US No. 9406 Bur – Busch Ultra Fine Finishing Football (Egg) Carbide, Made in Germany

The US No. 9406 is the American number for an ultra-fine egg (football) finishing bur with a 1.8 mm head (ISO size 018): the 30-blade version of the No. 7406, leaving a pre-polish surface on composite and ceramic. Busch & Co. manufactures it in Germany as Busch No. 44E-UF 018, white ring. Every US No. 9406 on this page is a genuine Busch instrument and ships from our US warehouse.

Which US No. 9406 Do You Need?

US No.	Busch No.	Material	Cut	Shank	Best for	Pack
9406	44E-UF 018	Carbide	Ultra-fine, 30 blades	FG	Pre-polish on composite and ceramic	2

FG (friction grip, 1.6 mm shank, high-speed). See the Busch Bur Size Chart for head and shank dimensions.

Clinical Uses of the US No. 9406

Pre-polish: the final carbide pass on occlusal composite before rubber polishers.
Ceramic adjustment: smoothing small occlusal adjustments on glazed ceramic without a diamond.
Lingual surfaces: a glass-like finish on anterior lingual concavities.

Sequence: contour with the No. 7406, smooth with the No. 8406, then finish with the No. 9406.

Speed and Technique

Ultra-fine finishers work at light pressure and moderate speed with water spray; let the 30 blades produce the surface. Maximum recommended speeds for every Busch shape are in our Dental Bur Speed Chart, and reprocessing steps in the Bur Sterilization Guide.

Made in Germany by Busch & Co.

Busch & 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 Busch arrival guarantee.

Dental Instruments, Tools, Burs, Diamonds and Polishers Made In Germany

FAQ

What is the Busch number for a US 9406 bur? Busch No. 44E-UF 018 in carbide, white ring, FG shank.

What size is a No. 9406 bur? The No. 9406 has a 1.8 mm head diameter (ISO size 018) on an egg-shaped finishing head, ISO shape 277, with 30 blades.

Does a 30-blade bur replace polishing? It shortens it. Most composites still benefit from a fine rubber polisher after the 9406, but the sequence takes fewer steps.

Are Busch No. 9406 burs reusable? Yes. Carbide burs are cleaned, disinfected and sterilized between patients and replaced when they dull; the Bur Sterilization Guide gives the validated steps.

Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Related: US No. 7406, US No. 8406