Do you wonder when you need to have a scaling?

The most accurate answer is: when there is tartar, go to the doctor to have a scaling!

Cleaning when not necessary (no tartar), will make the tooth surface rough, potentially scratched, especially when the "scaler" is not a doctor and does not understand the tooth structure.

The most common calcification site is on the inner surface of the lower incisors, as shown in the figure. You can see them in the mirror, just  try to look closely!

So, how long has it been since you have your teeth cleaned? Contact your dentist immediately if you need help!