Oral hygiene

Dental discolouring

The colour of tooth enamel varies from person to person, sometimes even from tooth to tooth. Furthermore, a series of external or intrinsic (metabolic) factors may be the cause of a worsening in the colour of said enamel.


Oral hygiene certainly plays a leading role in fighting both external and, in particular, intrinsic causes of discolouring (e.g. lack of fluoride and aging).
It is possible to restore the natural whiteness of teeth by using a non-abrasive whitening product on a daily basis and for prolonged periods of time.

Teeth are alive!

Most people think of teeth as dead tissue. In actual fact, teeth are made up of living tissue subject to wear and tear, and are therefore continuously renovated in their structure with the introduction of new substances. In this way, enamel is constantly renewed and in equilibrium with external elements. This is why dental health largely depends on diet and on the introduction of external strengthening and protective substances, such as those present in toothpaste.

A healthy mouth begins with fluoride

Various studies have confirmed the importance of F ¯ ions in making tooth enamel even more solid, resistant and insoluble. For fluoride to be effective, it needs to be bio-available to teeth, and in quantities sufficient for their needs.
When a high concentration of F ¯ ions is present in the area surrounding teeth, it deposits in the form of calcium fluoride and fluorapatite. F ¯ ions are then gradually released from these local deposits, and absorbed in the enamel's surface, reinforcing its structure.
Furthermore, fluoride also has a direct bacteriostatic effect.
It is important, therefore, for the toothpaste to channel sufficient amounts of fluoride, thus creating a suitable environmental condition (neutral pH, reduced presence of bacteria) for absorption.

The abrasiveness of a toothpaste: RDA

RDA is a technical parameter measuring the level of abrasiveness of a toothpaste, i.e. the likelihood of its removing a part of the enamel surface while brushing. This abrasive effect may be mechanical, due to the use of hard and highly granular cleansing particles, or chemical, due to the use of aggressive whiteners which may corrode the enamel.
In order to achieve rapid results, whitening toothpastes often have a high RDA. Obviously, even though this might provide instant gratification from an aesthetic point of view, it is very harmful to dental health, and in the long run is also counterproductive from an aesthetic point of view.


BlanX toothpastes have a low to medium-low level of abrasiveness, and, thanks to their composition, they are capable of optimising cleansing without damaging tooth enamel in any way.