390 Bullet Diamond Bur – Busch, Made in Germany

Which Busch 390 Do You Need?

Choose the shank and grit first, then the head size; every active 390 in the collection is linked once below, and the last three digits of each Busch number are the ISO head size.

Busch 390 diamonds – FG, medium grit

Busch No.	Pattern or size
390 016	ISO size 016 (1.6 mm) · medium grit · FG · pack of 6
390 018	ISO size 018 (1.8 mm) · medium grit · FG · pack of 6

Busch 390 diamonds – FG, fine and extra fine grit

Busch No.	Pattern or size
8390 016	ISO size 016 (1.6 mm) · fine grit, red ring · FG · pack of 2
8390 018	ISO size 018 (1.8 mm) · fine grit, red ring · FG · pack of 2
390EF 016	ISO size 016 (1.6 mm) · extra fine grit, yellow ring · FG · pack of 2
390EF 018	ISO size 018 (1.8 mm) · extra fine grit, yellow ring · FG · pack of 2

Busch 390 diamonds – HP (straight handpiece)

Busch No.	Pattern or size
390 018	ISO size 018 (1.8 mm) · medium grit · HP · pack of 2
8390 018	ISO size 018 (1.8 mm) · fine grit, red ring · HP · pack of 2
390EF 018	ISO size 018 (1.8 mm) · extra fine grit, yellow ring · HP · pack of 2

Choosing a Grit

Busch marks grit with a colored ring and a prefix on the figure number, so you can order the exact 390 you need:

• Medium (standard): Busch No. 390 for everyday preparation
• Fine (red ring): Busch No. 8390 for refining margins and surfaces
• Extra Fine (yellow ring): Busch No. 390EF for final finishing and polishing preparation

Sizes and Shanks

The three-digit size code is the head diameter in tenths of a millimeter (for example, 012 = 1.2 mm).

• HP (2.35 mm shank for the straight handpiece)
• FG (friction grip, 1.6 mm shank for the high-speed handpiece)

See the Busch Bur Size Chart for full dimensions and the Dental Bur Speed Chart for maximum recommended speeds.

Made in Germany by Busch & Co.

Busch & Co. has manufactured rotary instruments in Engelskirchen, Germany since 1905. Each diamond is produced under ISO 13485-certified quality management on a concentric shank for smooth, chatter-free cutting, and is covered by our Busch warranty.

Clinical Use

• Occlusal reduction: rounded occlusal reduction that follows cusp anatomy.
• Lingual contouring: shaping lingual surfaces of anterior teeth.
• Finishing: smoothing and contouring restorations in the finer grits.

Care and Reconditioning

Busch rotary instruments are reusable: clean, disinfect and sterilize them between patients according to the manufacturer’s instructions, and replace a bur once it dulls or shows damage. Our Dental Bur Reprocessing & Sterilization Guide walks through the workflow for carbide, diamond and steel instruments.

Compare With

Related Busch collections: 379 Football Diamond Bur, 368 Football Diamond Bur, 899 Occlusal Contouring Diamond Bur, Football (Egg) Burs & Diamonds, and Crown and Bridge Dental Burs. For numbering, sizes and speeds, see the US Bur Number Finder, the Color Coding & ISO Guide and the Dental Bur Speed Chart.

Reference resources: Bur Comparison Chart · Size Chart · Bur Glossary · All Busch Diamond Burs

FAQ

What sizes does the Busch 390 come in? We carry the 390 in head sizes 016 (1.6 mm) and 018 (1.8 mm).

What do the numbers in front of 390 mean? They indicate grit: 390 with no prefix is medium, 8390 is fine and 390EF is extra fine.

Should I order FG or HP? FG fits the high-speed handpiece used for most clinical preparation. HP fits the straight handpiece used for laboratory work and chairside adjustments.

Can Busch diamonds be reused? Yes. Clean, disinfect and sterilize between patients following the Bur Sterilization Guide, and replace the bur when cutting efficiency drops.