Date: Wed, 6 Jun 2007 00:14:32 -0500
From: "ESCO automatic digest system" <LISTSERV@LISTSERV.UIC.EDU>
Subject: ESCO Digest - 4 Jun 2007 to 5 Jun 2007 (#2007-55)

There is 1 message totalling 50 lines in this issue.

Topics of the day:

1. Biostar Retainers


Date: Tue, 5 Jun 2007 02:22:37 -0500
From: "SCOTT SMORON" <scottsmoron@COMCAST.NET>
Subject: Biostar Retainers

I made at least a thousand BioStar retainers starting around 1988/1989 until about 2002, at which time I switched to mostly Essix type. In the beginning I was the tech, in the end I was the ortho. Never saw negatives to this. The palates are a beautiful, uniform, comfy thickness. You can actually put your weight on one made from 3mm biocryl and not have it break! I never thought to put one in an ultrasonic and can't imagine doing so. My ultrasonic cleaner is the most contaminated object in the office. Also, like with all plastics, cleaning with a toothbrush is a no-no. They come in many many colors and combinations of colors (Great Lakes probably has the best assortment). When making them, you want to make sure the wires come off the surface a little extra so that the biocryl melts around them a little. That way if the salt/pepper material chips away, the wire stays embedded. And make sure the salt/pepper is WET with bonds better. Make sure the model is thin so the thickness of plastic is increased. You need a good two/three flute tapering lab bur to cut these things out. Again, ask great lakes and they can make a recommendation. I did make hundreds, but maybe not a thousand, via salt and pepper. I never had the thicker biocryl crack when making non-adjusted splints...after a couple of years of grinding, the occlusal surfaces do wear and then there would be cracking. If you have any questions, . Or have your "tech" call me. And for god's sake, do not use the lead pellets to fill in around the model, if they still sell it for that! Yeah, that's smart, create waste plastic with lead pellets embedded into it. Good luck!

Scott Smoron