3Shape Trios Scanner: How to Scan an Upper and Lower Denture and Bite

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We’re going to show the process of scanning a full upper and lower denture. This particular denture

Is pretty shiny on the pallet, which is typical and the intaglio is a little bit rough. The shiny part of the pallet has always been a challenge, but we’re going to show the process of scanning first the upper, then we’ll scan the lower and then we’ll scan the bite using the trio scanner. The first step is to set up the patient and we recommend using scan only. There may be others, other processes out there and if you find that setting the patient up in a different way is fine using removables or something else, but we just click scan only and then the wizard pops up and then we click go to the scan page. And in this case we are going to scan the upper first and we’re going to show a little bit of scanning the denture physically with the scanner. But mostly we’re going to just show the digital process as you watch the screen for the pattern of scanning.

In this video we’re going to show a little different technique of scanning. Most of the time you’ll hear or see in literature that you scan the teeth first, kind of like crown bridge and then you roll over to the intaglio. But the scanner myself, I have tried that many times with different scanners over the years and have come up short. I always have a tough time rolling over to the intaglio. So instead we have tried this technique a few times and it seems to always work and that’s scan the in TAGO first and not a hundred percent sure why it works this way. But I think part of it is it can get a good registration by scanning on the intaglio due to the rough surface. It’s just rougher. It’s not highly polished like the P side. So you can see how quickly this scan went and we’re going to just get some little details of the borders here and that way if the borders are defined and the scan was very clear and registered, what I mean to say is that often when you scan a denture, the left and right side of the denture do not register and you get a little bit of a break in between.

And you’ll always notice that on the distal P, and that’s a failure. Don’t send that to the laboratory because then we would really have to fudge something that’s not going to fit. You’d end up doing a reline. So identify the borders. You can go 360 degrees around the border if you’d like, or in this case just the periphery there and not the P seal. And then come around and scan the labial flange. Now occasionally you’ll scan part of your thumb or a finger, the blue glove, whatever color, and that’s okay. The scanner will eliminate that. But notice here now we’re going back to a regular crown and bridge type scan and it was very simple to flip over to this side of the denture. So we’re going to go, I’m going to speed it up a little bit here and we’ll be back in a minute with the voice. This particular denture has some radiopaque markers on the tongue side, but the area where the markers are, it’s, it’s always simple to scan that part. It’s always the shiny pallet that’s a problem. So now we’ve finished the scan and normally the P part is the most challenging, the shiny part. And you can see it did pick it up and I think part of that is because it was intaglio side that was scanned so well. So now we’re going to flip over to scanning the mandibular denture.

And with the lower, just found that the ability to scan the teeth first works. Now this particular denture is not terribly highly polished. It’s a little bit rough. This is a printed denture and it was not finished. If you find that you cannot scan the lower left to right and then flip over, you can scan an intaglio first in the same process as the upper, but without the shiny pallet. The lower seems to seems to be able to be acquired better than the upper. It’s critical that you don’t leave any holes, in other words, blue spots. And also notice that when we’re scanning the intaglio that you’re scanning the buccal flange, but then you’re also capturing the lingual while you’re scanning the buccal flange. Let me show that again real quick in a repeat. Notice that as you’re scanning the facial, you’re also scanning the lingual flange of an intaglio capturing both at the same time. And we’ll just speed up this part so you can follow along and see just the pattern of the scanning. This is about 300 times the speed. The lower is now finished. And notice that it’s a very clean scan. No holes. Just be sure that there’s no holes, no blue colors, or I don’t know how you have your settings, but no colors because otherwise we have to fix those in a third party software and that can lead to inaccuracy.

And then finally, bring the two dentures together and scan the bite. I found that scanning bites on dentures is very quick. All right, so that was very quick, and I always scan a little bit of extra just in case it doesn’t come over together. We can manually put the upper and lower together using a larger bite. Small bites are kind of tricky. Okay, now the upper and lower scanned together in a bite. And if you send us this, we can make you a brand new denture. If you performed a reline impression scan that instead of this scan, the reline impression, we can send you a brand new denture that fits wonderfully. So this is digital impressions of full dentures.

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