Home > Lab Services > Zirconia Print Page Email Page

AlphaDent Dental Design Zirconia CAD/CAM Frameworks

We would like to introduce you to some of the features and benefits of CAD/CAM Zirconia substructures, such as strength, reliability, aesthetics, biocompatibility and affordability. 
Be sure to visit our Document Archive. There you will find technical documents that you can download and print. The documents contain detailed clinical information related to Zirconia technology.


Unlimited Size Zirconia Substructures

The CAD/CAM system can fabricate unlimited size substructures. Think about it! 
Pictured here is a completed 14 unit case in zirconia, along with what remains of the Zirconia puck or 'blank'.
To help make such a case proceed smoothly, frameworks can also be made out of durable plastic for try-in prior to Zircon milling. 
Zirconia frameworks are incredibly strong, but cannot be soldered or rejoined, so we recommend milled plastic try-ins for long span bridgework


 No Case Limitations

By using AlphaDent Dental Design's  zirconia frameworks, you will never have to concern yourself over bridge size.
Listed below are some of the milling possibilities.

  • Single copings
  • 1x2 to 1x14 unit bridges
  • Cantilever bridges with rest support
  • Maryland bridge type design
  • Copings and bridges over titanium or zirconia implant abutments
  • Inlay bridges

Zirconia Frameworks
The Strongest CAD/CAM Zirconia - 1300 MPa

Employing the latest technology and space materials, AlphaDent Dental Design can offer you restorations with unsurpassed strength, fit and esthetics anywhere in the mouth – anterior and posterior crowns and up to 14 unit bridges. The combination of proven zirconia frameworks (with a flexural strength of 1300 MPa) and new generation veneering ceramics results in a whole new range of restorative possibilities for the patients who rely on you.


 Zeno Milling Blanks - Various Sizes & Materials
Including New Translucent Zirconia

(sometime referred to as discs, blanks and even pucks)
Large 98mm wide milling blanks are available in various material too,
including NEW Transclucent Zirconia (2009).

ZENO® Zr / ZENO® TRANSLUCENT: Zirconium dioxide
ZENO® Zr / ZENO® Zr B2: Zirconium dioxide
ZENO® Zreco / ZENO® Zreco B2: Zirconium dioxide
ZENO® Al eco Disc: Ceramic 
ZENO® NP Discs: CrCo alloy
ZENO® Ti Disc: Titanium 
ZENO® Ti pur Disc: Titanium
ZENO® PMMA A3 / B1 Disc: Acrylic (temporaries) 
ZENO® PMMA cast Discs: Plastic (for traditional PFM casting and try-in) 
ZENO® Wax Disc: Wax milling (for casting)


No Framework Wax-up and Casting
Zirconia cores and frameworks simplify the entire process.
The process is listed below.

  • Model Work: We pour and trim the model.
  • 3D Scanning: We use a laser scanner to produce a 3D computer image (computer model) 
  • Computer Design: The Computer Design Stage: The zirconia crowns and bridgework are designed by Alphadent Dental Design aided by the computer.  
  • Precision Milling: The Milling Stage: The information is sent to the milling machine to produce the zirconia crowns and bridgework
  • Sintering Stage: The Zeno Disc is milled. The work is then placed into a high temperature furnace for sintering.
  • Veneering Porelain Detail: The crown or bridge is completed and detailed with finishing porcelain, either felspathic or pressed.

Milled Plastic Frameworks Try-In
Conventional Casting Is Always An Option

Various materials are millable, including strong transparent plastic that is perfect for model and in-vitro try-in. AlphaDent advises try-in verification on all long span restorations. We can then use the same data to manufacture the framework, confident of a precision fit.
There are some cases where plastic frameworks must be segmented to fit, and the dentist can duralay the framework into position.
The plastic framework can then be confidently invested just like any wax-up and we can proceed with casting. The case can proceed as a PFM restoration. This allows for flexibility in case direction, avoiding new impressions and remakes.


Crown Prep - Zirconia Core

Even at a thickness of .4mm zirconia cores are extremely strong and can withstand pressures up to 1300 MPa. For this reason a standard PFM preparation is all that is necessary.
Brief crown prep details are:

  • Anatomical Prep Design.....restore tooth defects, cusps etc...this establishes a base for UNIFORM THICKNESS of zirconia.
  • Anterior/Posterior Prep: 1.6mm labial/lingual, 2mm incisal/occlusal
  • Margins: A distinct chamfer or rounded shoulder of 1mm minimum with standard 4 degree taper.
  • Bruxism contraindicates all-ceramic restorations

Bridge Prep - Zirconia Core

The tooth preparation for bridgework is similar to that for standard PFM crown. 

  • Framework crown/pontic connectors must be 9 sq. mm
  • Bruxism containdicates all-ceramic restorations