US No. 7686 Bur – Busch Finishing Taper Round Carbide, Made in Germany
The US No. 7686 is the American number for a round-end taper finishing bur with a 1.8 mm head (ISO size 018): a long tapered head with a rounded tip and many fine blades, for refining crown preparations and finishing composite margins. Busch & Co. manufactures it in Germany as Busch No. 375R 018. Every US No. 7686 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
US No. 7686 Busch Carbide Finishing Taper (Cone) Round Bur | Busch No. 375R 018 – FG | Pack of 2
Regular price $24.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 7686 Do You Need?
The collection currently holds one US No. 7686, linked below by its Busch number.
FG (high-speed handpiece)1 items
| Busch No. | US No. | Material | Cut | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 375R 018 | 7686 | Carbide | Finishing | FG | Crown prep refinement, composite margins | 2 |
FG (friction grip, 1.6 mm shank, high-speed). 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 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
- Crown preparation: smoothing axial walls and chamfer margins on molars after diamond reduction.
- Composite margins: finishing broad facial and proximal margins.
- Onlay and inlay preparation: refining internal walls and cavosurface margins.
At 1.8 mm the No. 7686 is the wider of Busch's two round-end taper finishers; the No. 7675 is the 1.6 mm size.
Care and Reconditioning
Busch carbide 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. 7675 Bur, Carbide and Diamond Finishing Burs, Composite Finishing Burs, and Crown and Bridge Burs. For bur numbering and dimensions, see the Busch Bur Size Chart and the Crown Preparation and Margin Bur Guide.
Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Nearby size: US No. 7675
FAQ
What is the Busch number for a US 7686 bur?
Busch No. 375R 018 in carbide, FG shank.
What size is a No. 7686 bur?
The No. 7686 has a 1.8 mm head diameter (ISO size 018) on a round-end taper finishing head, ISO shape 198, 8 mm long.
7675 or 7686?
Same shape; choose by diameter. The 7675 (1.6 mm) for anterior and premolar margins, the 7686 (1.8 mm) for molar axial walls.
Are Busch No. 7686 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.
