Please advise if it's normal for teeth to be hypersensitive after scaling?

Perio Scaling: Yes, it is normal for teeth to be sensitive after scaling. Some teeth and some individuals are more sensitive than others. The more calculus and the more tenacious it is, the more likely to have sensitivity. This goes away usually within a few days.

It could be: Cold sensitivity is a normal thing which is not an indicator of a problem. Try using a sensitive too toothpaste such as sensodyne.

Yes, it is normal: It is very common for ones teeth to feel very sensitive after a scaling and cleaning. This is particularly true if there is a lot of scaling and scraping was done. Some people have more sensitive teeth than others and the scaling can upset the trigger the nerve endings, leading to temporary pain. Use otc pain medication for a few days and you will be back to normal. Hope it helps.