Category: Desktop Scanners

A recent study published in the Journal of Advanced Prosthodotics compared many Intra-oral scanners and used the Medit desktop scanner as the reference frame and benchmark for accuracy. Unfortunately the Medit Intra-Oral Scanner was not commercially available at the time of the study.

Our position at CAD-Ray is that any scanner can be accurate and inaccurate based on how it is utilized. Furthermore, once you capture accurate data, by the time you design a restoration and send it to production, the printing or milling machine has no idea where the scan came from and generally can produce restorations to the level of accuracy the resolution the scanners provide.

Keep in mind, there are dozens of ways an operator can introduce errors in imaging.

Another case delivered with the triple tray technique and the MeditT500 desktop scanner. The H&H technique was used to capture the margins and bite and there were no adjustments made to the contacts or the occlusion after delivery of the crown.

The scan, design, and fabrication was done by Burbank Dental Lab

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triple tray

If you are risk averse and want to take your first step into digital dentistry without altering a single thing you do in your practice, consider a desktop scanner, like the Medit T500.  Combine the traditional H&H technique in a triple tray and then place the material on the scanner.  In minutes you can capture the prep, the opposing, and the proper occlusion.  It is incredibly accurate because you don’t pour up the impression with stone where you can introduce errors.

Here’s a video of how to take an H&H impression from YouTube by Dr. Marty Jablow:

In this video you can see the set up to scan a triple tray H&H impression. Just mount the tray on the table and insert into the imaging box. With a couple of clicks, the software automatically rotates the table so it can image everything captured by the PVS material:

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Watch hour you can see how the table move so that the camera can pick up images well beyond the flash left by the PVS material

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Once the impression taking is finished, the models are rendered and you can proceed with the design. You can see in this video how readily visible the margins are and how properly the models are articulated together. The fact that you don’t have to pour up the impression material with stone, you are not likely to introduce errors in topography of the models.

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This is a very simple way to digitize alginate impressions and triple trays in your office and not waste time pouring them up. With a click of a button you can send the data to a lab or design and fabricate the restoration in your office.

Here’s is the stl from the scan that was imported into a software called meshmixer to visualize the three dimensional model and the the detail

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click on this image to download the stl and see for yourself!