The most common and most likely answer to this crossword clue is the 10 letter word DIASTEMATA
D
I
A
S
T
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M
A
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A
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The straight part
We know that "Dental gaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dental gaps = diastemata.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DIASTEMATA mean?
DIASTEMATA noun- A gap or space between two adjacent teeth, especially the upper front incisors (in humans).
- Any abnormal space, fissure, or cleft in an organ or part of the body.
- The modified protoplasm at the equator of a cell, existing before mitotic division.