Summary:There has always been a saying on the Internet that due to the high hardness of calcium carbonate, toothpaste using calcium carbonate as an abrasive will hurt t
There has always been a saying on the Internet that due to the high hardness of calcium carbonate, toothpaste using calcium carbonate as an abrasive will hurt the teeth very much and should be avoided as much as possible. Is this really the case?
It's not toothpaste abrasives that can hurt your teeth.
In addition to the chewing movement, brushing is also a major cause of abrasive wear on teeth. The abrasion of teeth by brushing is related to many factors such as the abrasiveness of toothpaste abrasives, the hardness and end shape of toothbrush bristles, as well as the pressure, duration and frequency of brushing. The factors related to the abrasiveness of abrasives include the hardness, shape, size and concentration of abrasive particles.
Obviously, whether brushing your teeth will cause damage to your teeth cannot be concluded just by confirming a certain abrasive component.
As far as the hardness of abrasive particles is concerned, calcium carbonate is actually a softer abrasive, while the so-called hydrated silica is harder. The abrasiveness of calcium carbonate is higher than that of hydrated silica, mainly because calcium carbonate crystals can be columnar or diamond-shaped, while hydrated silica particles are spherical. As a result, the abrasiveness of softer calcium carbonate is higher than that of harder hydrated silica.
Then, since it is not possible to draw conclusions from the particle hardness alone on the abrasiveness of the friction agent, it may not be appropriate to draw conclusions from the particle shape alone.
In addition, some toothpastes do not use only one abrasive ingredient, but use different abrasive ingredients in combination to learn from each other's strengths and avoid weaknesses. Hydrated silica is widely used as an abrasive, mainly because of its stability and compatibility (it can coexist peacefully with other toothpaste ingredients such as fluoride).
Therefore, calcium carbonate toothpaste is not a so-called "teeth hurting" toothpaste. Toothpaste that meets manufacturing standards is safe and reliable in most cases, so don't worry about choosing the wrong toothpaste. The key is to pay attention to the selection of appropriate brushing tools, that is, the choice of toothbrush, as well as specific brushing methods, such as the position and angle of the toothbrush, the strength of brushing, and so on.
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