How many times a year do I really need to get a scaling?

I only went to the dentist to get treatment when I had a lot of tartar.

However, even though there is no particular inconvenience in the surroundings
I heard that it is good to get it regularly.

Even if you brush your teeth thoroughly
I started to get a little worried because I heard that plaque can form in places the toothbrush can't reach well, like between the teeth.

I'm wondering if it's good for people who don't get a lot of tartar to get it done regularly.

How often do you all get your scaling done?