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Medical Forum / General / Dentistry / June 2005whitestrips unhealthy?
Hi, Can anyone shed some light on Crest Whitestrips, where the active ingredient is Hydrogen Peroxide; Is it harmful/unhealthy on the teeth? Thanks. Peroxide has been used on teeth for a long time. No ill effects have been reported except some transient sensitivity. > Hi, > [quoted text clipped - 3 lines] > > Thanks. If you overuse them it can screw up your teeth pretty bad and it is irreverasable! Use as directed. > Can anyone shed some light on Crest Whitestrips, where the > active ingredient is Hydrogen Peroxide; Is it harmful/unhealthy on > the teeth? I believe that hydrogen peroxide corrodes amalgam fillings. I have never noticed that effect.  Signature~+--~+--~+--~+--~+-- Stephen [What's a Temporary?], D.D.S. Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... > >> Can anyone shed some light on Crest Whitestrips, where the >> active ingredient is Hydrogen Peroxide; Is it harmful/unhealthy on >> the teeth? > > I believe that hydrogen peroxide corrodes amalgam fillings. > I have never noticed that effect. You have never seen a purple reaction product when peroxide touches fillings? Maybe there isn't much of an effect from whitestrips since they are OTC and used only in the front anyway. I have done lots of bleaching in my day. I still have the old Almore Monarch II bleaching instrument from the days of using superoxol heated with this device. [Want to buy it? :-) ] Many vital and non-vital bleaching cases. Even more cases done with custom fitted trays and take home chemistry. I have never seen amalgam discolor from it. Signature~+--~+--~+--~+--~+-- Stephen [What's a Temporary?], D.D.S. Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... >> I have never noticed that effect. > [quoted text clipped - 3 lines] > Maybe there isn't much of an effect from whitestrips since they are OTC > and used only in the front anyway. >I have done lots of bleaching in my day. I still have the old Almore >Monarch II bleaching instrument from the days of using superoxol heated with >this device. [Want to buy it? :-) ] Many vital and non-vital bleaching >cases. Even more cases done with custom fitted trays and take home >chemistry. I have never seen amalgam discolor from it. SuperOxol = 60% H2O2 Will eat the skin from your fingers in minutes -- W_B Take out the G'RBAGE wubbabubbazG@RBAGEyahoo.com It stings skin and turns it bright white for a day. After that, the skin is normal again. Experienced it plenty of times. Same thing for gingiva. Signature~+--~+--~+--~+--~+-- Stephen [What's a Temporary?], D.D.S. Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... > >>I have done lots of bleaching in my day. I still have the old Almore [quoted text clipped - 11 lines] > Take out the G'RBAGE > wubbabubbazG@RBAGEyahoo.com > I have done lots of bleaching in my day. I still have the old Almore > Monarch II bleaching instrument from the days of using superoxol heated with > this device. [Want to buy it? :-) ] Many vital and non-vital bleaching > cases. Even more cases done with custom fitted trays and take home > chemistry. I have never seen amalgam discolor from it. Hmmm ... I thought it was common knowledge ... Maybe I erred---maybe it only happens with carbamide peroxide and older amalgam: http://www.ultradent.com/products/products.php?act=faq&fid=1&pid=4#45 Why does OPALESCENCE change to a dark purple/black color when it comes in contact with amalgam? The dark purple coloration that may appear in the tray following bleaching adjacent to older amalgams is normal and has proven inconsequential, based on years of clinical use. No adverse/detrimental effect on the amalgam restorations has been experienced. It has been theorized that the zinc in old amalgams may be the cause of the discoloration. http://www1.umn.edu/dental/courses/dent_6806fall02/paper9/paper9.html Occasionally a slight purple coloration may appear in the tray following bleaching adjacent to amalgam fillings. I am trying to think of what oxidation reaction will result in a purple color. I need help from someone more recent on chemical reactions. Cu would turn green (with a slight bluish tint), What would add red to create purple? Mg? Cannot remember for the life of me. Anyway, any reaction on the surface of amalgam from a oxidizer like H2O2 should vary by the degree of polish/oxidation on the amalgam and by the mineral content of the particular alloy. Could the purple color simply be a gelling agent of flavoring agent in the bleaching product? Signature~+--~+--~+--~+--~+-- Stephen [What's a Temporary?], D.D.S. Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... >> I have done lots of bleaching in my day. I still have the old Almore >> Monarch II bleaching instrument from the days of using superoxol heated [quoted text clipped - 21 lines] > Occasionally a slight purple coloration may appear in the tray following > bleaching adjacent to amalgam fillings. > I am trying to think of what oxidation reaction will result in a purple > color. I need help from someone more recent on chemical reactions. Cu > would turn green (with a slight bluish tint), What would add red to create > purple? Mg? Cannot remember for the life of me. I was thinking it was probably a manganese compound. I don't know whether there is/was Mn in amalgam. The bleach makers seem remarkably incurious: "It has been theorized that the zinc in old amalgams may be the cause of the discoloration." How hard is it to get some old fillings together with an analytical chemist and an atomic absorption machine? So I doubt the claim that the Opalescence is harmless to fillings. I have never tried the specific product "Opalescence". I have used a lot of Nupro bleaching chemistry and Patterson brand. Neither one has ever caused any amalgam discoloration that I have seen or been told of. Signature~+--~+--~+--~+--~+-- Stephen [What's a Temporary?], D.D.S. Michigan, USA .................................................... This posting is intended for informational or conversational purposes only. Always seek the opinion of a licensed dental professional before acting on the advice or opinion expressed here. Only a dentist who has examined you in person can diagnose your problems and make decisions which will affect your health. ...................... >> I am trying to think of what oxidation reaction will result in a purple >> color. I need help from someone more recent on chemical reactions. Cu [quoted text clipped - 7 lines] > an analytical chemist and an atomic absorption machine? So I doubt the > claim that the Opalescence is harmless to fillings. |
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