010) flat-end carbide cylinder on an \u003cstrong\u003eFG shank for high-speed turbine handpieces\u003c\/strong\u003e. Pack of 6, made in Germany by Busch \u0026amp; Co. GmbH; the same head is offered as 21 010 RA for latch contra-angles.\u003c\/p\u003e\u003ch2\u003eWhy choose the FG version\u003c\/h2\u003e\u003cp\u003eA 1.0 mm cylinder in a high-speed turbine is typically used for conservative access — opening small occlusal lesions, refining narrow fissure preparations and creating fine, parallel walls with minimal removal of sound tissue. Its FG shank suits the air-turbine or electric high-speed handpieces used chairside; if you prefer to run the No. 57 at low speed in a latch contra-angle, choose the RA version.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso available:\u003c\/strong\u003e \u003ca href=\"\/products\/carbide-cylinder-fissure-bur-21-012-ra-fiss-cyl-6pk\"\u003eNo. 21 012 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-010-ra-pack-of-6\"\u003eNo. 21 010 – RA\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-012-fg-pack-of-6\"\u003eNo. 21 012 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-fissure-dental-bur-21-016-fg-pack-of-6\"\u003eNo. 21 016 – FG\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-flat-cutter-dental-bur-21-016-hp-pack-of-6\"\u003eNo. 21 016 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-bur-21r-014-hp-pack-of-6\"\u003eNo. 21R 014 – HP\u003c\/a\u003e, \u003ca href=\"\/products\/carbide-cylinder-round-fissure-bur-21r-014-fg-pack-of-6\"\u003eNo. 21R 014 – FG\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbide, Cylinder Flat, Excavating and Fissure Bur\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUS No.:\u003c\/strong\u003e 57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 500 314 107 006 010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e FG (Friction Grip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 burs per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cp\u003eAs a high-quality \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e, this instrument features a flat-end cylinder geometry that provides controlled, predictable cutting. The carbide construction ensures superior hardness and edge retention compared to standard steel alternatives, making it a reliable choice for demanding clinical environments. Busch burs are proudly made in Germany, reflecting a long-standing tradition of precision manufacturing in dental instrumentation.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur uses an FG (Friction Grip) shank, compatible with standard high-speed handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included in each pack?\u003c\/strong\u003e Each pack contains 6 carbide cylinder fissure dental bur units, providing excellent value for busy dental practices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification for this bur?\u003c\/strong\u003e The ISO classification is 500 314 107 006 010, corresponding to US No. 57.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21-010-fg\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.314.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21.31.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21-010-FG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eSS White\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003e310116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eNTI (Kerr Rotary)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eFG57-KC0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eAlpen (Coltène)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eR100057\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKarl Schumacher\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBCO0057F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367862604062,"sku":"020553","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_fd7314ac-834c-4c9a-8498-b65211e95a56.png?v=1766500203"},{"product_id":"carbide-cylinder-fissure-dental-bur-21l-010-fg-long-pack-of-6","title":"US No. 57L Busch Carbide Straight Fissure (Cylinder) Long Bur | Busch No. 21L 010 – FG | Pack of 6","description":"\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e 21L 010 (US No. 57L) is a precision-engineered rotary instrument designed for demanding restorative and operative dentistry procedures. Manufactured by Busch \u0026amp; Co. GmbH in Germany, this long-shank carbide bur delivers consistent, controlled cutting performance in a variety of clinical applications.\u003c\/p\u003e\u003ch2\u003eProduct Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Carbide, Cylinder Flat, Excavating and Fissure Bur\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Classification:\u003c\/strong\u003e 500 314 110 006 010\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank:\u003c\/strong\u003e FG (Friction Grip), Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 6 burs per pack\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is ideally suited for cavity and fissure preparation, where precise outline form and clean cavity walls are essential. Its cylinder flat geometry enables the clinician to establish flat pulpal floors and defined axial walls with minimal vibration and efficient material removal.\u003c\/p\u003e\u003cp\u003eThe \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e is well-suited for the following clinical procedures:\u003c\/p\u003e\u003ctable role=\"presentation\" style=\"border:0;border-collapse:collapse;width:100%;max-width:640px;margin:0 0 1em 0;background:transparent;\"\u003e\u003ctbody\u003e\u003ctr\u003e\n\u003ctd style=\"border:0;padding:6px 14px 6px 4px;text-align:center;vertical-align:middle;width:52px;background:transparent;line-height:0;font-size:0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/Cavity_Fissure_Prep.png?v=1767131647\" alt=\"Cavity\/Fissure Preparation\" width=\"34\" height=\"34\" loading=\"lazy\" style=\"display:block;margin:0 auto;width:34px;height:34px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"border:0;padding:6px 0;text-align:left;vertical-align:middle;background:transparent;\"\u003e\n\u003cstrong\u003eCavity\/Fissure Preparation\u003c\/strong\u003e — Opening, extending and shaping cavities and fissures with controlled removal of enamel and dentin.\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eWhy Choose This Bur\u003c\/h2\u003e\u003cp\u003eAs a genuine \u003cstrong\u003ecarbide cylinder fissure dental bur\u003c\/strong\u003e made in Germany, this instrument reflects the exacting standards of Busch \u0026amp; Co. GmbH. German engineering ensures repeatable cutting geometry, long service life, and reliable performance across clinical settings. Each pack contains six burs, providing excellent value for high-volume practices.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/MadeInGermanySmall.png?v=1775134964\" alt=\"Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany\"\u003e\u003c\/div\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat shank type does this bur use?\u003c\/strong\u003e This bur features an FG (Friction Grip) long shank, compatible with standard high-speed handpieces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many burs are included?\u003c\/strong\u003e Each pack contains 6 individual carbide burs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ISO classification?\u003c\/strong\u003e The ISO standard classification for this bur is 500 314 110 006 010.\u003c\/p\u003e\u003ch2\u003e\u003ca href=\"\/pages\/bur-comparison-chart#b-21l-010-fg\" style=\"color:inherit;text-decoration:none;\"\u003eCompare With\u003c\/a\u003e\u003c\/h2\u003e\u003ctable style=\"border-collapse:collapse;margin:0 0 1em 0;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eManufacturer\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:6px 12px;text-align:left;background:#f6f6f6;\"\u003eReference\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eKomet (Gebr. Brasseler)\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.314.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eBrasseler USA\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eH21L.31.010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eMeisinger\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eHM21L-010-FG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003eSS White\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px 12px;\"\u003e310146\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer literature:\u003c\/strong\u003e Busch catalogs and product brochures for this line are available in our \u003ca href=\"\/pages\/busch-burs-catalogs\"\u003eBusch Burs Catalog Library\u003c\/a\u003e.\u003c\/p\u003e","brand":"Busch \u0026 Co. GmbH","offers":[{"title":"Default Title","offer_id":50367862931742,"sku":"020585","price":40.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/files\/21-base_76bf737b-69f5-47a2-963b-cd8fab4a30ab.png?v=1766500306"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/1318\/5566\/collections\/21-base_fd7314ac-834c-4c9a-8498-b65211e95a56.png?v=1789481587","url":"https:\/\/deutschedt.com\/collections\/us-57-bur.oembed","provider":"Deutsche Dental Technologien","version":"1.0","type":"link"}