Laboratory work Zir substructure CAD CAM

<–5th post  6th in a series of 17 on topic  Next post–>

The main two fabricators Prettau and Izir

Component Prosthesis design – framework with individual crowns Salinas

Zirconia substructure CAD/CAM with pressed emax crowns on multi-unit transmucosal abutments and pressed gingival ceramic by Stan Lott

emax crowns fabricated, placed on substructure and final hand waxing of gingival architecture
Use berry and rose IPS emax gingival stains

Crowns removed, case is sprued, invested, and pressed with IPS emax Zirpress gingiva 3

Crowns bonded on, except those that are covering screw holes and must cemented in after substructure screwed in

Pure Zr has CAL cylinders luted inside

Same case presented in Inside Dentistry 

Bob Cohen PMMA CAD verification bridge (CVD) looks nice

Stan Lott lab = Precision Elite

Another lab Prettau Zirkonzahn

If doing Zir framework with cut back for ceramic then a PMMA (polymethyl methacrylate) model is made for try-in and/or just for the lab to cut back on before the zir is milled.  Patient can wear this for awhile too, especially if using something like Primotec’s Premiotemp multi-layered PMMA

Can take old acrylic and Ti and duplicate to zir K-Art dental lab

Multiple firings are beneficial – Study shows 3-5 firings are ideal. Vichi JPD 2016

3D printing still needs some work before being viable.  Silva JPros 2011

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