Digital Captek: a New, Easier Way to Fabricate Captek Restorations
Posted Apr 11, 2013 in Technical
Captek restorations feature thin, nicely colored copings; maximize soft tissue health; and are ideal for patients with any type of predisposition to caries or perio concerns.
I've fabricated thousands of Captek units over the past decade and now there's an easier, less labor intensive way to offer Captek restorations: Digital Captek. It's no longer necessary for the technician to duplicate the die; pour a refractory model; or cut, place, press and fire the P and G Captek materials. Instead, he scans the die using a digital scanner and sends it to the Argen Digital Center where the die is printed via a 3D printer and the coping is fabricated and then shipped back to the lab for completion.
Digital Captek copings are fabricated with Captek Nano series materials which are over 33% stronger and thinner than the original Captek materials (see figure at right). All Digital Captek copings are fabricated with an internal strut design that adds further porcelain protection and precision of marginal fit through porcelain firings.
Offering Digital Captek restorations has freed up my time to focus on other aspects of the business and significantly reduced our inventory and labor costs. We're finding it's less expensive to fabricate a posterior Digital Captek restoration and about the same price to fabricate an anterior one.
A key to Rob Teachout's success with traditional Captek restorations has been adhering to basic parameters for case indication and design, and with Digital Captek restorations these basic principles still apply. Here are three tips:
One: Always keep your restoration thickness greater than 1.5mm for posterior crowns. If you don't have that much thickness, or already built your anatomy in place and realized this error, go back and create a "landing pad" or wear facet to keep your thickness within the manufacturer guidelines.
Two: On the other end of the spectrum, avoid having too much unsupported porcelain. If the doctor doesn't do a core buildup, you can use Captek's build-up kit to add occlusal rims and shelves in the Captek substructure before applying porcelain so it will be adequately supported.
Three: If A2 is the desired shade throughout, opaque the cervical in A3 and still use your A2 dentin. This small trick does wonders to bring out lifelike chroma.
We received an Rx for a simple posterior Captek restoration with a 360o hairline gold collar from Dr. Mike Melkers, FAGD, in Hanover, NH. He sent a standard, clean quadrant impression and took care to maintain resistance and retention form, yet smooth out the preparation and provide clarity on the subgingival margin placement; all of which are ideal for Captek restorations.
See photos below.
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