common grass

I recently went to a dentist to clean my teeth. Because it was first-time visit, he said he need to check my teeth and he used a piece of gauze on my tongue and pull my tongue by hand to the left and to the right to check. Do all the dentist do this kind of checking here in Montreal? I wonder if it is sexual assault?
Can someone help me? Thank you very much!

resp-vendor

医生用手抓女生舌头检查，带手套了吗？

common grass

yes, he wore gloves and with gauze.
3 t+ M- g( o$ i) F! @7 X% P2 xI never heard such thing in China.