EUROPA > DG Health and Consumer Protection > Public Health  Contact | Search | What's New? | Subscribe | Site Map | Index 
Blanqueadores Dentales inicio
CCPC (2007)

Resumen & Detalles:
GreenFacts (2007)

Blanqueadores dentales y productos de higiene bucal con peróxido de hidrógeno

4. How much hydrogen peroxide is an individual exposed to when using dental products?

4.1 What is the level of exposure when using toothpastes and mouth-rinses containing hydrogen peroxide?

Toothpastes and mouth rinses may also contain low concentrations of hydrogen peroxide as a disinfectant to prevent plaque and inflammation of the gums.

Studies have shown that hydrogen peroxide present in toothpaste is rapidly broken down by the saliva and that other toothpaste ingredients, such as fluoride or sodium bicarbonate do not interfere with this process. One study found that 70% of the hydrogen peroxide was broken downduring the first minute of brushing.

Some of the toothpaste and mouth rinse used is swallowed:

Summary table of clinical studies using hydrogen peroxide toothpastes 

Summary table of human safety data of hydrogen peroxide in mouth-rinses 

Several clinical trials were conducted with toothpastes and mouth rinses containing hydrogen peroxide over several weeks and months. All these studies seem to have been conducted or sponsored by manufactures of oral hygene products.

Studies on humans repeatedly using oral health products containing hydrogen peroxide have shown that:

During the 1990s millions of units of toothpastes containing 0.75% hydrogen peroxide were sold in the USA. This market experience indicates that toothpastes containing 0.75% hydrogen peroxide are well tolerated, with one adverse effect reported for 100 000 sold products (between 1991 and 1994). This rate of reporting and the nature of the reports were similar to that for other toothpastes marketed in the USA. More...


4.2 What is the level of exposure during a tooth whitening treatment?

It is difficult to estimate the exposure to hydrogen peroxide during tooth whitening treatment, which may vary with the product and the concentration used.

When people undergo tooth whitening treatment, the amount of hydrogen peroxide that is released into the saliva depends mostly on the bleaching system used and depends only partially on the amount of saliva produced by the individual.

During the first 30 to 60 minutes of tooth whitening treatment, the concentration of hydrogen peroxide at the gums and in the saliva falls very quickly, because hydrogen peroxide is rapidly broken down.

A tooth whitening strip with 6% hydrogen peroxide contains about 12 mg of hydrogen peroxide. A study estimated that people using 4 such tooth whitening strips per day, swallow about 4.8 to 11.4 mg hydrogen peroxide per day. However, since the flow of saliva – which affects the calculations – is likely to be greater when the strips are applied, actual exposure may be greater. Swallowing an entire strip – which can occasionally happen – results in an exposure of about 12 mg hydrogen peroxide.

The estimated exposure to hydrogen peroxide through tooth whitening mouthguards containing 10% carbamide peroxide is about 1.68 to 4.2 mg per day considering that a person swallows 10 to 25% of the whithening gel in the mouthguard during application. The techniques used to make custom-fitted mouthguards and the tooth whiteners themselves have improved recently. Hence, modern treatments use a smaller amount of whitener than older methods.

Total amount of hydrogen peroxide swallowed appears to be similar for tooth whitening strips and mouthguards. More...

GreenFacts asbl/vzw posee los derechos de autor de la Estructura de Tres Niveles utilizada para la divulgación de esta opinión del CCPC.