US No. 333 Bur – Busch Pear Carbide, Made in Germany
The US No. 333 is the American number for a pear bur with a 1.4 mm head (ISO size 014): a rounded, slightly tapered head that cuts a preparation with rounded internal line angles and no sharp corners. Busch & Co. manufactures it in Germany as Busch No. 7 014 and Busch No. 25R 014. Every US No. 333 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
US No. 333 Busch Carbide Pear Bur | Busch No. 7 014 – FG | Pack of 6
Regular price $36.99Unit price-
Busch & Co. GmbH
US No. 333L Busch Carbide Pear Long Bur | Busch No. 25R 014 – FG | Pack of 6
Regular price $40.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 333 Do You Need?
Both are FG carbide; choose by head length. Every active product in the collection is linked once below by its Busch number.
FG (high-speed handpiece)2 items
FG (friction grip, 1.6 mm shank, high-speed handpiece). See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Use in the high-speed handpiece with water spray, entering with the tip and shaping with the sides in short strokes; the rounded form does the finishing of the internal angles for you. 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
- Conservative Class I and Class II preparations: the pear outline removes only what is needed and leaves rounded internal angles that suit composite and amalgam alike.
- Minimally invasive access: opening a fissure or a small lesion without extending the preparation beyond the defect.
- Refining internal form: smoothing line angles and slight undercuts in an existing preparation.
At 1.4 mm the No. 333 is a larger pear for wider preparations.
The 333L (Busch 25R 014) carries a longer cutting head for deeper boxes and taller walls.
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. 331 Bur, US No. 332 Bur, Pear Burs, Inverted Cone Burs, and 830 Pear Diamond 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. 331, US No. 332
FAQ
What is the Busch number for a US 333 bur?
Busch No. 7 014 in carbide (FG). The 333L is Busch 25R 014.
What size is a No. 333 bur?
The No. 333 has a 1.4 mm head diameter (ISO size 014) on a pear bur head, ISO shape 232 (pear).
What do the letters after No. 333 mean?
The 333L (Busch 25R 014) carries a longer cutting head for deeper boxes and taller walls.
Are Busch No. 333 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.
