838 Round-End Cylinder Diamond Bur – Busch, Made in Germany

Which Busch 838 Do You Need?

Choose the grit first, then the head size; every active 838 in the collection is linked once below, and the last three digits of each Busch number are the ISO head size.

Busch 838 diamonds – FG, coarse grit

Busch No.	Pattern or size
6838 012	ISO size 012 (1.2 mm) · coarse grit, green ring · FG · pack of 6

Busch 838 diamonds – FG, medium grit

Busch No.	Pattern or size
838 008	ISO size 008 (0.8 mm) · medium grit · FG · pack of 6
838 010	ISO size 010 (1.0 mm) · medium grit · FG · pack of 6
838 012	ISO size 012 (1.2 mm) · medium grit · FG · pack of 6

Busch 838 diamonds – FG, fine grit

Busch No.	Pattern or size
8838 012	ISO size 012 (1.2 mm) · fine grit, red ring · FG · pack of 2

Busch 838 diamonds – Micro Prep (MI), FG

Busch No.	Pattern or size
MI 838 007	Micro Prep cylinder round · ISO size 007 (0.7 mm) · medium grit · FG · pack of 6
MI 8838 007	Micro Prep cylinder round · ISO size 007 (0.7 mm) · fine grit, red ring · FG · 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 838 you need:

• Coarse (green ring): Busch No. 6838 for rapid reduction
• Medium (standard): Busch No. 838 for everyday preparation
• Fine (red ring): Busch No. 8838 for refining margins and surfaces

Sizes and Shanks

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

• 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

• Chamfer margins: producing a uniform chamfer finish line on crown preparations.
• Axial reduction: parallel axial walls with a rounded gingival floor.
• Onlays and partial coverage: rounded internal angles that reduce stress in ceramic restorations.

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: 880 Round-End Cylinder Diamond Bur, 881 Round-End Cylinder Diamond Bur, 882 Round-End Cylinder Diamond Bur, Micro Prep Diamond Burs, and Busch Cylinder Round 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 838 come in? We carry the 838 in head sizes 008 (0.8 mm), 010 (1.0 mm) and 012 (1.2 mm). The Micro Prep versions (MI 838 and MI 8838) come in size 007 (0.7 mm).

What do the numbers in front of 838 mean? They indicate grit: 6838 is coarse, 838 with no prefix is medium and 8838 is fine.

Which handpiece does the 838 fit? Every 838 on this page has an FG (friction grip, 1.6 mm shank for the high-speed handpiece).

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.