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Joined: Apr 2007
Posts: 2,153
Master Elite Member
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Any info you can find or that that gets referred back to you by dentists would be very much appreciated Here, at least by myself, Andrew. I have a big big problem with plastics, especially the 2 part catalyzed resins such as the urethanes and epoxies, and of course the radioactive character of the x-ray detectable materials does not thrill me either. Essentially for now I have stopped searching due to the fact that in the past, having searched and found what I thought were suitable materials, I was then unable to locate dentists willing to use them. I also found dentists very unwilling to share or elaborate on specifics in composite materials, I got the impression either they did not know at all, or were simply unwilling to provide info because they couldn't guarantee their response was fully correct, so to avoid issues there. One important things I know about the characters of the Bis-GMA resins is that they are not fully resistant to saliva even though they appear water resistant, but they actually decompose ever so slowly in your mouth. Which is exactly why crowns often fall off after only several years in someone's mouth, the resin adhesives, especially, become decrepit From the search I did last year, finding newer materials that don't contain these volatile plastics is very difficult. If you find anything please let me know and thanks in advance! Here is a brief description of dental Bis-GMA's for anyone who doesn't know what that refers to. Synthesis, characterization and evaluation of urethane derivatives of Bis-GMA http://www.journals.elsevierhealth.com/periodicals/dental/article/PIIS0109564102001082/abstractEndocrine disruptors and dental materials: health implications associated with their use in Brazil http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-311X2002000200015Interesting to note also... my then 10 year old daughter had a dental checkup at which the dentist sealed her teeth, telling me afterwards of course because I did not request that... but within a month or two she developed pimples and light acne rashes on her face, previously a flawless complexion, which she has been working very hard to get rid of the past couple years... almost gone but not quite... 5 years or so is the lifepsan of the sealant I believe.
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