Crossword Genius

Part in dental examination going round (7)

Ross

I believe the answer is:

orbital

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

'going round' is the definition.
(I've seen this before)

'part in dental examination' is the wordplay.
'part' becomes 'bit' (both mean a piece of something).
'in' is an insertion indicator.
'dental examination' becomes 'oral' (oral is a kind of examination. I am not sure about the 'dental' bit.).
'bit' placed within 'oral' is 'ORBITAL'.

Can you help me to learn more?

(Other definitions for orbital that I've seen before include "Describing the M25 motorway?" , "going round the city" , "Revolutionary" , "that's going around" , "Following a path around a heavenly body" .)

I've seen this clue in The Sun.
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