Gums cut? I pay dental practice, ultimately for treatment (9)
I believe the answer is:
eucalypti
'gums' is the definition.
(eucalyptus is a kind of gum)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for eucalypti that I've seen before include "Gums" , "Gum trees" , "Oil producers" , "shrubs" , "Antipodean natives" .)