Why keep dentures in water?

Discussion in 'Dental Archive' started by Ankur, Nov 10, 2011.

  1. Ankur

    Ankur Guest

    I've been told that constant hydration/dehydration of acrylic may
    result in a dimensional change, but I can't find any evidence to say
    whether this happens or whether it is clinically significant. Have
    there been any studies? Are there other reasons to keep acrylic
    dentures in water overnight?

    --
    Ankur
     
    Ankur, Nov 10, 2011
    #1
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  2. Ankur

    Bill Guest

    "Ankur" <> wrote in message
    George Washington's false teeth have not been kept in water and look
    at how nasty they look!
    http://www.flickr.com/photos/63021824@N00/403876953/
     
    Bill, Nov 10, 2011
    #2
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  3. On 11/10/2011 6:39 AM, Ankur wrote:

    Dimensional change due to dehydration was pretty much accepted as
    gospel, and I don't remember ever being given references.
    However, it happens that there IS evidence of dimensional change with
    dehydration of acrylic resin bases. This study touts the superior
    dimensional stability of polycarbonate for denture bases. Too bad
    polycarbonate is no longer used in beverage containers due to toxins
    leaching out.

    http://www.ncbi.nlm.nih.gov/pubmed/14641656

    Steve

    --
    Mark & Steven Bornfeld DDS
    http://www.dentaltwins.com
    Brooklyn, NY
    718-258-5001
     
    Steven Bornfeld, Nov 10, 2011
    #3
  4. On 11/10/2011 12:19 PM, Bill wrote:

    That's not bad. They actually look like human teeth. Do they credit
    the dentist? Traditionally, it's said that Jonathan Greenwood was his
    dentist. But I've heard that one of Washington's sets of dentures may
    have been made by Paul Revere.

    Steve

    --
    Mark & Steven Bornfeld DDS
    http://www.dentaltwins.com
    Brooklyn, NY
    718-258-5001
     
    Steven Bornfeld, Nov 10, 2011
    #4
  5. Ankur

    Ankur Guest

    * Steven Bornfeld <>
    Thanks for that reference. That study measured dimensional change
    after 7 and 30 days of dehydration, so it seems to support long term
    storage in water.

    I'm also interested in the effect of leaving it out of water
    overnight; if, say, 10 hours a day out of water doesn't cause
    significant distortion, then leaving it out might help reduce the
    probability of Candida getting into the denture.

    I'll investigate some more and post back if I find anything
    interesting.

    --
    Ankur
     
    Ankur, Nov 10, 2011
    #5
  6. On 11/10/2011 4:41 PM, Ankur wrote:


    Don't you think the candida usually comes from the denture into the
    water, not the other way around?
    Kidding. I actually have had patients who've dried out their dentures
    and I honestly can't say I've ever seen significant dimensional change
    where retention is affected. But I still tell patients to keep their
    dentures wet. And the labs always deliver the finished dentures in a
    bag with water in it.

    Steve

    --
    Mark & Steven Bornfeld DDS
    http://www.dentaltwins.com
    Brooklyn, NY
    718-258-5001
     
    Steven Bornfeld, Nov 10, 2011
    #6
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