Shooting acrylic
How do you guys shoot acrylic on your lower appliances?
Do you do it in three parts: Right side, Left side, middle (that order?)
Do you do it in 2 parts: Right half, then Left half?
I have been still having random shrinkage of the acrylic away from the posterior teeth 6's and 7's. I have changed my pour up method (per labdude) which did lessen the instances of shrinkage.
I mentioned this to one of my doctors and he asked if I was pouring in 3 stages or not. and I couldn't answer him, i didn't know. He thinks that is why you pour up in 3 stages to eliminate lingual shrinkage..
I paid attention the next time I poured up and it looks like I was pouring in halves, I guess as a result of me trying speeding up the acrylic process and/or pouring up in patterns. I have been consciously pouring up in three stages since then like I was taught in lab school and it looks like it solved the problem. What do you guys think?
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