Tray 10 of 21. Almost to the halfway point! The top teeth seem to be in place and the tray provides stability and prevention of movement back. The lower tray is moving the middle teeth out now to make room for the final push of the front teeth crowding. It's been a couple of easy trays and I sense that I'm about to hit a few tight ones as the intense push-out begins.
Separately, this is my favorite Yertle month yet with the navigation of the steps! Good work JM!