The main difference between PAP and PAP+ whitening products is that the PAP+ contains an additional ingredient called nano-hydroxyapatite (nHap). Aside from that one distinction, they are virtually identical formulation wise.

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However, the inclusion of the hydroxyapatite will bestow an additional benefit, namely an increase in product safety while teeth whitening.

Attributes

PAP

PAP+

Phthalimidoperoxycaproic acid

Yes

Yes

Nano-hydroxyapatite

No

Yes

Safety

Safe for use

Safest

Table of Contents:

• Both contain PAP

• PAP+ is different

• Enamel safety

Both contain PAP

Both PAP and PAP+ teeth whitening products utilize phthalimidoperoxycaproic acid (PAP) as the primary whitening agent. They use this in lieu of hydrogen peroxide to bleach out tooth stains and make your teeth whiter.

How phthalimidoperoxycaproic acid whitens teeth

PAP whitens teeth by oxidizing stains on teeth but it does so without forming free radicals, which is different from peroxide.

Instead of free radicals, PAP oxidizes the conjugated double bonds of stain molecules via epoxidation.

• PAP converts the carbon-carbon double bond into an epoxide.

• Epoxides look distinctively like a triangle on molecular formulas.

• End result is that the double bond has been converted to a single bond.

Ultimately, the loss of the double bond results in a decolorization of the stain.

How hydrogen peroxide whitens teeth

Hydrogen peroxide can oxidize tooth stains because it forms powerful oxidizing free radicals upon decomposition.

These free radicals convert the double conjugated bonds of stain molecules into single bonds.

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As stain molecules lose double bonds, they will absorb less light and reflect more of it. Thus, these dark colored chromogens will become whiter in color.

Only PAP+ contains nano-hydroxyapatite

The big difference between PAP and PAP+ is that the latter has an additional ingredient, nano-hydroxyapatite, while the former does not.

PAP+ products:

• Hismile whitening pen

• Hismile whitening toothpaste

The nano-hydroxyapatite is a remineralization agent and is made of the same type of material as your teeth. It's just that it is nano-sized hence the name. In other words, it's purpose is to reverse cavities similar to fluoride.

What the nHap does not do is contribute to the whitening process. It is the PAP that is solely responsible for whitening the teeth.

Difference in enamel safety

A big selling point of PAP+ whitening is its enhanced safety for your enamel. It is often marketed as an alternative to peroxide that is safer for your teeth. A bonus perk is that it can also desensitize your teeth which is helpful since bleaching can cause teeth sensitivity.

How it's safer

The reason PAP+ is less harmful for your teeth is because it contains nano-hydroxyapatite, a tooth remineralization agent. In other words, it can neutralize the demineralization process of the whitening process thus negating any harmful effects.

How the process works:

1. Teeth whitening will cause enamel demineralization (loss of minerals).

2. However, the nano-hydroxyapatite will initiate remineralization (regain of minerals).

In summary, the demineralization from PAP whitening gets balanced out or neutralized by remineralization from nHap.

Anti-sensitivity

Teeth sensitivity is a well known adverse effect of whitening. Fortunately for you, the ADA states that it usually goes away after about 4 days once you cease using the product. What makes PAP+ unique is that the nano-hydroxyapatite has a desensitizing effect which is why all toothpastes with it can be used for sensitive teeth.

How it works:

• Exposed open dentinal tubules can cause teeth sensitivity.

• nHap will occlude the open tubules thus blocking nerve stimulation.

It works in a very similar way in how stannous fluoride blocks sensitivity. They both occlude patent dentinal tubules thus preventing stimuli from interacting with the tooth nerve.

Is it a fair comparison?

Unfortunately, the alleged claim that PAP+ is safer than hydrogen peroxide (HP) in whitening teeth is an unfair comparison. It is comparing a whitening+remineralization product (PAP+) vs a whitening only product (HP).

Yes, studies have shown that when hydroxyapatite is added to PAP, there is no resultant decrease in enamel microhardness after whitening.

Regardless, that is an unfair comparison because for a study to be equivalent, it should be PAP+ vs hydrogen peroxide plus nano-hydroxyapatite. That way, both bleaching agents have a remineralization agent in it.

With that being said, there are plenty of peroxide based whitening products which have fluoride in it, a different remineralization agent. Colgate makes all of their optic white toothpastes with that very formulation, hydrogen peroxide + fluoride.

There are also professional whitening products which already include fluoride in it.

In case you were wondering, fluoride in whitening gel does not impede nor affect its efficacy in bleaching your teeth.

Verdict

PAP+ whitening products are identical to PAP products except it contains an additional ingredient, nano-hydroxyapatite. What this extra ingredient does is make the whitening process safer and less sensitive since it is a tooth remineralization agent as well as a desensitizer.

For the record, I love the fact that Hismile is adding nano-hydroxyapatite to all of their whitening products. It does make it safer and frankly I don't understand why more manufacturers don't do it... If you want to check out a PAP+ product, Hismile has a whitening toothpaste which does it.

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PAP vs. Peroxide: Why PAP Is Better for Sensitive Teeth

Teeth whitening strips have become a convenient and popular method for achieving a brighter smile at home. These strips are coated with whitening agents that work to remove stains from the surface of your teeth. Traditionally, many whitening products use peroxide as the active ingredient. While effective, peroxide-based whitening strips can have downsides, particularly for individuals with sensitive teeth. The peroxide penetrates tooth enamel to break down stains, which can lead to increased sensitivity, making teeth feel sore or causing "zingers"—sharp pains associated with weakened enamel. For those seeking a gentler option, PAP teeth whitening offers a promising alternative. PAP (Phthalimidoperoxycaproic acid) is a non-peroxide compound that whitens teeth effectively without causing the discomfort often associated with traditional methods. PAP works on the surface of the enamel to remove stains without compromising its integrity, making it an enamel-safe whitening strip solution. This is especially beneficial for individuals in need of teeth whitening strips for sensitive teeth. The benefits of PAP whitening are clear: it provides a gentle teeth whitening experience with no sensitivity, even for those with sensitive teeth and gums. As a safe teeth whitening solution, PAP-based strips have become a preferred choice for fast, effective results without the common drawbacks of peroxide. When comparing PAP vs. peroxide whitening, PAP stands out for its ability to whiten while minimizing sensitivity. For those looking for fast teeth whitening strips that are both gentle and effective, PAP whitening products offer a reliable, comfortable solution.

Title: Choosing the Best Whitening Strips for Sensitive Teeth

When it comes to achieving a brighter smile, teeth whitening strips are a popular and convenient choice. However, for people with sensitive teeth, finding the right product can be a challenge. Traditional whitening strips, often containing hydrogen peroxide, can lead to discomfort, causing many people to shy away from using them. This is where PAP teeth whitening comes in as an ideal solution. What is PAP Teeth Whitening? PAP, or phthalimidoperoxycaproic acid, is a newer and gentler alternative to traditional peroxide-based whitening agents. It effectively whitens teeth without causing the irritation or sensitivity commonly associated with peroxide. PAP works by breaking down stains on the surface of the teeth while being gentle on the enamel and gums. Why PAP is Ideal for Sensitive Teeth People with sensitive teeth and gums often experience discomfort after using whitening products. However, PAP whitening strips are formulated to minimize this issue. They provide a fast and effective whitening solution without causing the typical sensitivity associated with traditional peroxide whitening strips. These PAP strips not only offer immediate results but are also safe for daily use without worrying about aggravating sensitive teeth. Enamel-Safe Whitening Strips Enamel safety is a key concern when choosing a whitening product. The best PAP whitening strips are designed to be gentle on your teeth's enamel while still delivering a brightening effect. Many users find that PAP whitening strips, such as GleeKiss whitening strips, offer a perfect balance of effectiveness and safety, as they won't erode the enamel. Whitening Strips for Sensitive Gums and Teeth Gums can also be a sensitive area when it comes to whitening treatments. The beauty of PAP whitening is that it works effectively while being gentle on your gums. Unlike peroxide-based treatments, which may irritate sensitive gums, PAP-based whitening strips help maintain gum health while giving you the brighter smile you desire. The Bottom Line For anyone looking to whiten their teeth without dealing with the irritation of traditional peroxide whitening products, PAP whitening strips are the perfect solution. Whether you have sensitive teeth, gums, or both, PAP whitening strips provide a fast, effective, and enamel-safe way to brighten your smile without the discomfort.