Deep Cleaning Does It Hurt and What to Expect?

Hi,


It has been years since my last visit to the doctor, and I went to this one office that only accepted Medi-Cal insurance, so it covered the basic check up. Anyway during the appointment, they did the X-Rays using this round device they stuck in my mouth and I bit down on it.
When I did X-Rays years ago I remember biting down on a smaller square shaped thing it was much easier, maybe this dentist office used old school stuff?


Please help.

I didn't find the right solution from the Internet.

References:
 www.healthboards.com/boards/dental-health/1037037-deep-cleaning-does-hurt-what-expect.html
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Thanks