• Welcome to Dental Lab Network
    1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

    Percent barium sulfate for cone-beam dual gradient scan guide?

    Discussion in 'Implants' started by EricH, Dec 30, 2016.

    1. EricH

      EricH New Member Full Member

      Joined:
      Jun 2014
      Messages:
      19
      Likes Received:
      1
      I'm confused about what percentage of BaSO4 I need for a scan guide. I have read everything I can find, but the percentages vary from 10 to 30% in the teeth and 3 - 15% in the base. This is for a cone-beam CT scanner. The Dr. doesn't know either, but he does want a dual gradient. I hear about "noise" caused by anything above 12%, but then others say 30%.

      Any quick answers would be greatly appreciated. I need to make this thing today if possible. Thanks!
       
    2. Glenn Kennedy
      Breezy

      Glenn Kennedy Well-Known Member Donator Full Member

      Joined:
      Jan 2012
      Messages:
      1,370
      Likes Received:
      607
      Location:
      USA
    3. JMN
      Curious

      JMN Christian Member Donator Full Member

      Joined:
      Sep 2012
      Messages:
      5,209
      Likes Received:
      1,035
      Location:
      In a surprisingly solid sea of electrons
      Make your life simple. Jet makes two acrylics precisely for this. One is Opaque the other is Shadow. About $40 each.

      Opaque completely blocks and shadow shows on the image as, well, a shadow, just inverted 'cause it's an CT.

      https://shop.benco.com/Product/4331-279/jet-xr-opaque-4oz-100gm

      https://shop.benco.com/Product/4331-260/jet-xr-shadow-4oz-100gm

      Benco is listing shadow as out of stock right now, but I'd bet Hank has it in stock.
       
      • Informative Informative x 2
    4. doug
      Inspired

      doug Well-Known Member Full Member

      Joined:
      Jun 2010
      Messages:
      1,460
      Likes Received:
      275
      Tom Zaleske has some material he uses that has gotten pretty good reviews...TOM?
       
    5. EricH

      EricH New Member Full Member

      Joined:
      Jun 2014
      Messages:
      19
      Likes Received:
      1
      Thanks for the suggestions. I tried the 30/10 percentages, so we'll see how that goes. I can see how a pre-mixed product would be nice :). I ended up mixing the stuff in an empty Ivocap capsule and running it through the cap vibrator for a couple of minutes. It seems to have mixed well. I don't know how many of these I'll be making.

      Happy New Year!
       
      • Creative Creative x 1
    6. lcmlabforum

      lcmlabforum Well-Known Member Full Member

      Joined:
      Feb 2011
      Messages:
      1,140
      Likes Received:
      108
      Location:
      DFW area, Texas
      This is in the FWIW department - it all depends on the software vendor
      who will be using the image to make the milled guide, it that is what the
      end goal is. It used to be clear and teeth in 10%, from what I remember.
      If the vendor cannot use the image, it is useless. I think Materialise was
      the one that gave your DDS the idea - but protocols change. Sorry I don't
      have a short cut for you.
      LCM
       
      • Informative Informative x 2

    Share This Page