Long in the tooth - best toothbrush in the world

My dentist says the enamel will never be replenished and we have to deal with adult teeth throughout our growthup lives.
I can't believe that after about 80 years of gnashing and grinding my teeth are still in the same shape with no obvious signs of wear and tear. Is he right?
If so, why is my teeth still intact?
Despite the best efforts of your dentist, there is no New lost enamel.
When the tooth breaks through the gums, its enamel formation has stopped and it will no longer be in contact with cells that can repair or reshape the teeth.
So, fortunately, in fact, the outer layer of the tooth is the hardest tissue in the body.
It is 96% ha crystal by weight and the rest is organic material and water.
The loss of this crystal structure occurs mainly in three ways: Wear, enamel wear through the teethto-
Contact with the tooth surface, such as grinding;
Wear and tear, represented by the outside, such as hard-
Toothbrush;
And erosion, acid de-mining effect on enamel crystals.
These acids may come from foods such as carbonated drinks or citrus fruits, although those who experience gastric reflux may also be the culprit.
Tooth decay is due to the acid produced by the bacteria in our mouth when we feed them sugar that destroys the enamel.
Due to all these processes, enamel will inevitably wear out as it grows older, although this can be kept to a minimum with proper care and attention.
It is worth noting that the fluorine applied to the surface of the tooth can strengthen the enamel and make it more wear-resistant, but there is nothing at the moment to replenish the lost enamel.
Stuart Yeaton oral and facial surgery, Barnet General Hospital, London, UK, dental glaze has never been replenished because glazed cells that form enamel are on the surface of developing teeth.
When the teeth burst into the mouth, these cells are destroyed. Tooth enamel (
(Calcium)
It is the hardest material in the body.
In contrast, the Western diet is usually very soft and contains very little grinding material.
Therefore, there is very little wear and tear, regardless of the need for very little chewing.
More importantly, under normal circumstances, when we swallow, the teeth are only fully exposed to the opposite chin.
During chewing, food between teeth reduces teethto-tooth contact.
Between meals, there is usually a gap of 2 to 3mm between teeth when the chin is resting-Highway space-so there is no wear and tear.
Therefore, in our life, the teeth are not in contact most of the time, so the wear is very small.
However, under psychological pressure, grinding teeth and biting teeth can lead to excessive wear and tear.
A common source of extreme wear is bruxism, where the teeth are ground unconsciously when we sleep.
Philip Taylor retired dental surgeon Kinloss, Moray, UKWe paid £ 25 for every answer published on the New Scientist.
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