US No. 1703 Bur – Busch Tapered Fissure Carbide, Made in Germany
The US No. 1703 is the American number for a tapered fissure bur with a 1.8 mm head (ISO size 018): a cone with a rounded end, so the walls it cuts diverge toward the occlusal and meet the floor in rounded line angles. Busch & Co. manufactures it in Germany as Busch No. 33R 018. Every US No. 1703 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
Regular price $40.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 1703 Do You Need?
The collection currently holds one US No. 1703, linked below by its Busch number.
HP (straight handpiece)1 items
| Busch No. | US No. | Material | Cut | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 33R 018 | 1703 | Carbide | Crosscut | HP | Straight handpiece: laboratory and denture work, rounded end | 6 |
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; the HP shank runs 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 work: the HP carbide No. 1703 cuts acrylic and plaster in the straight handpiece.
- Tapered walls in the laboratory: the cone cuts walls with a built-in taper in acrylic, wax and model materials, for example when trimming models or relieving acrylic.
At 1.8 mm the No. 1703 is a wide cone for bulk reduction and laboratory cutting.
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. 1701 Bur, US No. 1702 Bur, Tapered Fissure (Cone) Burs, and Dental Lab Carbide 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 sizes: US No. 1701, US No. 1702
FAQ
What is the Busch number for a US 1703 bur?
Busch No. 33R 018 in carbide (HP).
What size is a No. 1703 bur?
The No. 1703 has a 1.8 mm head diameter (ISO size 018) on a tapered fissure bur head, ISO shape 194 (cone, round end).
Are Busch No. 1703 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.
