I think the high palate has connection to clockwise rotated maxilla.  

High/vaulted palate is ALWAYS connected to long faces. There is no person with a short face who has a high/vaulted palate, it's structurally/physicaly impossible. Now then, is such a condition genetic? Well we know it's not.

Every newborn starts off with a flat palate and if the tongue doesn't support it enough eventually the force of gravity will prevail and pull your palate (and your face) down.

As for your expansion when you were 13, if you didn't adopt good posture habits it's likely you just relapsed. Same thing happened to me, I wore a palate expander when I was 11/12, but I eventually relapsed because no one told me about proper oral posture.

@ayla-mao i did not relapse at all my palate is still wide at the same time it’s vaulted. I had Hawley retainers to keep expansion. 

Posted by: @michael_101

Is palate height genetic? I have palate that is very high and I got it expanded when I was 13 and it is still high. So is there any chance that it is a genetic thing due to genetic variation. Or can I somehow lower the height from more expansion or something. My palate is more wider in the back then the front. I have enough tongue space. Something please help me.

You probably had a dentoalveolar expansion, that explains what you are describing.

@sergio-oms is that bad and if so how can I fix it (is an appliance needed)? Also I had expansion so all my teeth fit in cause there’s  wasnt space for one. First dentist I visited said he’s gonna extract teeth then we said no. Second dentist said it he will expand it so my teeth fit so was it an dentoalvelar expansion?

Posted by: @ayla-mao

High/vaulted palate is ALWAYS connected to long faces. There is no person with a short face who has a high/vaulted palate, it's structurally/physicaly impossible.

I have a high palate with a fairly short face, and I'd look better if my lower third had more height. Never heard about long faces being synonymous with high palates.

Can the size of the teeth effect the palate's height?

Posted by: @michael_101

@sergio-oms is that bad and if so how can I fix it (is an appliance needed)? Also I had expansion so all my teeth fit in cause there’s  wasnt space for one. First dentist I visited said he’s gonna extract teeth then we said no. Second dentist said it he will expand it so my teeth fit so was it an dentoalvelar expansion?

It is not possible to be sure without seeing photos and probably some CT scan but it looks like it was a dentoalveolar expansion

Expansion doesn't mean proper palate position/angle...

I have a high/vaulted palate and a IMW of 38mm. Yet I somewhat have a long face, however IMO high/vaulted palates come from a lack of forward growth as the lips and tongue not supporting the anterior part. Thus leaving the palate to drop down and back In the front while the back is supported by the masseter and temporalis to keep the palate up. I think that to fix a vaulted palate, you need to have a cranial vault to bring both in a state of balance. CCW rotation of the maxilla should not be the only thing to achieve, it should be getting a cranial vault to get the dental arch longer and have the occlusion be straight and balanced.

@sergio-om isn’t dentoalverlour expansion teeth tipping? They didn’t make my teeth tip they made my palate expand so this one tooth that wasn’t fitting fits. Can this still be dentoalveolar expansion or no?

@sergio-oms also there was not device put on the outside of my teeth for expansion which I think is need for dentoalveoler expansion. Only one device was put in the middle of my palate.