US No. 698 Bur – Busch Tapered Fissure Carbide & Steel, Made in Germany
The US No. 698 is the American number for a tapered fissure bur with a 0.8 mm head (ISO size 008): a cone that narrows toward the tip, so the walls it cuts diverge toward the occlusal: the geometry crown and inlay preparations depend on. Busch & Co. manufactures it in Germany as Busch No. 33 008 and Busch No. 38 008. Every US No. 698 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
US No. 698 Busch Carbide Tapered Fissure (Cone) Bur | Busch No. 33 008 – Crosscut – HP | Pack of 6
Regular price $36.99Unit price-
Busch & Co. GmbH
US No. 698 Busch Steel Tapered Fissure (Cone) Bur | Busch No. 38 008 – Crosscut – HP | Pack of 6
Regular price $19.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 698 Do You Need?
All versions here take the HP shank, so choose by material; every active product in the collection is linked once below by its Busch number.
HP (straight handpiece)2 items
HP (2.35 mm shank, straight handpiece). See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Keep the bur parallel to the intended path of insertion so the taper of the head becomes the taper of the wall; run the HP versions at laboratory speed in the straight handpiece. 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
- Laboratory and denture work: the HP carbide 33 008 cuts tapered walls, channels and relief in acrylic, plaster and models in the straight handpiece.
- Economical soft-material cutting: the HP steel 38 006 is the economical choice for acrylics and plaster.
Chairside, the tapered crosscut 698 shape is used for crown preparation (axial reduction with built-in taper), inlay and onlay preparations with walls that diverge toward the occlusal, and cavity preparations with a flat floor and tapered walls. This collection carries it only on the HP shank for the straight handpiece; for friction-grip tapered fissure burs see Tapered Fissure (Cone) Burs.
At 0.8 mm the carbide No. 698 is a fine cone for detailed work; the steel version is Busch size 006.
The No. 698 is crosscut; its plain-cut twin in the same shape and size is the US No. 168 (Busch 23 008). Crosscut blades cut faster and clear debris; when you need a smooth wall or a finish line, follow with the plain-cut twin or a finishing bur.
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. 168 Bur, US No. 699 Bur, US No. 700 Bur, Tapered Fissure (Cone) Burs, Dental Lab Carbide Burs, and Dental Lab Steel Burs. For bur numbering and dimensions, see the Busch Bur Size Chart and the Dental Bur Glossary.
Related resources: US Bur Number Finder · Bur Comparison Chart · Speed Chart · Bur Glossary · Nearby sizes: US No. 699, US No. 700
FAQ
What is the Busch number for a US 698 bur?
Busch No. 33 008 in carbide (HP); Busch No. 38 008 in steel (HP).
What size is a No. 698 bur?
The No. 698 has a 0.8 mm head diameter (ISO size 008) on a tapered fissure bur head, ISO shape 168 (cone, flat end).
What is the difference between a No. 698 and a No. 168?
Same shape and size; one is plain-cut and the other crosscut. The No. 698 is crosscut — crosscut cuts faster and clears debris, plain-cut leaves a smoother surface.
Carbide or steel?
Tungsten carbide for enamel, dentin, composite and amalgam in the clinic; the steel No. 698 is the economical choice for acrylics, plaster and other soft materials in the laboratory.
Are Busch No. 698 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.
