Bone conduction Head Phones

Hello folks , I have an idea about a project thus I need some information first .

I was wondering if we could 3d scan our teeth in some way and get an stl file or a file that can be processed later on a cad programm . I think i have a way though not sure how to do it . My idea is to mold our teeth with some kind of material 

then 3d scan that mold and get the file .

UPDATE : 

And the idea follows .

I just read about bone conduction and saw a bunch of expensive bone conduction head phones that wrap around your head thus not your ears .And said to my shelf thats cool but why do i have to have a thing  around my head like usual headphones do.

What is bone conduction ? 

Its actually vibrations transmitted with touch into your scull and your mind understands those vibrations as regular sounds thus you cant hear those sounds(high frequnecies )  if the device is not in touch with your head . 

So the idea is to make a mold of my teeth  , 3d scan it process the file to make space for 2 tiny vibrarion motors and maybe in the future some small circuit to do wirelles transmition of the sound . Then print this into some flexible abs pla whatever ,assemble it

and put it into my mouth .

So you will have a handsfree bone conduction headphones  into your mouth like a  mask that dentists give to athletes , children to protect their teeth . Then you can hear and talk to the phone or listen to music only using your mouth . 

Imagine that "drop the bass " playlist playing right into your head and nobody else can hear it (another practical use , no surrounding noise).

Cool huh ? (difficult and time consuming too though ...)

Few ishues, first off,

Few ishues, first off, contant vibration on teath would hurt them badly.  secondly, how do you get a 3d scan of them with your cheeks in the way?  If you were really set on this, take a mode with a mouth gard or some othe matirial and then 3d scan that once out of your mouth.