Advanced material properties due to optimized microstructure
CEREC Tessera blocks are an advanced lithium disilicate ceramic for the CEREC workflow that accelerate the entire manufacturing process by shortening the glaze firing time – a crown can be fired in the CEREC SpeedFire in just 4 minutes and 30 seconds. Compared to other glass ceramics, this represents a time savings in the entire manufacturing process (grinding and firing).
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. Tessera blocks are composed of a new material containing virgilite. During the firing process, new virgilite crystals are formed and embedded in a zirconia enriched glass matrix. Together, these material constituents combine to create a robustly reinforced, high-density restorative material. 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. 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 high-strength nature of CEREC Tessera blocks further provide clinical benefits via low minimal wall thickness preparation guidelines and the ability to use conventional cementation. All CEREC Tessera restorations can be fixed adhesively (for example with Prime&Bond and Calibra Ceram). Restorations with a wall thickness of 1.5 millimeters can also be conventionally cemented with a glass ionomer or hybrid glass ionomers (for example Calibra Bio).
CEREC Tessera blocks as a solution for three requirements
The first users are enthusiastic about CEREC Tessera blocks. Dr. Andrew Hall, a Key Opinion Leader who works with Dentsply Sirona and general dentist from Colorado Springs (Colorado), states, “The extremely fast matrix firing cycle is unlike anything we have seen. The time savings are tangible and really the whole process is just simple, yet the result is a robust restorative material. The combination of speed, strength and esthetics truly sets the material apart."
"With the new CEREC Tessera blocks, we have achieved three essential clinician requirements for a restorative ceramic – speed of processing, esthetics, and strength," explains Tom Leonardi, Group Vice President at Dentsply Sirona. "In this way, the overall treatment time with CEREC will be markedly shortened. This helps to further improve the cost-effectiveness of this concept and also offers real added value to patients on their way to a healthy smile."
CEREC Tessera blocks are available in the United States as of March 15, 2021 and are indicated for fully anatomical single-tooth restorations in the anterior and posterior regions, including crowns, inlays, onlays, and veneers.
Further information will be available at www.dentsplysirona.com/en/explore/restorative/cerec-tessera.html
Due to different approval and registration times, not all technologies and products are immediately available in all countries.
ABOUT DENTSPLY SIRONA
Dentsply Sirona is the world’s largest manufacturer of professional dental products and technologies, with over a century of innovation and service to the dental industry and patients worldwide. Dentsply Sirona develops, manufactures, and markets a comprehensive solutions offering including dental and oral health products as well as other consumable medical devices under a strong portfolio of world class brands. Dentsply Sirona’s products provide innovative, high-quality and effective solutions to advance patient care and deliver better and safer dental care. Dentsply Sirona’s headquarter is located in Charlotte, North Carolina. The company’s shares are listed in the United States on NASDAQ under the symbol XRAY. Visit www.dentsplysirona.com for more information about Dentsply Sirona and its products.
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