US No. 242 Bur – Busch Finishing Flame Carbide & Steel, Made in Germany
The US No. 242 is the American number for a flame finishing bur: a slender flame-shaped finishing head that reaches interproximal and gingival margins. Busch & Co. manufactures it in Germany as Busch No. 48, in carbide for the high-speed handpiece (48 010) and in steel for the laboratory straight handpiece (48 010, 012 and 014). Every US No. 242 on this page is a genuine Busch instrument and ships from our US warehouse.
Busch & Co. GmbH
US No. 242 Busch Carbide Finishing Flame Bur | Busch No. 48 010 – FG | Pack of 2
Regular price $23.99Unit price-
Busch & Co. GmbH
US No. 242 Busch Steel Finishing Flame Bur | Busch No. 48 010 – HP | Pack of 6
Regular price $20.99Unit price -
Busch & Co. GmbH
US No. 242 Busch Steel Finishing Flame Bur | Busch No. 48 012 – HP | Pack of 6
Regular price $20.99Unit price -
Busch & Co. GmbH
US No. 242 Busch Steel Finishing Flame Bur | Busch No. 48 014 – HP | Pack of 6
Regular price $20.99Unit price
Reference pages already linked from this collection, in one place.
Which US No. 242 Do You Need?
Choose by shank first, then by head diameter; every active product in the collection is linked once below by its Busch number.
FG (high-speed handpiece)1 items
| Busch No. | US No. | Material | Head | Shank | Best for | Pack |
|---|---|---|---|---|---|---|
| 48 010 | 242 | Carbide | 1.0 mm | FG | High-speed composite and margin finishing | 2 |
HP (straight handpiece)3 items
FG (friction grip, 1.6 mm shank, high-speed handpiece). HP (2.35 mm shank, straight handpiece). Busch applies the single US number 242 across the 48 flame line; choose by head diameter. See the Busch Bur Size Chart for head and shank dimensions.
Speed and Technique
Light pressure with water spray in the high-speed handpiece; work along the margin rather than across it. Steel HP versions run at low 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
- Anterior composite finishing: contouring and smoothing facial and lingual surfaces with the carbide FG.
- Interproximal and gingival margins: the pointed flame reaches embrasures and finish lines other shapes cannot.
- Crown margin finishing: refining chamfer and knife-edge finish lines before impressions.
- Laboratory finishing: the steel HP versions smooth acrylic denture borders, clasps and interdental areas on appliances and models.
At 1.0 mm the carbide No. 242 is a fine flame for detailed margin work; the steel sizes step up to 1.4 mm for broader laboratory surfaces.
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: Carbide Flame Finishing Burs, Busch Finishing Burs, Composite Finishing Burs, Egg-Shaped Finishing Carbide Burs, and Dental Lab Steel 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 · All Flame Burs
FAQ
What is the Busch number for a US 242 bur?
Busch No. 48 010 in carbide (FG); Busch No. 48 010, 012 and 014 in steel (HP).
What size is a No. 242 bur?
The carbide No. 242 has a 1.0 mm head (ISO size 010) on a multi-bladed flame finishing head, ISO shape 243. The steel versions run 1.0 to 1.4 mm.
Carbide or steel?
Tungsten carbide for composite, enamel and margins in the clinic; the steel No. 242 is the economical choice for acrylics and plaster in the laboratory.
Looking for other flame sizes in carbide?
The 48 series continues at 0.9, 1.2 and 1.4 mm, plus fine and ultra-fine versions, in our Carbide Flame Finishing Burs collection.
Are Busch No. 242 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.
