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DIGITAL DENTURES

2 years ago by | 8 Comments

I had an interesting visit to a company here in Scottsdale that is fabricating “digital” dentures.

The technique is based on impressions that are stitched to an interarch measurement and positioning device that lets the clinician set the position of the maxillary incisors, the vertical dimension of occlusion, and the centric relation position as determined by a single-point stylus that creates a gothic arch tracing. After records are gathered, the impressions are scanned, the interarch record device is scanned, and the two are stitched to produce a virtual mounting.

The technicians now take sets of virtual teeth and “set” the denture just as you or I would at the lab bench. Rotations, curves of Spee and Wilson, and any customization desired can be completed just as if you were working with real denture teeth and wax. Once completed, the denture bases are now milled out of a “puck” of Lucitone 99 that has been processed under intense pressure.

Check out the detail on the milled lower prior to its removal from the puck.

Notice the detailed positions created for the denture teeth. They are now cemented into the prepped areas and the denture is polished and delivered.

A single records visit, one seating visit, and adjustments as required. The company claims fewer of those are required, since the middle steps and the processing reduce the errors inherent in the “old” way of fabricating a denture.

I’m additionally intrigued by the possibility of using this within Earl Pounds’ branching technique, creating the preliminary denture for the functional impression by milling a denture base that is 1.5 mm off the tissue, milling a tissue model, then lining the denture base with Hydrocast and beginning the functional impression process. Since the denture for creating the functional impression was made using the interarch positioning device developed by AvaDent, I believe there would be fewer occlusal adjustments required in the functional impression process.

I’ll keep you posted on what I learn.

8 comments on “DIGITAL DENTURES

  1. The technology to capture the quantity of necessary information to virtually create a Digital Denture is certainly intriguing. I am curious about the component where the denture base is milled to accept the denture tooth which is eventually cemented. Denture teeth never look right if they are too short inciso-cervically and it seems as though I am always modifying the ridge lap portion of the tooth to allow for enough acrylic in an effort to work with a tooth with the appropriate width to length proportions. Accommodating for tooth modification might become even more of a factor when working with the funtional impression technique. Reduction copings for the ridge lap area might be possible, just wondering how they work with this situation.

  2. I attended Avadents half day seminar last saturday in Indianapolis. I would encourage everyone to take a chance to look at this technique. Its the first major change in fabricating a denture in a 100 years.
    The records part of the procedure is unique and there is a high need for accuracy . As they say garbage in -garbarge out. One of the attributes of the system is once its scanned iand in the system, a dupilcate can be made anytime after in 48 hours. I believed they said they have only produced 30 dentures as of that seminar, and they can only do a complete set-not upper denture against lower natural teeth. But the software for those possibilities is suppose to be available by the Chicago Mid Winter.
    With time I can see where this 2 appointment denture technique will become the standard technique for dentures.

  3. My name is Andy Jakson I’m one of the partners , if there is any questions on our system please feel free to call my cell at 716-989-1109 thanks

  4. there is no method mentioned for making protrusive and lateral records.

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