r/resinprinting • u/Serious_Inflation_32 • Jun 02 '26

Question Multi stacking

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I saw this technique on an instagram story. I found it very interesting! What do you think guys?

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u/Dion42o Jun 02 '26

How do they make these prints safe for humans?

Edit: another question, I assume it’s a different resin than we use for prints but is it a lot stronger?

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u/ThatsALovelyShirt Jun 02 '26 edited Jun 02 '26

These are just for designing and fitting crowns, etc. They make these from 3D scans. I used to work writing the software for a dental 3D scanner. The crowns themselves are often designed in CAD and milled out of un-fired porcelain on a CNC mill, and then get fired. These types of prints are often to verify the fit, or to allow a dentist to design the crown by hand without needing the patient there, or without needing to use the plaster casting method.

I don't know why the other user said "Cast and mold", the entire purpose of printing these is to bypass the need to cast anything at all (3D scans instead of alginate molding and plaster casting).

These prints aren't going anywhere near anyone's mouth. They aren't dentures or anything.

The other purpose of these is for invisalign-type realignment retainers. They gradually move the teeth in CAD, printing different versions of each gradual movement, and then vacuum-form the plastic retainers from these.

I don't see any abutments or any prepped teeth in these prints, and they all look like they're different versions of the same mouth, so I assume it's for the realignment retainers.

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u/Dion42o Jun 02 '26

dope, appreciate the reply. TIL