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Load image into Gallery viewer, Komet 4ZR Zirconia Crown Cutter Diamond Bur
Load image into Gallery viewer, Komet 4ZR.FG.012 Diamond Bur
Load image into Gallery viewer, Komet 4ZR.FG.014 Diamond Bur

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)