Arum 4X-450 Compatible Milling Burs

Arum 4X-450 Compatible Dental Milling Burs

This page covers dental milling burs that match OEM specifications for the Arum 4X-450. Materials supported are zirconia, glass ceramic, PMMA, wax and metal on selected models, run in wet and dry workflows. Mounting uses the 6 mm shank typical on 5X-series so swapping from OEM burs requires no machine reconfiguration.

What's in the tool family

• Heavy roughing burs for block reduction
• Intermediate burs for contour milling
• Fine finishing burs for margin integrity and occlusal detail
• All cut to the Arum 4X-450 tool-changer shank tolerance

When to replace

Replace burs when you start seeing fuzzy margins, white-line chipping at incisal edges, or an increase in milling time at unchanged feed and speed. All three are signs of cutting-edge wear rather than machine fault. A good habit is to photograph a fresh bur's tip under magnification and compare monthly - wear is obvious at 20x.

Before you order

Check three things on the OEM bur you are replacing: shank diameter, overall length, and tip diameter. These three specs together identify the correct aftermarket bur 95% of the time. If the spec sheet on a product page does not list what you need, contact us with the OEM part number before ordering.

Compatibility

CADBURS manufactures aftermarket dental milling burs for the Arum 4X-450. We are not affiliated with Arum Dentistry; Arum Dentistry is a trademark of its respective owner and is referenced here solely to describe machine compatibility.