Hi John~ I have thought of doing this but never took the time to make a dup. It really is a good idea. On a spring retainer I inevitably break the teeth. So far no compaints but still it is a good idea to dup. Just like labdude another step that would slow me down. Of the 2 offices that I worked at as a tech. I never heard the doctor make any comments on the returned model after fabrication, they usually don't even see the model, they toss it. I really like for them to check the model if the retainer does not fit in the pts. mouth and fits the model, then we know it is the impression, if not it would probably be at my end.
I think having worked as an ortho tech. has helped me to realize that you can only tweek a tooth a couple of mm.
Lab dude~ I charge per tooth reset $2.50
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