How often do you change your Invisalign trays? |
The truth is that the most important factor in how often to change the tray is how much movement is programmed per tray. Imagine the following two hypothetical scenarios:
A. 2 degrees of rotation for one tooth
B. 4 degrees of rotation for one tooth
Scenario A requires 2 trays to complete the 4 degrees of rotation.
Since we reasonably expect 2 degrees of rotation per week, A would allow for weekly aligner changes whereas B would allow for aligner changes every 2 weeks. The net movement in 2 weeks is till 4 degrees. Therefore, the more important thing in Invisalign treatment is the total treatment time, rather than thinking about how many trays you have.