This is a common misunderstanding with your insurance plan. Every insurance gives you a certain amount of units of scale, which is the time spent on scaling your teeth. For example, some insurance companies (provincial government) give you 12 units of scale per calendar year. On average a patient would use 2 units at one visit, so technically you could have your teeth scaled 6 times a year.

The 6 – 9 months is normally the maximum for a recall exam (check-up) or polish.