Orthodontist's offering (6)
I believe the answer is:
braces
'orthodontist's offering' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for braces that I've seen before include "Supports for men's trousers" , "Trouser support" , "More than one couple" , "Stabilises" , "Support for trousers" .)