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Medical Forum / General / Dentistry / December 2004Carbamide Peroxide, Old Trays, Still Useable?
My dentist whitened my teeth over 5 years ago and he provided me with the 16% Carbamide Peroxide, created my mold and the lab produced the trays. I bleached at night with these trays with great results. Now I want to buy the bleach online and 'touch up" my teeth. I'm in my late '40's and have not had much change in my teeth. I'm told my gums are fine. Question; Can I still use these old trays? Are they still precise enough or should I get new ones? Also, I'm think I should get the 16% instead of the 22% solution, recommendations. I'm trying to save money but don't want make a mistake? >My dentist whitened my teeth over 5 years ago and he provided me with >the 16% Carbamide Peroxide, created my mold and the lab produced the [quoted text clipped - 8 lines] >instead of the 22% solution, recommendations. >I'm trying to save money but don't want make a mistake? You should be able to bleach with your old trays. If they still fit on your teeth, there shouldn't be any problems. As for the 22% vs 16%, it's not going to make that much of a difference in the active substance on your teeth. If I remember correctly, it's about a 3:1 ratio percentwise of carbamide peroxide to hydrogen peroxide (the active substance). 5/3% difference in actual bleach susbstance... -- Adenosine Semi-informed Dental Consumer ? 5 years ago the instructions might have been to wear the trays overnight. Now the instructions are about an hour with each bleach application (you can do this twice in one day if there isn't too much sensitivity). Fawks >>My dentist whitened my teeth over 5 years ago and he provided me with >>the 16% Carbamide Peroxide, created my mold and the lab produced the [quoted text clipped - 21 lines] > Adenosine > Semi-informed Dental Consumer ? >Question; Can I still use these old trays? If they still fit. > Are they still precise >enough or should I get new ones? See above. >Also, I'm think I should get the 16% >instead of the 22% solution, recommendations. 16% should be fine. >I'm trying to save money but don't want make a mistake? You could contact your dentist to check your trays and buy the bleach from him/her. -- W_B Take out the G'RBAGE wubbabubbazG@RBAGEyahoo.com <snip> >>I'm trying to save money but don't want make a mistake? >You could contact your dentist to check your trays >and buy the bleach from him/her. Why buy from the dentist? You can get 10cc of 22% off of ebay for ~$5 + S&H. Do you see a big difference in the results from different brands of bleach? Would a 'generic' bleach be worse? -- Adenosine Semi-informed Dental Consumer ? > <snip> > [quoted text clipped - 12 lines] > Adenosine > Semi-informed Dental Consumer ? I have seen patients develop significant sensitivity with 10% carbamyl peroxide in 2 days. I can imagine a patient using 22% without a custom tray could get a nice gingival burn--that's if it's not outdated. This stuff should always be bought fresh and kept refrigerated--it's pretty unstable. Steve ><snip> >>>I'm trying to save money but don't want make a mistake? [quoted text clipped - 3 lines] >Why buy from the dentist? You can get 10cc of 22% off of ebay for ~$5 >+ S&H. Because from ebay you don't know how long the stuff has been sitting on the shelf, if it has been stored properly (refridgerated) or another of many factors that can affect the effectiveness of the bleach. >Do you see a big difference in the results from different brands of >bleach? Would a 'generic' bleach be worse? Be more specific. All of the above applies. -- W_B wubbabubbazG@RBAGEyahoo.com Take out the G'RBAGE >><snip> >>>>I'm trying to save money but don't want make a mistake? [quoted text clipped - 8 lines] >another of many factors that can affect the effectiveness of the >bleach. Exactly. The stuff goes bad with age. Ever see the bubbles forming within the gel? That is O2 (oxygen). Joel >>Do you see a big difference in the results from different brands of >>bleach? Would a 'generic' bleach be worse? > >Be more specific. All of the above applies. >><snip> >>>>I'm trying to save money but don't want make a mistake? [quoted text clipped - 8 lines] >another of many factors that can affect the effectiveness of the >bleach. True. >>Do you see a big difference in the results from different brands of >>bleach? Would a 'generic' bleach be worse? > >Be more specific. All of the above applies. Assume the bleach has not been mishandled, and comes from a repudable company. Have you seen a difference between different brands of bleach (of the same %), and is it at all related to the price of the bleach? Also, I've seen some recommendations of once per day, some of twice per day... ignoring problems due to sensitivity, would there be any reason not increase the number of times per day? Would it not be effective? Irritate the gums too much? Damage the teeth due to the acidic nature of some bleaches? I looked for pubmed on stuff about frequency of bleaching related to effectiveness, but I couldn't find anything. -- Adenosine Semi-informed Dental Consumer ? >My dentist whitened my teeth over 5 years ago and he provided me with >the 16% Carbamide Peroxide, created my mold and the lab produced the [quoted text clipped - 3 lines] >late '40's and have not had much change in my teeth. I'm told my gums >are fine. Go for it. >Question; Can I still use these old trays? Are they still precise >enough or should I get new ones? Also, I'm think I should get the 16% >instead of the 22% solution, recommendations. >I'm trying to save money but don't want make a mistake? |
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