For what reason might a dental lab add die spacers to a die?

The addition of die spacers to a die is primarily intended to ensure even distribution of cement during the dental restoration process. When a dental prosthesis, such as a crown or bridge, is being seated in the mouth, the cement must flow evenly to create a secure bond. If there isn’t sufficient space between the die and the prosthesis, the cement may not spread adequately, which can lead to a weak bond or voids where the cement fails to fill.

By incorporating die spacers, dental technicians create a controlled gap that allows the cement to be distributed uniformly when the restoration is seated, thus enhancing the overall fit and stability of the final restoration. Additionally, a uniform cement layer helps prevent issues like sensitivity or debonding that could arise from uneven cement thickness. This aspect is crucial for the longevity and success of the dental work, making the presence of die spacers an important consideration in the preparation of dental restorations.