US No. 958 Bur – Busch End Cutting Cylinder Carbide, Made in Germany

The US No. 958 is the American number for a end-cutting bur with a 1.2 mm head (ISO size 012): a cylinder with cutting blades on the end face only, so it refines a shoulder or floor without touching the axial walls. Busch & Co. manufactures it in Germany as Busch No. 207 012. Every US No. 958 on this page is a genuine Busch instrument and ships from our US warehouse.

Which US No. 958 Do You Need?

US No.	Busch No.	Material	Cut	Shank	Best for	Pack
958	207 012	Carbide	Plain-cut	FG	High-speed handpiece	2

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

Clinical Uses of the US No. 958

Shoulder finish lines: squaring and smoothing the shoulder of a crown preparation with the axial wall already established.
Gingival floors: flattening the gingival floor of a proximal box without widening it.
Margin correction: lowering a finish line by a controlled amount.

At 1.2 mm the No. 958 is an end diameter matched to shoulder widths.

Speed and Technique

Hold the bur parallel to the axial wall and apply pressure only along the long axis; the smooth sides will not cut, which is the safety feature of the design. 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 958 bur? Busch No. 207 012 in carbide (FG).

What size is a No. 958 bur? The No. 958 has a 1.2 mm head diameter (ISO size 012) on a end-cutting bur head, end-cutting cylinder (blades on the end only).

Are Busch No. 958 burs reusable? Yes. Carbide and steel 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