Black lines are generally painless, but no matter how you brush them, they can't be wiped clean.

What's going on here? Anyway, okay?

What is black silk?

I. Pigment precipitation

The surface of our molars is not flat, but there are some.

Pits and cracks.

Although the gap between these pits and grooves is relatively small, when we eat food containing

Pigmented food, coupled with poor tooth cleaning, makes pigment easy.

It is easy to deposit in pits and gullies, and it will become a black line after a long time.

↓ Solution:

If it's already formed pigment, brush your teeth.

Cleaning is useless and can only be solved by washing teeth.

Tooth decay (pit and fissure caries)

There is generally no obvious cavity in the early stage of occlusal caries.

There are many black lines on the occlusal surface, and the lines are opposite.

Rough, bacteria are easy to attach, and if it is not cleaned properly, it will damage the teeth.

The tooth structure is normal, thus forming pit and fissure caries. So the black line may also

It is an early manifestation of pit and fissure caries.

↓ Solution:

With decayed teeth, it is recommended to see a dentist as soon as possible. Filling according to the tooth condition.

Dental or other treatment.

Causes of pit and fissure tooth decay

① It is easy to hide food residues in the pit and fissure.

The occlusal surface area of molars is large and increases like a millstone.

Chewing area, increasing friction, but there are cracks on it.

Grains, potholes and food residues are easy to accumulate and cannot be cleaned up.

For a time, it became a paradise for bacteria.

② Cleaning is inconvenient.

Because the big teeth are located at the back, it is inconvenient to brush their teeth, resulting in big teeth.

Some parts can't be brushed, which increases the incidence of tooth decay.

How to prevent black lines from appearing?

First, brush your teeth scientifically.

It is recommended to use Pap to brush your teeth at least twice a day.

Floss assisted cleaning.

Second, wash your teeth regularly.

Washing teeth once or twice a year can effectively control dental plaque and clean dental plaque.

Attachment of pigment and calculus.

Third, check your teeth regularly.

Many dental caries are difficult to find with the naked eye, and doctors need the help of professionals.

It is recommended to have your teeth checked at least once a year.

Four, pit and fissure closure

After three and a half years old, the baby's deciduous molars can be sealed.

The first molar (6~7 years old) and the second molar (1 1~ 12 years old) are intact.

After eruption, pit and fissure sealing is also recommended.