US No. 8406 Bur – Busch Fine Finishing Football (Egg) Carbide, Made in Germany
The US No. 8406 is the American number for a fine egg (football) finishing bur with a 1.8 mm head (ISO size 018): the 20-blade class version of the No. 7406, with closer-spaced blades that leave a smoother surface on composite. Busch & Co. manufactures it in Germany as Busch No. 44E-F 018, yellow ring. Every US No. 8406 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
Regular price $25.99Unit price-
Busch & Co. GmbH
Regular price $25.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 8406 Do You Need?
Both versions share the same fine-cut head; choose by shank. Every active product in the collection is linked once below by its Busch number.
FG (high-speed handpiece)1 items
| Busch No. | US No. | Material | Cut | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 44E-F 018 | 8406 | Carbide | Fine finishing | FG | High-speed occlusal finishing | 2 |
RA (slow-speed contra-angle)1 items
| Busch No. | US No. | Material | Cut | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 44E-F 018 | 8406 | Carbide | Fine finishing | RA | Slow-speed contra-angle | 2 |
FG (friction grip, 1.6 mm shank, high-speed). RA (latch, 2.35 mm shank, contra-angle). See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Finishing burs work at reduced pressure: use them with water spray in the contra-angle or high-speed handpiece and let the blade count produce the surface; heavy pressure only dulls them. 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 13485-certified quality management and covered by our Busch warranty.
Clinical Use
- Occlusal smoothing: the pass after contouring with the No. 7406, removing blade marks from cusp inclines and fossae.
- Lingual finishing: refining anterior lingual surfaces before polishing.
- Pre-polish: preparing composite for a two-step polisher.
Sequence: contour with the No. 7406, smooth with the No. 8406, and finish with the 30-blade No. 9406 where a pre-polish surface is wanted.
Care and Reconditioning
Busch carbide and steel burs are reusable: clean, disinfect and sterilize them between patients following the manufacturer instructions and replace them once they dull. Our Dental Bur Reprocessing & Sterilization Guide gives the steps for Busch rotary instruments.
Compare With
Related Busch collections: US No. 7406 Bur, US No. 9406 Bur, Football (Egg) Burs, Egg-Shaped Finishing Carbide Burs, Composite Finishing Burs, and Busch Finishing Burs. For bur numbering, dimensions and ring colors, see the Busch Bur Size Chart and the Dental Bur Color Coding and ISO Guide.
Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Related: US No. 7406, US No. 9406
FAQ
What is the Busch number for a US 8406 bur?
Busch No. 44E-F 018 in carbide, yellow ring, on FG or RA shanks.
What size is a No. 8406 bur?
The No. 8406 has a 1.8 mm head diameter (ISO size 018) on an egg-shaped finishing head, ISO shape 277, with a fine blade count.
7406, 8406 or 9406?
Standard for contouring, fine for smoothing, ultra fine for pre-polish. Same shape and size, increasing blade count.
Are Busch No. 8406 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.
