US Bur Number Finder

Reorder by the number you know. American dentistry identifies burs by the traditional US numbering system — ¼ through 10 for rounds, 557 for the crosscut fissure, 330 for the pear — while German manufacturers use figure numbers. Every Busch product in our store carries its US number right in the title, so tap any number below to jump straight to the matching instruments in every available shank and size.

Round Burs (Rosehead)

The classic excavating shape. Fractional numbers ¼–¾ are the smallest heads; SX and SXM suffixes are Busch’s low-vibration excavating cuts. Shop the full round burs collection →

1/4 1/2 3/4 1 1 1/2 1SX 2 2S 2SX 2SXM 3 3S 3SX 3SXM 4 4S 4SX 4SXM 5 5S 5SX 5SXM 6 6S 6SX 6SXM 7 7S 7SX 7SXM 8 8S 8SX 8SXM 9 10 10S 10SX 10SXM 11 19 20

Inverted Cone

Undercuts and flat cavity floors, US 33–41. Shop the full inverted cone collection →

33 33 1/2 34 34 1/2 35 36 37 38 39 40 41 331L 332L 333L

Wheel

Wheel-shaped burs, US 11–18. Shop the full wheel collection →

11 12 13 14 15 16 17 18

Pear

Conservative access and preparation, US 330–333 (L = long). Shop the full pear collection →

330 331 332 333

Straight Fissure (Cylinder)

Plain cut 55–63, crosscut 555–563; L = long, 1155+ = round-end (R) versions. Shop the full straight fissure collection →

55 56 57 57L 58 58L 59 59L 60 61 62 63 555 556 557 557L 557X 558 558L 558X 559 560 561 562 563 564 1157 1158 1159 1556 1557 1558 1559 1560 1561

Tapered Fissure (Cone)

Plain cut 168–172, crosscut 698–704; 1700s = round-end versions. Shop the full tapered fissure collection →

168 169 170 170L 171 171L 172 698 699 699L 700 700L 701 701L 701X 702 702L 702X 703 703X 704 705 706 1168 1170 1171 1172 1700 1701 1702 1703

Finishing Burs

Multi-blade carbide finishers: 7000s round, 7100s flame, 7300s pear.

242 7002 7004 7005 7006 7008 7009 7102 7104 7106 7108 7303 7304

Other Shapes

End-cutting, surgical, and specialty numbers. US 958 is the end-cutting cylinder — Busch figure 207 — a mapping confirmed across manufacturers: Komet codes the same pattern H207, Meisinger HM207, and Brasseler USA sells theirs as the “958 FG” outright. Surgical bone cutters (Busch 162A, 164LA and kin) sit outside the US numbering system entirely; to cross-shop those, use the Dental Bur Comparison Chart, where the 164LA long-neck bone cutter is paired with its Komet H254LE counterpart.

1/2 3 4 303 321 958

Know the German figure instead? Our Bur Comparison Chart maps Busch figures to Komet, Brasseler USA, Meisinger, NTI, Alpen, Edenta, and Horico references — and our Glossary explains how the US and figure systems relate.

All Busch instruments are manufactured by Busch & Co. in Engelskirchen, Germany, and ship fast from our US warehouse.

Part of our Dental Burs & Rotary Instruments hub.