For more information, go to /en/explore/restorative/cerec-tessera.html. Andrew Hall, a general dentist from Colorado Springs, Colorado, who works with Dentsply Sirona.ĬEREC Tessera blocks are now available in the United States and are indicated for fully anatomical single-tooth restorations in the anterior and posterior regions, including crowns, inlays, onlays, and veneers. The time savings are tangible and really the whole process is just simple, yet the result is a robust restorative material,” says Dr. “The extremely fast matrix firing cycle is unlike anything we have seen. Restorations with a wall thickness of 1.5 mm can also be conventionally cemented with a glass ionomer or hybrid glass ionomers, such as the company’s Calibra Bio cement. All CEREC Tessera restorations can be fixed adhesively (for example with Dentsply Sirona’s Prime&Bond and Calibra Ceram). CEREC Tessera Restorations are matrix-fired in just 4 minutes 30 seconds using the CEREC SpeedFire Furnace for increased efficiency. Abrasion studies at the University of Regensburg, Germany, show no difference in abrasion from the material itself and from the tooth-like antagonist compared to emax. CEREC Tessera Advanced Lithium Disilicate is a restorative material specifically designed to fabricate restorations using an in-office CAD/CAM workflow. The high-strength nature of the blocks further provide clinical benefits via low minimal wall thickness preparation guidelines and the ability to use conventional cementation. CEREC Tessera is not harder than e.max and is generally smooth due to the high glass content relative to emax. The same microcrystal composition (lithium disilicate and virgilite) of CEREC Tessera blocks that is responsible for the material’s high biaxial and flexural strength also contributes to its highly esthetic and dynamic light refraction, transmission, and absorptive properties that mimic the visual vitality of natural dentition. The dense interwoven crystal composition of CEREC Tessera blocks is key to their high strength and helps suppress the presence of microcracks and subsequent crack propagation. Together, these material constituents combine to create a robustly reinforced, high-density restorative material. During the firing process, new virgilite crystals are formed and embedded in a zirconia enriched glass matrix. Tessera blocks are composed of a new material containing virgilite. The fast firing time is mainly made possible by the special and new composition of the ceramic made of lithium disilicate and virgilite, a lithium aluminum silicate, according to Dentsply Sirona.
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