The treatment period and costs are comparable to traditional metal braces, provided the teenager wears the alignment trays consistently. Indeed, the diligence with which the teen wears them is a critical factor. They are most effective when worn between 20 and 22 hours per day, changing to the next tray on schedule, which is usually about two weeks.
The good news when it comes to compliance is two-fold. First, a clinical study has shown that teens wear their clear aligners on average just under 21 hours a day. This is right where it should be, showing that teens recognize their obligations and take it seriously. Second, to double check their diligence, there are blue indicators on each of the aligners that any Invisalign provider in Los Angeles can use to verify that they are being worn as directed. The indicators fade over time when worn properly, so there is no tricking the dentist.