Tapered Fissure Burs | Cone Shape

Tapered fissure burs give cavity preparations convergent walls in a single pass. This collection covers the plain-cut US 168–172 family and the crosscut 698–704 series — including the workhorse 700 and 701 — with long (L) and round-end (R) variants for extended reach and rounded internal line angles.

The taper is the shape of retention-form dogma: draft angles for amalgam and crown preparations, delivered with Busch’s German blade geometry for clean, vibration-free cutting.

FAQ

What is a 701 bur used for? The US 701 crosscut tapered fissure bur (Busch figure 33, size 012) is a staple for crown sectioning and cavity preparation with convergent walls.

What is the difference between 170 and 700 series? Same taper shapes — 168–172 are plain cut for smoother walls, 698–704 add a crosscut for faster, cooler cutting.

Where are these burs made? Every instrument in this collection is manufactured by Busch & Co. in Engelskirchen, Germany — an ISO 13485-certified specialist in rotary precision instruments since 1905 — and ships fast from our US warehouse.

Reference resources: Bur Comparison Chart · Speed Chart · Color Coding & ISO Guide · Glossary