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Komet® 4ZR Zirconia Cutter Diamond Crown Removal Bur

CRD Item Number: 190003

Manufacturer SKU: 4ZR.FG.012.A2

Vendor Komet
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The 4ZR, for really tough jobs, meets the challenges of cutting through all-ceramic crowns, especially those made of extremely hard ceramic materials such as zirconium dioxide or lithium disilicate.

Komet's 4ZR is a coarse grit, cylinder round-shaped diamond.

ZrO2 | ZR-Diamonds™

Offering a combination of strength, durability, and outstanding esthetics, all-ceramics are a popular restorative choice. All-ceramics are, however, exceptionally difficult to manage and cut with conventional diamond instruments.

ZR-Diamonds have been the premier choice for working with modern high-strength ceramics since their introduction into the dental marketplace. Unmatched in versatility and performance, ZR-Diamonds address these real, everyday challenges by providing superior results quickly and with minimal effort. Offered in a range of shapes and sizes, ZR-Diamonds provide an effective, efficient, and easy-to-use option for adjusting high-strength ceramic restorations. Other features and benefits include:

  • Permanently bonded, high-quality diamond particles
  • Densely packed diamond layer
  • Outstanding durability & extended service life
  • Optimal material-reduction capacity
  • Extensive range of shapes and sizes to meet all needs
Recommendations for Use:
  • Use a generous amount of water and light hand pressure.
  • To take full advantage of the instrument's shape and size, apply the instrument at an angle of 45 degrees to the crown.
  • Always apply sufficient coolant (at least 50 ml/min).
  • Do not exceed a maximum contact pressure of 2N.

Indications for Use

All-ceramic crown removal.

Looking for a way to easily switch to Komet burs? Download and then print a Komet Bur Conversion Card here:

Komet 4ZR cutting all-ceramic crown

Shank Type

Komet FG Shank Type

Diamond Grit Size Legend

Komet Diamond Grit Size Legend

Maximum Permissible Speed Legend



Komet Maximum Permissible Speed Guide

[MOST POPULAR] 4ZR.FG.012: 5-Pack (Item Number: 190003)

4ZR.FG.014: 5-Pack (190004)