6 Tips for Getting the Most Out of IPS Empress
IPS Empress works with CAD/CAM technology to create dental prosthetics that are esthetically superior to prosthetics made using other materials with this technology. Three different types of blocks are used to ensure the best fit for different patient needs. Empress uses all-ceramic materials that scatter light in similar fashion to natural teeth, helping Empress prosthetics to blend in perfectly with natural teeth. The following tips can be helpful when using IPS Empress for restorations.
Use Empress Crowns for Anterior Teeth
Anterior teeth endure less stress and are more visible in the patient’s smile than posterior teeth. Since Empress restorations blend more seamlessly than other materials, these are ideal for the canines and incisors. Empress has a flexural strength of 160 MPa, which is adequate for anterior teeth but may fracture under the pressure that is regularly put on posterior teeth.
Focus on Preparation
Preparing the natural tooth by reducing it and rounding the shoulders is important. A fine diamond bur can be ran along the margins to reduce sharp line angles. A buffalo mirror should be used to verify arch form reduction.
Communicate Well with Dental Lab
Dental labs are experts when it comes to using Empress Systems to create restorations, but the patient information must be thorough to produce the best results for each case. The chosen lab should be supplied with all needed information regarding shading, tooth shape, and characterization. Any missing elements may reduce the esthetic appeal of the restoration, possibly compromising patient satisfaction.
Use Direct Bonding to Handle Severe Discoloration
Directly bonding Empress prosthetics to prepared teeth is best for handling severe discoloration. The incisal of the natural tooth should not be too close to the surface of the restoration. If the prepared tooth is too close to the surface, it may cause a line of translucency demarcation to be visible.
Observe Restorations before Cementing
Before cementing Empress restorations, it is important to do “try ins.” This allows the restorations to be viewed in different light sources, essentially giving the restorations a trial run. After “try ins” have been done, last minute changes can made to shading and shape before permanently affixing the restoration.
Have a Custom Shade Tab Made
If several teeth are being restored, it is best to ask the dental lab to make a custom shade tab. This is a piece of porcelain that matches the shade of the restorations exactly. This tab can be stored with the patient records and used to color match any future restorations that may be needed. Matching the shade without a custom shade tab can be a difficult process, with costly trial and error needed to ensure best fit.