/diy/ - Do It Yourself

>>810965
The best DIY laser scanner, which is DAVID-Laserscanner, still doesn't have good enough resolution for this process.

If someone designed a DIY "destructive scanner", that would be idea. This is how they do it in professional dental tech- a destructive scanner shaves the model layer by layer, then scans the flat surface after it's shaved.

>>810897
Nope, it theoretically works on crowded teeth too. My 3D solution for the teeth movement does involve progressive de-crowding as it moves them into position.

>>810919
Thanks! It feels pretty amazing to have this thing on my teeth. I can feel it working. There's outward pressure on CI-r and inward pressure on LI-r, and no pressure on any other teeth- just like I intended (see >>810774).

I really hope this turns out well. I I'm going to do an intermediate casting of my teeth at the 6 week mark to check progress.

I've decided to whiten my teeth at the same time as I'm moving them with some 32% carbamide peroxide gel. Hopefully there will be a huge change for the better here.

The plastic loaded, about to be heated by the Formech. You can see why I needed that adapter.

If one plans to use an expensive method of 3D printing for even higher accuracy, using a riser to make the 3d print tall enough to be vacuum formed is important. I might add a pull-tab to the riser bottom to make removing it from the vacuum mold even easier.

I think Shapeways would be great for this kind of project. They have very fine resolution prints now. Another option could be using DLP resin printing. I want to build one of those printers in the future.

Some research data.

This work is mostly based on Contemporary Orthodontics 5th Edition by William Proffit DDS, PhD, and Orthodontics at a Glance by Gill Daljit.

Gonna keep dumping all the rest of my pictures, some you've seen before. Just to have them in one place.

Bonus utility from these aligners:

They double as perfectly formed, low profile nightguards, which protect me from grinding my teeth at night. Also, they can be used as well-fitting whitening trays.

Does anyone have any experience with DIY teeth whitening? Compounds to use vs which ones to avoid?

>>810769
Assuming this /works/, I will have saved at least 3000 dollars. The average cost for a straightforward case of Invisalign is 3-4k. I've spend 'bout $60 all told, so practically nothing. Of course, I have access to a $30k Stratasys Dimension 1200es, the Formech, a $3k 3D laser scanner, and a shop full of machine tools.

In terms of time, I've probably spent 50 hours on this project.

o7

It all started with this... the original algniate mold.

I 3d printed an impression tray, since I didn't have one on hand. All these files will be open source.

The aligner positive on the Formech 300XQ. I needed to manufacture a little adapter, since the retainer material is only 5x5", way too small to fit in the machine's vacuum seal. It's just two pieces of sheet steel with some weather stripping on one side.

It took a lot of experimentation and failure, but I found that 20 seconds at maximum heat is the perfect setting for heating the thermoplastic material.

You can see the riser here too, the off-white color plastic (I made this on my Reprap, because it doesn't need to be super precise).

The aligner positive on the Formech 300XQ. I needed to manufacture a little adapter, since the retainer material is only 5x5", way too small to fit in the machine's vacuum seal. It's just two pieces of sheet steel with some weather stripping on one side.

It took a lot of experimentation and failure, but I found that 20 seconds at maximum heat is the perfect setting for heating the thermoplastic material.

You can see the riser here too, the off-white color plastic (I made this on my Reprap, because it doesn't need to be super precise).

The riser and the 3D printed positives, labeled of course.

The aligner I'm wearing is very comfortable. It fits perfectly. I used a dremel tool to buff down all corners and edges.

I can feel the pressure on the teeth that need to move, but the rest of the teeth feel no pressure. Exactly what I hoped would happen! I can easily forget the aligner is in my mouth, and as you can see from the OP, it's basically invisible except for a little extra shininess.

Here's what they look like right out of the vacuum forming machine.

A improved the production process- now, each 3d printed positive sits on (and mates to) a half-inch riser. It's in a slightly different color of plastic. You can see the seam between them.

The riser is reused, which makes 3d printing the positive at least 100% faster (since they don't need to be as tall). Also, it provides a convenient gap that I can cut along with an x-acto knife when I'm removing the 3d print from the aligner. Without it, the aligner gets trapped inside the vacuum form.

Stage 3 is a go. I'm currently wearing aligner 1, and the rest of the aligners are manufactured.

I'm not going to update again until the end of the process, unless something goes wrong, so I'll just use this thread to answer any questions.

>>805934

If you're serious, lets talk, send me a message at printestry@gmail.com.

However-

1) I don't know if this works yet. I'll know by the end of the summer.
2) It can only possibly do what invisalign does- that is, this technique isn't capable of rotating or translating (bodily movement) teeth, only tilting them. You need bracket braces, which are bonded to the tooth, for bodily movement of teeth.
3) I'm not a doctor, and anything I do isn't a medical procedure. This is an art project.
4) I'm a busy student, so you'd need to live in NYC.
5) I'd negotiate with you for the cost of participating in my art project.

>>805912
I separated the teeth into separate models, moved them to their final position, then animated their movement between the original and final positions using interpolated keyframes.

>>805546
>wing it

The steps are planned out in CAD, to move .3mm every two weeks. I'm going to wear the aligners 24/7 except for eating.

>>802541
Honestly, the technique I'm using for the actual aligning process is very shitty and DIY. The average person without advanced knowledge of CAD programs, 3d printing and laser scanning couldn't do it.

Orthodontists and ortho techs use specially designed proprietary software to easily manipulate the 3d tooth geometry. I haven't been able to find a copy of that software, and there's obviously no open-source version. So I've had to manually do the process in Blender- separating each tooth in the scan into a separate model, and animating their movement.

Simply making retainers from mold though.... that's super easy.

>>802541
Honestly, the technique I'm using for the actual aligning process is very shitty and DIY. The average person without advanced knowledge of CAD programs, 3d printing and laser scanning couldn't do it.

Simply making retainers from mold though.... that's super easy.

>>802242
Nope. I haven't seen that thread.

>>802238
It's just a weird angle, it's not actually lower. It's pushed outward. The whole point of this process is to push it back inward, and make room for it to do so.

>>802000
Thanks!

Do you guys think there's any interest/market for people to get new retainers on the cheap?

A new retainer from my dentist costs a couple hundred dollars. I could make one for just the cost of my time (which is a lot cheaper than a doctor's time).

>>801648
I'd consider making cheap retainers for people, but not aligners. Too much liabilty.

>>801805
I used a NextEngine laser scanner.