2-in-1 Pre-sintered Zirconia Grinding and Polishing Bur

Product features

• Grit: Medium + Fine, 2-in-1 grinding and polishing

• Shank: HP, 2.35 mm

• Application: Pre-sintered zirconia grinding and polishing.

Product overview

The Smilezir 2-in-1 Pre-sintered Zirconia Grinding and Polishing Bur is designed for shaping and finishing pre-sintered and green-state zirconia restorations in dental laboratories. Featuring an innovative dual-grit abrasive design, this rotary tool combines medium-coarse grinding and fine polishing zones in a single bur, helping streamline the finishing process without frequent tool changes.

The grey abrasive segment is used for contouring and material removal, while the white fine-grit segment supports surface smoothing and finishing before final sintering. This practical 2-in-1 design helps dental technicians work efficiently while handling the delicate structure of pre-sintered zirconia.

Suitable for zirconia crowns, bridges, inlays, onlays and other dental laboratory restorations, this bur is a convenient choice for CAD/CAM zirconia finishing workflows.

Product specifications

• Product type: 2-in-1 zirconia grinding and polishing bur

• Application: Pre-sintered zirconia and green-state zirconia

• Grit system: Medium-coarse (grey) + fine (white)

• Shank type: HP

• Shank diameter: 2.35 mm

• Recommended speed: 15,000–20,000 RPM

• Usage: Grinding, contouring, smoothing and pre-sintering finishing

• Application areas: Crowns, bridges, inlays, onlays and other zirconia restorations

2-step dual-grit workflow

Step 1 — Grinding and shaping

Grey abrasive segment | Medium-coarse grit

Use the grey abrasive section to remove excess material, adjust contours and refine the shape of pre-sintered zirconia restorations. Its grinding surface supports controlled shaping during the green-state finishing process.

Step 2 — Polishing and finishing

White abrasive segment | Fine grit

Use the white fine-grit section to smooth the surface and refine the restoration after shaping. This step helps prepare the zirconia workpiece for final sintering and may reduce the need for additional pre-sintering finishing steps.

Key product features

1. Dual-grit 2-in-1 design

Combines medium-coarse grinding and fine polishing zones in one rotary bur, reducing the need to switch tools between shaping and finishing.

2. Designed for pre-sintered zirconia

Developed for dental laboratory workflows involving green-state zirconia, where controlled material removal is important to help minimize chipping and damage.

3. Grey and white grit identification

The two abrasive zones are easy to distinguish visually, making it convenient to identify the grinding and finishing sections during use.

4. Efficient dental laboratory workflow

The integrated grinding and polishing design helps simplify zirconia contouring and surface finishing, supporting a more streamlined CAD/CAM restoration process.

5. Versatile zirconia restoration finishing

Suitable for shaping and finishing zirconia crowns, bridges, inlays, onlays and other compatible restorations before final sintering.

Recommended use

• Use with compatible HP handpieces accepting a 2.35 mm shank.

• Recommended operating speed: 15,000–20,000 RPM, subject to the manufacturer's instructions and the restoration material.

• Apply controlled pressure and avoid excessive heat buildup.

• Follow the zirconia manufacturer's instructions for green-state finishing and final sintering.

• Always wear appropriate eye protection and use suitable dust extraction when grinding dental materials.

Why choose Smilezir zirconia polishing burs?

Smilezir provides practical dental laboratory tools designed to support efficient zirconia restoration workflows. This 2-in-1 grinding and polishing bur combines two finishing functions in one tool, helping dental technicians simplify shaping and surface preparation before final sintering.