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View other whiteners by Opalescence (5 items total)

Opalescence Whitening 10% 15% 20% 35%

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Product ratings (126 reviews)

Rated: 4 out of 5
Agreeability:
Rated: 3.7 out of 5
     
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Rated: 3.8 out of 5
     

83% of reviewers recommend

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TAKE HOME
Requires Tray System
10%-35% Carbamide Peroxide
Average Price: $168
Opalescence Whitening 10% 15% 20% 35% image

Opalescence Take Home Whitening Gels Review

Opalescence offers one of the most popular and arguably the best take-home professional whitening product on the market. It is made by Ultradent and available in 10%, 10%PF, 15%PF, 20%PF and 35%PF carbamide peroxide concentrations to suit your bleaching and oral health needs. This procedure also provides you with custom-made mouth trays that your dentist will fit for you to ensure maximum gel-to-tooth contact when you wear them at home.

What does the PF stand for?

The PF stands for potassium nitrate and fluoride. A 2005 study in the Journal of Operative Dentistry found that the combination of potassium nitrate and fluoride in Opalescence PF reduces vulnerability to cavities and increases the re-mineralization of the enamel for greater tooth strength.

How does Opalescence take-home gels work?

First, your dentist will select the proper concentration of Carbamide Peroxide for your whitening needs. You can whiten with any of the formulas between 10% to 35% and get the same results – it just takes a longer period of time to achieve results with a lower concentration formula. Your dentist will also take impressions of your teeth, so that a laboratory can create custom bleaching trays just for you. You'll take the gels and trays home and wear them according to your dentist's instruction (minutes per day/days per week). You'll place the Opalescence gel into your bleaching trays and wear them as directed.

Using your custom-made tray with Opalescence

When using Opalesence it is important to have your dentist make very precise fitting trays with "block out" (reservoirs), since the bleaching gel will cause irritation if it comes into contact with your gums. Keep in mind that Opalescence is not water soluble; if the gel comes into contact with your gums from an overloaded tray, it will not just wear off or rinse off. You need to use a dry tissue or wash cloth to remove the excess from the gums. This is why reservoirs are so important – it helps to hold the material in the tray and not on the tissues. If you are bleaching for only a short time (i.e. 1 hour), reservoirs are not necessary for your fitting tray.

 

Do Opalescence whitening gels cause tooth sensitivity?

The higher concentration formulas can most definitely cause tooth sensitivity. If you experience sensitivity, you should tell your dentist and try a less concentrated formula (i.e. 10%). The other option is to use a desensitizer.php">desensitizing gel immediately after whitening your teeth (i.e. Relief ACP Oral Care Gel, UltraEZ Desensitizing Gel). A study done by Dr. Wm Browning of Medical College of GA tested the sensitivity factor of Opalescence PF 10%, NiteWhite Excel 2Z 10% and Rembrandt XtraComfort 10%. The study found that all exhibited some degree of sensitivity but Opalescence users had less sensitivity and for a significantly shorter period of time. Read our article about teeth whitening sensitivity for more information.

 

Do the different concentrations make a difference?

You can bleach from 10% to 35% and get the same results – it just takes a longer period of time to achieve results with a lower concentration formula.

 

How long does the bleaching gel last for?

Opalescence has a timed sustained release for 8-10 hours. It is recommended to do overnight bleaching, when possible, because of the products sustained release formula. It is not recommended to do overnight bleaching with the 20% and 35% formulas, as it could cause SEVERE sensitivity. Consult your dentist about this.

Whitening Factor

Results are often seen after just one night. Because this product uses custom fabricated trays, it is considered the “gold standard” in teeth whitening. If you have been disappointed by over-the-counter products, we highly recommend this product.

 

 
Sarah, Bay Area, CA
Sep 09 '08
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I highly recommend this - I have used Opalescence 15% and 20%. They both worked great. I got resutls after just one application. The custom fabricated trays is an investment though.

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LEO, New Orleans
Oct 21 '08
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I used this product. It worked very well but I didn't like how long it took. However, it holds up for a long time. Your teeth will be whiter for at least a year as long as you continue to use a whitening toothpaste.

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Marsha, Virginia, USA
Nov 13 '08
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Yes. This product is the best. I used it for a few weeks and the results lasted for what I think was about 3 years!~! I've tried a few others since, and the result is not the same nor is it as long lasting as this product. This IS the best.

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JASON, DALLAS TX
Jan 26 '09
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I have been using this product off and on for 4 years. Received it initially from my dentist but now but it online. I use the 15% concentration and have had minimal tooth sensitivity. It trully is a great product and works very well. I will continue to use it.

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Anonymous
Feb 09 '09
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I've used the 20% for only 4 treatments, and I can already tell a difference, as can my family. I'm pleased so far except that my gums are irritated. I think I'll hold off for a couple of days and then pick it back up. My dentist was having a 50% off special, so the cost was affordable.

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Parker, New Orleans
Feb 15 '09
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Great product. I saw results after just one use. The only problem is the sensitivity but in my mind the results are worth it.

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Jody M., St. Louis, MO
Mar 04 '09
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I have used Opalescence for 10 years. After the initial month or so to get my teeth beautifully white, I just maintain it about once every 2-3 months. I get compliments all the time about my pretty white teeth - natural looking, not "neon white". I recommend this to all my friends!

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DeBorah, Chicago, IL
Mar 13 '09
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I was introduced to the Opalescence Whitening system through my dentist about three months ago. I love the system, but the sensitivity was a problem. I spoke with the dentist receptionist, she suggested to skip days between whitening to allow the sensitivity to go away, then proceed. This was the best advice to continue with the procedure to get the results that I want. so I will still get the same results at a slower pace before I get my crown replaced. Also, thanks to your website for the information to wait 2 weeks to allow the color to come true before replacing my crown.

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Sallie Wald, hawaii
Apr 28 '09
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I've used this product for well over 15 years (as needed). Its terrific and worth the original expense. I have never had to replace the custom trays...still using the same ones! Since my move to Hawaii, 3 years ago, I have used a different bleach formula called "Day Lite" since thats all my dentist carries. Its not nearly as effective in whitening as Opalescence, but better than any over-the-counter products. I am trying to find it online as one reviewer suggests it is now available online. Hope so! Does anyone know of a site that sells it online? I do have sensitivity problems on occasion, but you just skip a day or two and do it again. Not a problem for me doing using that method. Once you use it, you won't want any other product. Highly recommended.

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Dawn, Bay area, CA
May 07 '09
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I love this product. I have used it for 5 years, and have always had great results. I bumped up from 20% to 35% this time, and ouch!!! Major sensitivity. I think I used too much in the tray though. Only the gums hurt, not my teeth.

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Travis, Utah
Aug 11 '09
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I have been using the 10% for the last three weeks or so... I never do it on a constant basis (I probably should) but it has worked great so far. I might do it once or twice a week... maybe three times. I usually just leave them in all night. A little sensitivity but not bad at all. I am going to try the 35% and wear them for the recommended 2 hours and pull them out.

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Annie, Los Angeles Ca
Sep 22 '09
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Loved it! tried the over the counter strip stuff, the paint on stuff and it all stunk, tasted bad, foamed up in my mouth and didn't stay in place. To add insult to injury it didn't work, so I went to my Dentist and she gave me the Opalescense whitening and it worked beautifully! Love my smile and wish I hadn't spent all the money on the over the counter stuff.

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Laura Lu, ventura ca
Sep 22 '09
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LOVE IT. I have a dazzling white smile!

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Morgan Prevatt, Tampa,FL
Nov 07 '09
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This is by far the best whitening product I have ever used my dentist does not carry it anymore and I went across town to find another dentist that carries this product.I work as a model and I am often on air and in pictures I have never had ANY product work so well.I switched a few times because of my own dentist using different products I have used zoom and crest and nothing has come close!!!!I can use this product once and get the same results as I would over a month using other products!

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MARIO H., JACKSONVILLE
Nov 18 '09
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The cheapest and fastest way to white teeth. All bleaching services are all overated and too expensive from a dentist. Do it yourself is the best way to go. Make sure your teeth have had a regular check up to get rid of any plaque build up and Amazon has cheap great specials on Opalescence. This is something I will only use and very easy to use even though yes there might be sensitivity but if you use Fluordex a strong Fluoride toothpaste or Sensodyne you should be fine.

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Lindz, canada
Nov 19 '09
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ive used this whitening system before it works amazing! i got 8 syringes of whitening material and it has last me almost 2 years, i just touch up my teeth with the trays for a few hours for a few days whenever i feel its not as brite as i would like. works amazing and i great investment your money will go a long way with this product. compared to many other simalur systems this one is one of the most effective as well as affordable

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Ckmiami, miami, fl
Nov 21 '09
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This product works really well. Just make sure your tray is completely dry from the night before when you put in the new gel. I didn't do that last night and it was fizzing the whole time. When you push it up on your teeth, just run your finger across the top to get rid of any excess gel that might irritate your gums. I think I will definitely try the technique of skipping nights every now and then to give my teeth "a break".
It is worth it!!!

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Alice, Romania
Dec 22 '09
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I just tried the 35%, and I couldn't wear them for over 40 minutes. I have used 15% two years ago, and there is no difference regarding the expected results. The whitening process takes as long, the only difference is the daily time you should wear them. My dentist warned me about 35% and sometimes when I swich from hot to cold, it hurts a bit. Another problem would be that along with whitening the teeth, it whitens gums as well.

Also, do not drink coffee, or smoke. This gives extra "nuance" to the teeth, and it takes longer and more syringes to get to the results you would get without doing this. Also avoid carrots and other staining products like natural juices, red wine, any aliments which contain colorants. When I had my first bleaching I drank a greenish cocktail with a friend of mine and because my teeth were so sensitive, they were green for 3 days while I still did my whitening.

SO... my advice... don't overfill the tray and don't keep the solution longer than 40 minutes (max for 35%). I can't see how you could do that anyway.

Before a whiter smile, comes a healthy one!

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Jim Williams, Newcastle Australia
Jan 31 '10
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If you suffer from Bruxism (teeth grinding while you sleep) like I do, then don't bother with the overnight treatment. All you end up with is a mouth full of gel in the morning. I've had much better success going 2 hours with 15% gel.

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Rick G., Jamestown, NY
Mar 06 '10
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I did this treatment through my dentist with the 35% gel, using a tray shaped for my teeth. After about 5 treatments, I got the results that I wanted. It does cause sensitivity problems in both the teeth and gum with occasional sharp pain, but usually for only a couple of days.

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Luca, Italy
Apr 11 '10
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I've been looking for a safe product like this for such a long time. I use it with a tray made by my dentist and it definitly works! I chose the 10% formula because it's the gentlest one and I didn't want to risk any side effect. I know I could wear it at night but I prefer during the day, for about three hours. My teeth are whiter and I didn't experience any side affect as I did with the whitenig strips sold in pharmacy. I see many ads on the internet for products sold individually, but my advice is ALWAYS go to the dentist. I will cost much but it will give a better result without any problem for you healt... and if possible ask your dentist to give you Opalescence (at the lowest concentration) which for me was great... I'm really enthustiastic about this product!

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Craig, London, UK
Jun 23 '10
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This stuff works great. I have a dazzling white smile which I use for modelling and with this product you can control the level of whiteness you wish to attain. It does cause me some sensitivity but this fades after around 1 day. I only use this product with the dentist made trays once or twice a month to maintain my desired colouring.

I should mention that I use the 35% gel for around 20 mins at a time. When I used the 15% gel overnight I found the sensitivity almost unbearable, it even woke me in the night and I couldn't get back to sleep. My advice would be to use the stronger stuff (35%) for a shorter period of time and do it in the morning so you have all day for the sensitivity to settle, thus not affecting your sleep.

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Angela, Kent, OH
Jun 29 '10
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I've used this product for 5 years. Initially, I used 15% strength, Now I use 35%. I love it! Works great, there is sensitivity, but if you use sensodyne, it helps tremendously. Well worth the money and time. I usually purchase it on Ebay.

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Susanne, PA
Sep 30 '10
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I've used several stregnths. I like the 20% the best. I sleep in it and everything is fine. It used to cause some pain but I started using toothpaste for sensitive teeth and that worked great. If I use the 35%, I notice lines or streaks on my teeth. The 20% doesn't do that.

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Donna, Devon
Oct 02 '10
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LOVE LOVE this product! I used to be a smoker and a huge fan of coffee and my teeth suffered through the years of this bad habit. Finally stopped all that, and have tried different sort of teeth whiteners, but this one is the BEST! Yes, it's a bit expensive but really worth every cent. Easy to apply and use, first night, found the tray uncomfortable but then you get use to it after. Didn't have any gum sensitivity, but my teeth were quite sensitive which I was told was expected. Used whitening over night, and result was noticeable the next morning. My dentist told me not to drink anything dark of colour as this could stain the teeth and the result would not be great. Great thing was I drank everything with straw, which was great for my sensitive teeth. Overall, best buy of the year and highly recommended! Oh, and try the watermelon one..

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Kimberly, Idaho Falls, ID
Oct 15 '10
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I have used Crest Professional Effects Whitening Strips before I used the Opalescence 35%. The Opalescence knocked the socks off of Crest's over the counter crap! I have only used one application of the Opalescence and my teeth are already whiter than the Crest strips ever made my teeth. I am also VERY fortunate that my dentist offers Opalescence for FREE just for getting my teeth cleaned every 6 months. How great is that? They also did the impressions for my customized bleach tray for free as well. Can't complain there! The only thing that i can complain about is an error that i caused. I used a bit too much bleach and it got on my gums and made them burn for about 6-7 mins. But i blame human error on that one. I'll use less next time and i'm sure the results will be wonderful again! I highly recommend this product. I would gladly pay for this product if i needed to! :o)

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Anonymous, Sydney, Australia
Nov 09 '10
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This by far has been one of the best investments ever. I was recommended to use the 10% by my dentist which had worked well but i wanted that hollywood white smile so instead ive been using the 20% - After the first night sleeping with the 10% my teeth were sensitive the next day ( which was expected ) i found that when i had combined my bleaching routine along with either colgate sensitive toothpaste or sensodyne this helped dramatically. I have been bleaching my teeth for the past 3 weeks and have added a photo to show proof of how well this works. I'm glad i have not wasted my money on an in seat whitening procedure - this has been money well spent - i would def recommend this.

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Phil Landfried, Santa barbara ca
Jan 17 '11
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USed 35% 20 times for 30 minutes over two weeks
Satisfactory results
No pain

Want to know how often to use to maintain whiteness

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Michelle, VA
Jan 21 '11
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Just got this yesterday. It works good. I'm in HS, and the dentist decided to give me the higest and strongest one (the 35% one) and let me warn you, if you have sensitive gums like I do, DO NOT PUT TOO MUCH IN THE TRAY. And if you feel some of the gel leaking out, simply wipe it with your finger, a q-tip, or a paper towel. But other than that, it isn't that bad. Once in a while I get a strong pinch in my gums, but nothing too extreme. But if you get the 35%, don't expect a hollywood smile in an hour. It might take a few days. I'm on my 2nd day and my family says that my smile is getting better and better! (:

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Laura, Pennsylvania
Jan 23 '11
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I am absolutely THRILLED with this product! I got it last week and I'm using the 15%, and have done 3 applications so far (overnight). I was worried that I would not be able to sleep in the dental trays but they are so thin and light that it is no problem for me. My dentist said use 1/2 syringe of gel for each application, (right now I'm doing upper teeth only) but instead I used less, about 1/3 of a syringe, as I read that too much gel will cause sore gums, etc. The morning after my first application I was STUNNED! My teeth were stained from coffee and smoking and the next morning they were SO WHITE I could hardly believe it! I love this product and highly recommend it, but you MUST have dental trays made by your dentist to use it (mine cost $150 and included the gel), and I recommend using as little gel as you can, as it will burn your gums if you use too much gel and it seeps up from the edge of the dental tray. Also only do the fronts and bottoms of teeth, not the backs - that is why a lot of people get pain - my dentist said do not do the back, and do it every 2nd or 3rd day. WORTH EVERY PENNY!

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Michele, Mammoth, Ca
Feb 14 '11
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I have used the 35 percent for 3 nights, all night. No problems with pain or sensitivity. Dramatic improvement in whiteness of teeth, so I am very happy. I use small amounts, so have no gel leaking. This is so much better than Rembrant. Crest does practically nothing for me.

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Fabiana, Houston
Mar 31 '11
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I love this product, I got 20% but I slept with my tray and in the next morning I wake up with alll my teeth very sensitivy. I skipped one day, and I did the same thing and again I wake with my teeth hurting. So I changed the way to use. What I do now, I use it for one a hour, and then brush my teeth to clean the gel in my teeth. I do not swallow my saliva during the treatment, I spit it in a glass, because I do not like to have the possibility of swallowing this gel. The results is very good. One a hour per day..

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Eileen Fedorus, edmonton alberta
Apr 06 '11
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I have some in the fridge for over a year but want to know if its out dated. Is there a date code one the product ? Or any other way I can tell if I should use it?

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Bianca, Australia
May 30 '11
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Paid $15.00

I have nothing but great things to say about Opalescence! I originally went to my dentist and got my customized moulded tray and 2 syringes for $200 (soo expensive). I used 15%. I used it everynight for about a week and my teeth were quite sensitive so I stopped using it each night. I went onto Amazon and bought 4 syringes of 20% for just $15 and I use that on my teeth every 3rd night. I have got great results from Opalescence.. my teeth were never stained badly, they were slightly yellow but I wanted to get very white teeth and Im happy to say that I now have VERY white teeth! :) I do get a bit of sensitivity the next day but it is not unbearable and the results are worth it. You will need a customised tray for your teeth though. Dont use those silly at home moulding kits.

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Kim, NY
Jun 07 '11
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Used the last two nights and I see a considerable difference! I am in a bit of pain today though having kept them in for about 8hours both nights...I'm gonna have to skip tonight cause my teeth are throbbing. As for people complaining of gum problems my dentist told me to take care to not put it on gums, just one strip of gel at base of front tooth. She said to trim down any part of the mold where I am having prolonged gum exposure, and to take a toothbrush and brush off gums after inserting. She said a liitle white spot on gums after is normal but any red spots should be considered prolonged exposed spots and to concentrate on avoiding/caring for these areas with the next application.
I had bad yellow teeth from lots of coffee and smoking, even "permanent" stains are lifting!!! My teeth actually look white for the 1st time in a while, and I'm only two apps in! Though I am only going to leave on for 4-5hours in future due to the pain. Good luck to all!

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Sophie , Chicago, Il
Jul 08 '11
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I got this product almost 2 weeks ago and my teeth are SO much whiter it's crazy. They were so yellow before it was disgusting and now they are sparkling white. My teeth are a little bit sensative but what I do is my dentist gave me MI Paste which makes your teeth less sensitive. I put that on my teeth for 5 minutes and then bleach 30 minutes later. My teeth are usually really sensitive but now they are barely sensitive at all. I use the 10% and leave it on overnight for about 9 hours and I noticed a difference after 1 night. This is my favorite product ever!

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Laurel Casey, Denver, CO
Jul 17 '11
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I started using Opalescence one month ago and I absolutely love the results. My orthodontist recommended that the first time I use Opalescence that I only have the trays/gel in for two hours. I didn't see much of a change. My mouth was a bit uncomfortable for the 2 hours when I first used Opalescence. My gums and teeth were a bit sensitive for about 24 hours. One area of my gums was a bit discolored and tender, and that went away within 1 hour. Make sure when using Opalescence that you are sure to wipe off any gel that has escaped from your trays and gotten onto your gums. That will cause them to burn; if there is no gel on your gums, there will be no burning :) Four days later I did a second trial and had them in for 4 hours. I immediately saw a much brighter smile. I am currently on my third trial (5 days after my 2nd trial) and am keeping them in for four hours. I am very pleased with this product and am the 4th person in my family to use it. I would recommend Opalescence to anyone that wants easy teeth whitening that has real results and can be compared to professional in-office teeth whitening procedures. I have been using 15% concentrate Opalescence.

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Laurie, Austin, TX
Jul 22 '11
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Paid $29.00

My family are Dentists, and I love this product. My teeth have changed a lot since using it. It's worth the money!

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Thuraya, brooklyn center, mn
Jul 27 '11
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I used this product with 20% for 4years ago. The result was awesome, I haven't wear it for 3 years now, but my teeth are still white, a lot of people was notice that my teeth are much whiter than theirs, they like my teeth a lot. To start, my dentist told me to wear it overnight for the first 21 days. After that just wear it whenever you want. The most important thing to remember that you have to wait at least 30mins after brush your teeth to wear it (so there no chemical left on the teeth). You wear it right before you go to bed, so no eating, no drinking water either, and no saliva also. That was how it work for me. Hope it will work for whoever try my method.

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Jasmine Culwell, Pueblo, CO
Sep 08 '11
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Paid $225.00

I have been using this product for seven nights now. (15% PF) The results are amazing. I had my one week check-up at the dentist yesterday and he said that he has never seen such good results. In just one week my teeth have whitened SEVEN shades!!! I am very impressed with the results and do recommend this product to anyone looking for a brighter smile =*] No sensitivity and no gum soreness! I will continue to use this product for the full 21 days I LOVE IT!

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Scott, Middlesbrough, England
Sep 13 '11
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Opalescence PF works.
I am a former heavy smoker and coffee drinker which discoloured my teeth and gave them a dull appearance. My Dentist recommended Opalescence and after 1 month I have experienced incredible results. I use 20% and bleach overnight. Sensitivity does occur but it's not unbearable, Sensodyne toothpaste is a must.
I have included before and after photo's.

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Scott, Middlesbrough, England
Sep 24 '11
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Hi All

I've finished whitening my teeth and the results are fantastic.
I have 20 syringes of Opalescence® PF 20% left over and eBay won't allow me to sell it. I can't even sell it on Amazon. Anyways I would definitely recommend it.

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Shell, manchester
Oct 19 '11
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im a dental nurse and was given a trial to try just 2 5 hour sessions have got my teeth gleaming id recomend this to anyone

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Debra, Ontario, Canada
Nov 09 '11
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I initially whitened my teeth with Opalescence 11 years ago and have applied touch-up applications 5 times since. My teeth have remained white and strong.
White teeth project a younger, healthy image. Whether presenting in the board room or applying to the mail room, bright white teeth make a good impression.

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Renee, Suffolk, Virginia
Nov 20 '11
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This product works GREAT I used it as soon as I got it. I used the 35% strength. You can feel it working as soon as you put the tray in your mouth. It's really hard to keep it in your mouth a long period of time because your gums will be stinging. I think I should have went with a weaker strength. I would not recommend the higher strength for people with sensitive gums. Is there anything I can put on the guns so they won't get in contact with the gel while I am using the mouth piece?

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Suzie C., Cleveland
Jan 10 '12
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The Opalescence system works great BUT you have to know how to use it correctly. Here is what you do:

1. If using the 20% strength or weaker, use the product overnight.

2. If using the 35% strength, use for 30 minutes MAXIMUM.

3. Only use the product with custom trays and ALWAYS brush and floss immediately before using.

4. After placing the trays in your mouth and biting down gently, ALWAYS run a dry tissue over your gums to remove excess gel.

5. Use the product CONSISTENTLY until you achieve your desired whiteness. That means daily or as close to daily as you can. It may take weeks to go from yellow to white. Do not expect dramatic results if you only use the product occasionally or if you take too many days off between treatments.

6. If sensitivity is an issue, ALWAYS use a sensitive formula toothpaste. Your dentist can prescribe a high fluoride prescription sensitivity toothpaste if over the counter sensitivity toothpastes don't help. Also consider popping a Tylenol before inserting the trays. If sensitivity becomes too great, switch to a lower strength gel or take longer between treatments to allow the sensitivity to subside. But you must still use the product consistently.

I had yellow teeth all my life due to a high amount of calcium in my body. Over the counter whitening products didn't help much and caused major sensitivity. I finally had my dentist craft custom trays and tried Opalescence 20% overnight. However, I had to stop after 3 treatments due to extreme sensitivity. My dentist then gave me prescription sensitivity toothpaste and I have had only very minor sensitivity since then.

I used Opalescence 35% for 30 minutes daily until I reached the desired level of whiteness and now use the 20% strength overnight for occasional touch-ups. (I find whitening overnight more convenient than the 30-minute whitening; it's just a personal preference).

My results are fantastic. I don't know how many shades I've lightened but the difference is dramatic. My teeth have gone from a dark ivory-yellow to matching the whites of my eyes. It's a very natural looking shade, not that fake looking blinding white. If you want unnaturally white teeth, you could probably achieve that with continued consistent treatment but that just seems like overkill (in my opinion).

Also a word about tetracycline stained teeth: I don't know how well Opalescent works on that problem as tetracycline staining extends quite deep inside the tooth. However, my husband has gone from having very dark tetracycline stained teeth to bright white using the Kor system under our dentist's direction. If tetracycline stains are your problem and Opalescence doesn't work well for you then you might consider trying Kor.

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Laura, Sydney, Australia
Feb 01 '12
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Paid $150.00

This is by far THE best whitening product I have ever used! I used to use Pearl Drops toothpaste and gel until I discovered Opalescence! I am currently using the 20% and when finished, planning to get the 35% for touch ups.

PROS:
>Easy to use
>Quick results - I saw results after the first session, and reached the desired level after just a week. I leave on as per the recommendations (2-4 hours).
>Very well priced, I paid $150 for the moulded tray and also 4 syringes of 20%

CONS:
>Can get sensitive teeth - I only found this happened when I used too much gel. Desensitizing toothpaste really helps this.
>Gel can be hard to dispense into mould for the first few times

TIPS:
>I use Pronamel just before I use the whitener... This stuff can't be great for the integrity of the enamel!
>ALWAYS floss AND brush before whitening
> 1/3 of a syringe is all you need for one session, top and bottom. I.e. 4 syringes should last 12 days use
> Too much gel = sore teeth and gums!

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Susan, NM
Mar 21 '12
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Used 10% for 3 weeks initially and use the same for touch ups for a couple of nights periodically. Fantastic results! SIX shades lighter! As a long time customer of my dentist, I got the trays for free and paid $50 for 8 syringes. I still pay that much when I go get more.

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Roberto, Sacramento
Apr 03 '12
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I have the 35% gel and it has worked amazing for me! I have tried many over the counter products and none really seem to work for me. So I first decided to get my teeth professionally whitened at the dentist and my teeth got 4 shades lighter. My teeth looked way lighter and white to my family but not as light as id like them. So I got custom trays made by my dentist and got 2 35% gels and its worked great for me! I now get told I have pearly whites! :)

In order to get results and not burn your gums like most people do with whitening products but especially with this product is to:

1. Do NOT put a line of the gel all around the tray. Your wasting your gel and definitely gonna get it on your gums and it will burn them. Only a very small amount is needed. I put only about half the size of a bee bee in each tooth, it saves a lot of gel and saves your money.

2. When you apply your trays in make sure you press on every tooth lightly so that the gel is spread out on your tooth evenly so you don't have random spots that didn't get whitened.

3. If any gel does gel on your gums and you feel it burn, clean it off RIGHT AWAY. Usually if this happens to me, I just take the tray off and them just use a Q tip to wipe it off lightly from my gums and then I wipe the spot where the gel is on my tray that was touching my gums.

Those are the things I do to prevent my gums from getting burned and how I save myself some money by making my gel last.

Tips:

--I stopped purchasing the gel after I found out it was available on amazon and it was way cheaper. My dentist sells each tube for $20 and on amazon I usually get it for like $14-$20 BUT I get 4 tubes instead of just one. I usually buy mines from the seller named JAWTOOTH on amazon.

--Keeping your gel in the refrigerator help preserve it much better.

--If you have sensitive teeth then you should use a toothpaste that helps with sensitivity. I don't have sensitive teeth but a friend who uses Opalescence does and he says it helps him.

Hopefully this review helps any of you!

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Jen, austin, tx
Apr 12 '12
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Paid $40.00

I am a Registered Dental Assistant and have been using Opalescence 10% on and off for less than a year. At first I used the product over night for only 2-3 days, due to sensitivity. (Which was slight..but I can't stand sensitivity in my teeth.) Then I used it every other day. After about 1 week I saw a huge difference (3-4 shades lighter.). After my initial week, I've only use it periodically (for 1 night.) I made my husband custom trays today and he is going to try out the 35% Opalescence on Friday (his teeth are heavily stained.). I started him on Sensodyne tooth paste today in the hopes it will help ward off sensitivity. It's very important that your custom trays are trimmed to fit your teeth well. They cannot fit over your gums. You do not need to put a line of the gel across your entire tray. Simply put a tiny drop at the base of each anterior tooth (the teeth at your smile line.). Bleaching the teeth in the back of your mouth is unnecessary. No one sees the teeth in the back of your mouth, and it wastes the product. A tiny drop is all you need!! If you notice it on your gums...wope it off. It will cause pain in your gums.

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