Paste Test

Paste Test

Paste Test

How to be the best consumer you can be.
Oct. 7 1998 3:30 AM

Paste Test

Which toothpaste should you buy?

Illustration by Michael Sloan

There are two considerations to keep in mind when buying a toothpaste: clinical effectiveness and aesthetic appeal. On the former, I talked to dentists on both sides of the Atlantic. On the latter, I and a team of researchers (my friends, mostly) sampled more than 35 different toothpastes. First, the clinical categories.

Seth Stevenson Seth Stevenson

Seth Stevenson is a frequent contributor to Slate. He is the author of Grounded: A Down to Earth Journey Around the World.

Fluoride: Clinical effectiveness basically means "Does it have fluoride?" If it does, it's effective--fluoride strengthens tooth enamel. Some toothpastes boast higher fluoride concentrations than others, but the difference is negligible. Most dentists agree that if it's got fluoride and it's approved by the American Dental Association, you can't go wrong with it. How regularly and how attentively you brush matters far more than what you brush with. But while it's true that any fluoride toothpaste will do a fine job, certain clinical distinctions may help you choose your weapon. Some toothpaste claims are bogus, but others are for real.


Tartar control: For real! Tartar control toothpastes (Crest Tartar Control, Colgate Tartar Control With Micro-Cleaning Crystals) feature an ingredient called tetrasodium pyrophosphate. This sponges up minerals in your saliva that would otherwise collect on your teeth and form tartar (hardened plaque). Tartar control toothpastes can't remove tartar, but they can stave it off.

Toothpastes for sensitive teeth: For real--sort of. Toothpastes for sensitive teeth (Sensodyne, Crest Sensitivity Protection) use potassium nitrate to block nerves connected to your teeth. This works for people with receded gums. But if your sensitivity stems instead from cavities, habitual tooth grinding, or a root canal problem (as it does for most people), sorry--these products won't do a thing for you.

Baking soda: Bogus! Baking soda (Aquafresh Baking Soda, Colgate Baking Soda & Peroxide) is a popular toothpaste ingredient. Baking soda does nothing whatsoever for your teeth. However, its effervescence may leave your mouth feeling fresh and clean. If this encourages you to brush more often, mazel tov.

Whitening: Entirely bogus! Whitening toothpastes (Mentadent Advanced Whitening, Colgate Platinum Whitening, Rembrandt, countless others) remove surface stains--but all toothpastes will do this, even the nonwhitening kinds. No toothpaste can whiten your teeth permanently. Dentists can apply peroxide solutions to bleach your teeth (just as peroxide would bleach your hair), but the peroxide would have to stay on your teeth for several continuous hours before it made any difference. Brushing with whitening toothpastes does nothing, no matter how many times you have at it. Topol "smoker's" toothpaste claims to remove stains caused by smoking. Again, it is no more effective than any regular toothpaste would be--it just costs more. Rembrandt's whitening pastes can cost up to $8 per tube--a horrible rip-off.


Triclosan: For real! Triclosan is an anti-microbial solution currently available in a single toothpaste: Colgate Total. One dentist I spoke with called Total "the first revolutionary toothpaste in a long time." Why? Triclosan clings to your teeth even after you finish brushing and continues to kill bacteria (the dentist says you may feel a "residual slipperiness" after you brush with Total). Because it alone contains triclosan, Colgate Total is without question the most clinically effective toothpaste on the market, for now. Other toothpastes will no doubt add triclosan soon.

Of course, as noted above, any fluoride toothpaste will do an adequate job. For this reason, you may wish to buy CVS brand tartar control toothpaste (or a similar generic brand), which is fluoridated, has tartar control, and is every bit as effective as every other toothpaste save Colgate Total, yet costs significantly less than its flashier competitors. Or you may wish to ignore all the above advice and choose among the flashier competitors for aesthetic reasons, which are laid out below.

Consistency: This is determined foremost by whether the toothpaste is a "gel" or a "paste." Gels use silica as an abrasive to help polish teeth. Pastes use calcium carbonate to the same end. Simply a matter of preference for the brusher. For some reason nearly every kids' toothpaste (Colgate Barney, Oral-B Rugrats) is a viscous gel--especially perplexing since thick gels are ineradicable when smeared across a sink top. Consistency has a direct impact on ...

Ease of squeeze: Some brands offer smooth, even flow from the tube; others do not. Crest is the standard here, while Colgate products tend toward runniness. The outlier: Rembrandt Age Defying Adult Formula Toothpaste (don't ask about the "Age Defying" part). This product was so thick that it refused to come out of its tube, even when squeezed with both hands at once. My researchers quickly dubbed it "the sword in the stone." Only stomping on the tube with a shod foot produced any results, and those meager. One shudders to imagine an actual aged person attempting to use this toothpaste.

Illustration by Michael Sloan

Packaging: The main choice here is screw top or flip top. Flip tops make more sense, as you can open the tube and squeeze it with one hand and you'll never drop a tiny toothpaste cap behind your toilet. But one packaging design thinks out-of-the-tube entirely: Mentadent's stand-up pump (Mentadent Advanced Whitening, Mentadent Crystal Ice). The Mentadent pump is just like the monolith from 2001, if the monolith were white instead of black and emitted a fluoride toothpaste instead of consciousness-altering rays. When you press down on top of the pump, two separate substances emerge from two separate and concealed tanks. One tank holds paste, the other gel, and the two strands join on your brush in beautiful harmony. The pump also offers superb ease of squeeze. To be clear: Mentadent toothpastes are no better clinically than the CVS brand--they're just cooler looking.

Color: Most brands opt for classic titanium white or translucent blue-green. Aquafresh Baking Soda stands out with a barber pole stripe of jade and crimson. Colgate Baking Soda & Peroxide is a sickly, opaque green. Colgate Barney (for kids) is neon pink.

Taste: After sampling more than 35 different toothpastes, my researchers and I came to some conclusions about taste. A traditional minty zing is good. But it must have a real bite so your mouth feels clean. Compare Rembrandt Natural and Rembrandt With Baking Soda: The baking soda paste is not overpowering, but it bites just enough to let you know it's there. The natural paste, meanwhile, lacks all bite, and your mouth feels dirtier after you've brushed. The foaming action of baking soda in this case makes all the difference. A severely biteless paste such as Colgate Platinum Whitening Mild Mint can be retch-triggering. Some further observations:

Generally, "natural" pastes (Tom's of Maine Natural Toothpaste) taste awful, first because they lack bite but also because they use "natural" flavoring ingredients such as papaya (Rembrandt Natural). You may think you want to brush your teeth with papaya, but you don't. Rembrandt Age Defying, when finally coaxed from its tube, tasted like rancid cinnamon and smelled of Ben-Gay--a miserable paste by any measure. Aquafresh Whitening Striped Gel is zesty and clean-feeling with good ease of squeeze and little aftertaste--a solid entry. Cool Mint Listerine Tartar Control Gel is a minty and pleasant concoction, unlike the mouthwash. Crest Gum-Care tastes repulsively buttery at first, then slightly bilious--its lingering aftertaste makes your teeth feel chapped. Finally, kids' toothpastes all taste like bubble gum. Again, you may think you want to brush your teeth with bubble gum, but unless you're under 10, you don't.

Our clinical champion, Colgate Total, got mixed reviews on taste. It could have used more bite, and it tasted a bit medicinal. The clear winner on aesthetics in general: Mentadent Crystal Ice. Researchers likened it to "brushing with Altoids" and claimed it cleared out nasal passages. The baking soda in Crystal Ice made my mouth foam like a rabid animal's, leaving my teeth feeling reborn. Couple this with the pump technology and the combination of gel and paste, and we have a hands down winner.

If you missed the sidebar on differing fluoride concentrations, click here.