BENSHEIM, Germany – The new CEREC MC XL milling machine delivers such outstanding precision that all-ceramic crowns can now be conventionally cemented. To this end Ivoclar Vivadent has developed a new disilicate glass ceramic material (“IPS e.max CAD”). So far adhesive bonding has been the only option for all-ceramic crowns. Now dentists have no reason to prefer conventional PFM restorations. The high level of precision ( 25 µm) is a direct result of the enhanced MC XL milling system. Compared with the previous CEREC unit, the milling steps are two to four times smaller. The high-quality surface finish reduces the time needed to adapt the restoration to the tooth and mill the occlusal surface.

The CEREC MC XL deploys the tried-and-tested twin milling system – i.e. the ceramic block is machined simultaneously by two diamond burs. Each bur is powered by its own motor. Dentists who want added reliability and convenience can order the CEREC MC XL with an extra set of motors. If one of the burs should break off, the second motor set continues the milling operation without any interruption.

The high-capacity milling chamber of the CEREC MC XL can accommodate blocks up to a maximum size of 85 x 40 x 22 mm – an increase of approximately 100% compared with the previous CEREC model. This enables dentists to create four-unit long-term temporary bridges using the new VITA CAD-Temp material. No tools are required to clamp the blocks in place.

The CEREC MC XL is approximately 60% faster than the CEREC 3 model, which has been designed for single-tooth restorations. This saves time – for example, if the dentist wants to create and place several chairside restorations during a single appointment. In addition, the faster milling speed offsets the time needed to crystallize e.max CAD LT restorations (= approx. 25 minutes).

The CEREC MC XL marks a further step forward in terms of user-friendliness. The colored illumination of the milling chamber indicates the current operational status of the machine. All the operating steps are shown in plain text on the display. The CEREC MC XL is network-capable and only half as loud as its predecessor. Consumables and accessories can be stored conveniently in two drawers underneath the milling unit. The third drawer accommodates the 3 liter water tank.

Last but not least, all these new functions and improvements have been packaged in an attractively designed casing.

Sirona at IDS 2007:
Hall 10.2, Stand N/O/P, No. 10/11

Caption 1:The new Sirona CEREC MC XL milling machine for dental practices operates with such outstanding precision that dentists now have the option for the first time of using conventionally cementable all-ceramic crowns.

Caption 2:The CEREC MC XL is easy to operate. For example, no tools are required when inserting the ceramic blocks into the large-sized milling chamber.

About Sirona Dental Systems, Inc.
Recognized as one of the world's leading manufacturers of high quality dental equipment and technologies, Sirona has served equipment dealers and dentists worldwide for more than 125 years. Sirona develops, manufactures and markets a complete line of dental products, including the CAD/CAM restoration equipment (CEREC), digital and film-based intra-oral, panoramic and cephalometric X-ray imaging systems, dental treatment centers and handpieces.

SOURCE: Sirona Dental Systems, Inc.

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