Answer: No, modern dentures are an exact copy of the wearers mouth, complete with all the ridges and valleys, ripples and grooves down to a very fine limit. However, the outer face where the tongue can rub, are smooth, so that food is less likely to adhere when eating.
No, it's supposed to lay flat and straight over its back.
It means smooth, or flat
level
The flat surface felt smooth.
Slate.
Other words for 'flat' are... even, level smooth, equal.
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flat, even, level, polished
level
level
level
Slate is a sedimentary rock that can be split horizontally to produce smooth flat surfaces that is often used as a roofing material.