How to Remove Cerec Crowns from the Block

How to Remove CEREC Crowns from Sprue: Expert Tips & Tricks

Introduction

When it comes to dental restoration, CEREC technology has revolutionized the way we approach treatments. This article focuses on a crucial part of the milling process, once milled in the PrimeMill – the successful removal of a CEREC crown from its sprue. We’ll provide step-by-step guidance to make this process seamless and efficient.

The Challenge of Sprue Removal

Once a crown has been milled, it is attached to the sprue. Removing the crown from this sprue can be tricky. Cutting too aggressively can damage the crown, but not cutting close enough leaves a large chunk of sprue on the crown, which requires extra time and care to remove.

The Solution: Using an IPR Disc

To simplify the process, our tip involves using an Interproximal Reduction (IPR) disc, commonly used for clear aligners like Invisalign. The thin, flat nature of these discs makes them perfect for sliding between the edge of the Cerec block and the sprue, allowing you to easily separate the two without causing damage to the crown.

The Process of Removing CEREC Crowns from Sprue

To safely remove the sprue from the crown, follow these steps:

  1. Separation: Hold the IPR disc parallel to the crown’s surface, then carefully insert it between the sprue and the crown to separate the two.
  2. Sprue Removal: Once the crown has been detached from the sprue, remove the remaining sprue using the recommended burs for the crown material.

Exceptions to the Rule: Certain Materials

Although the IPR disc is an excellent tool for sprue removal, there are exceptions. Certain crown materials provide multiple sprues. For these materials, a fissured surgical bur can be a more effective tool for sprue removal.

Conclusion

Mastering the art of sprue removal can significantly streamline the process of creating CEREC crowns, improving your efficiency and the quality of your finished products. With the use of an IPR disc and careful polishing, you can ensure that each crown you create is of the highest possible quality. Remember to stay updated with the latest tips and tricks from the CEREC community to keep enhancing your dental practice.