Stationery item seen in basic dental reshaping (7,4)
I believe the answer is:
elastic band
'stationery item' is the definition.
'elastic band' can be an answer for 'item' (I have seen 'Loopy item' mean 'elastic band' so perhaps 'item' could also mean 'elastic band'). I am not certain of the 'stationery' bit.
'basic dental reshaping' is the wordplay.
'reshaping' is an anagram indicator (I've seen 'reshaped' mean this).
'basic'+'dental'='basicdental'
'basicdental' is an anagram of 'ELASTIC BAND'.
'seen in' is the link.
Can you help me to learn more?
(Other definitions for elastic band that I've seen before include "Rubber ring" , "Loop of thin rubber" , "Stretcher" , "It's flexible" , "Office item" .)