The Palatine bone forms the posterior roof of the mouth.
No.
A mouth.
If you constantly rub it against the roof of your mouth, yes.
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The bones comprising the roof of your mouth are the fused maxilla bones and the palatine bone.
Roof. The roof of the mouth is where your sinuses rest, on the other side.
The medical term for the bones of the roof of the mouth is "palate."
The palate.
Soft palate
Arachibutyrophobia is a fear of peanut butter sticking to the roof of one's mouth.
It's the top of the inside of your mouth.