The 4-axis milling machine for wet machining for restorations in mere minutes.
We developed the Z4 for same-day dentistry applications. Its futuristic housing and intuitive, easy-to-use operating controls conceal a high-precision milling and grinding machine that shares the “DNA” of the best laboratory machines.
Axes
Discs
Block
Tools
“The Z4 by vhf gives me the accuracy and flexibility in materials I need to accommodate more in-office workflows than we have ever seen before. Its user-friendliness and integrated compressor let us get up and mill in no time. All with incredible precision.”
“The Z4 fits perfectly into the digital workflow, because it optimally meets the requirements for a same-day dentistry solution. It is important that intraoral scanners, design software and milling machines are seamlessly integrated.”
“I have to tell you that with the Z4 you finally got everything perfect. The system is gorgeous and completely self-contained. I can’t thank you enough for letting me work with your system and I welcome the opportunity to show off and highlight this incredible vhf Z4 system.”
“The Z4 is an easy system, and the ROI is huge, it’s ideal for both general dentists and prosthodontists who want to deliver same-day restorative care that patients appreciate.”
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This video shows the most important features of the Z4 by vhf. See for yourself why dental experts all over the world call this machine “The Future of Digital Dentistry”.
When it comes to wet machining blocks, the Z4 sets unprecedented quality standards. Fabricate glass-ceramic, PMMA, zirconia and composite restorations in mere minutes and finish highly accurate prefabricated titanium abutments.
No external compressed air supply necessary. Only requires clean water. The block is clamped in two seconds. With the Z4, you can work with unparalleled efficiency.
The digital workflow makes it happen: you and your patients can benefit from more pleasant treatments with first-class restorations in just one session. The Z4 is an investment that will pay off for you: high-quality restorations with maximum independence. The number of machinable block materials constantly increases as well as the number of scanners and CAD software packages that are validated with the Z4.
From the intraoral scanner to the milling machine, users work with a single interface and therefore only need to familiarize themselves with one software package. This is the convenience of completely integrated workflows!
One user interface and everything in your practice: scanning, designing, milling.
Design in your practice or your favourite laboratory for maximum indication and material freedom.
* Material and indication availability may vary by CAD provider. Full range of indications and materials available in STL workflow.
A scientific study at the University of Washington proved that using the Z4, users can drill screw-access channels for hybrid implant restorations into ceramic blocks with no signif-icant difference in flexural strength compared to factory-fabricated materials, known as meso blocks.
These blocks are significantly more expensive, and the laboratory design method requires a more sophisticated CAD process. Thus, processing standard blocks with the Z4 means less cost for material and less material inventory necessary.
Jack M. Keesler, DDS, MSD. Effect of milling screw-access channels on flexural strength of CAD/CAM ceramic materials. MSD Master’s Thesis, University of Washington, 2019.
| composites | plastics | glass ceramics | zirconia |
| titanium | CoCr |
| crown/bridge | inlay/onlay | abutment | telescopic crown |
| model plate | model cast | occlusal splint | model tooth |
| implant bar | veneer | drilling template | denture |
| secondary crown | screw-retained bridge | protrusion splint |
GENERAL
Wet machining
Glass ceramics, titanium, zirconia, composites, plastic materials
– Blocks up to 45 × 20 × 20 mm
Crowns, bridges, fully anatomical crowns and bridges, inlays, onlays, abutments, veneers, table tops
BASE SYSTEM
Machine bed made of solid cast aluminum body
Thick-walled TSG injection molding, white high-gloss lacquer finish with workspace flap and combined drawer for cooling liquid/tool inserts
4
Precision ball screws, rolled version · motors with resolution < 1 μm · ground precision steel guides · repetition accuracy ± 0.003 mm
Rotary axis with high concentricity · rotation angle: 200°
4-axis simultaneous control electronics with continuous path progression and dynamic pre-calculation · hardware-based real-time operating system with standardized command set · FPGA-integrated processor · updateable hardware · real-time path calculation via dedicated hardware engines in the FPGA · four-quadrant control of the motors for particularly smooth running · multiple analogue and digital I/Os for controlling the peripherals · integrated inverter for synchronous and asynchronous motors, electronic gate detection · Ethernet and USB interface
Internal compressed air supply with integrated sound insulation
RGB LED lighting with status display
Integrated in the working chamber for easy remote support and possibility of internal recording
Capacitive 5-inch touchscreen display fully integrated into the front flap for local operation of the machine.
SPINDLE
High-frequency spindle, asynchronous with pneumatic tool clamping · sealing air to prevent debris from entering · automatic cone cleaning
Up to 100,000 rpm
Peak power (Pmax): 340 watts · nominal power (S6): 220 watts · continuous power (S1): 170 watts
Hybrid ceramic ball bearing · concentricity deviation at inner cone < 2 μm
Stainless steel collet with ceramic coating for tools with a shank diameter of 3 mm and max. 35 mm total length
AUTOMATION
Tool magazine for 6 tools, removable and material-coded · Length measurement and tool monitoring control via precision measuring key
The integrated DIRECTBLOCK Technology automatically takes over the clamping and releasing of the block or abutment holder to be machined
Motorized opening and closing of the work chamber flap, movement parallel to the chassis
Electric ejector for tool and cooling liquid tank drawer
PROCESSING MODES
Multiple liquid nozzles on the spindle · Integrated cooling liquid (2 liters) with active carbon filter system · flow-sensor for monitoring the liquid supply · PUREWATER: no grinding additives except for titanium processing
CONNECTION REQUIREMENTS
No compressed air required
100 – 240 volts · 50/60 Hz, 750 watts
10/100/1000 Mbit/s BaseT port (auto-sensing) Ethernet via RJ-45 socket
ENVIRONMENTAL CONDITIONS
Between 10 °C and 35 °C
Max. 80 % (relative), non-condensing
APPROVALS
CE, VDE
UL, FCC (according to ANSI/UL 61010-1)
DIMENSIONS & WEIGHTS
471 × 522 × 507 mm with closed flap and drawer
471 × 737 × 608 mm with open flap and drawer
400 × 305 mm
66 kg
SCOPE OF DELIVERY
DENTALCAM software included
Abutment holder devices for various systems (optional)
Spindle service set · calibration set incl. micrometer · brush for nozzle plate · cleaning brush · microfiber cloth · spare fine filter · active carbon pellets · Tec Powder (3 bags) · spare wiper for viewing window · tool magazine inserts (5 pieces) · torque wrench · 2 Allen wrenches · drill bit (tool positions) · measuring pin · power cable · Ethernet network cable · carrying aid for transporting the machine · operating instructions
* required field