Refinement

Message

#1 Post by **tuna** » Tue Mar 16, 2010 8:06 pm

hello,

My first two refinement trays feel like they were the 13th tray of 14 trays treatment. I guess when i took the impression for the refinement the teeth moved just a little bit.

Will the refinement get better? why do they have to take an impression, why cant they work on from the 14th (last tray ) on.

the refinement is 9 trays.

can anyone comments? are you happy with refinement

#2 Post by **Bellalalala** » Wed Mar 17, 2010 8:38 am

I'm not entirely sure what you mean about your new trays feeling like 13th and 14th of your original treatment.

As for the impressions, well here's how I understand it (anyone with more info feel free to correct me):
there is a lot of "wiggle room" as to how invisalign positions your teeth, it's not exact. So, even if your last tray fits, it's not necessarily a true model of exactly how your teeth are positioned.
A new set of impressions is a much more accurate representation of the actual current position of your teeth.

#3 Post by **DrJasonKTam** » Wed Mar 17, 2010 7:21 pm

There are some providers that do not take new impressions for refinement. They rely on the use of the photos to make the technicians determine what changes still need to be made. This is an extremely inaccurate way to proceed with such a detail-oriented treatment.

Generally, your last tray in your first set of trays should have your teeth completely aligned. If your teeth were truly like this, you wouldn't need refinement.

Consider a new impression at refinement as a new start of treatment, only with your teeth in a better position than when you originally began your journey :).

#4 Post by **myhollywoodsmile** » Mon Mar 22, 2010 5:26 pm

Wow, I'm amazed some don't take impressions. I would be pretty unhappy with that myself.
My teeth were still fitting my last set of original aligners, but the first refinement tray was a MUCH better fit, so I am very grateful that a new impression was taken.