Crossword Genius

Temporary effect of a false tooth (7)


I believe the answer is:

I'm a little stuck... Click here to teach me more about this clue!

'temporary' is the definition.
(a stopgap measure is a temporary one)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for stopgap that I've seen before include "Temporary measure", "Temporary fix", "A temporary or impromptu substitute", "A temporary substitute or solution", "Temporary expedient".)

I've seen this clue in Sydney Morning Herald.