WCS is so common all healthcare professionals are aware of it, I doubt it would ever stop your dentist seeing you, although I am unsure why they are taking BP for just a scale and polish. Maybe for their records Idk. Btw I have never heard about BP being checked in UK checkout queues, although we do have options to get checked for free at pharmacies if we choose.

WCS isn't the same as high BP but I have been told it is still a warning you need to keep your anxiety in check, because it's still not good its spiking. Excellent advice from Laurie to work on your grounding techniques/relaxation, find out what works for you.