What happens when the tooth is hollowed out by the doctor and replaced, and it turns black.

Teeth that have been nerve** will gradually turn black, and they can be changed by internal bleaching or porcelain teeth. The pain caused by inflammation of the tooth nerve is to "hollow out" the tooth, otherwise the tooth will hurt more severely, and in severe cases, it will cause other lesions.

It is inevitable that the dead pulp tooth will turn gray in color. Porcelain teeth or porcelain veneers can be solved.

However, the teeth have been a little loose, and it is necessary to analyze the specific problem on a case-by-case basis. You should go to a regular hospital for a check-up**.

Daqing Dehui Oral Cavity.

Hello! It can be caused by two factors:

2. Teeth blackening after filling caused by operation error: Some people have a gap between the filling material and the tooth due to the doctor's error, resulting in bacteria entering the tooth below the filling from the gap, causing tooth decay and blackening of the tooth. Generally, the tooth nerve is necrosis after trauma or dental disease, and the blood extravasation after the rupture of blood vessels causes the teeth to change color gradually, and in severe cases, they can fall out later.

At this time, you should do a root canal**, if you think that the teeth are blackened and affect the appearance, then you should do crown repair after the root canal**, which is what we often call making a braces.

Smoking, drinking tea, cola and eating coloured foods in our daily activities leave pigment on our teeth, which over time will gradually turn the surface of the teeth black or yellow.

This is another significant cause of teeth blackening. The darkening of teeth caused by the above factors does not need to be filled, but it is not excluded that these precipitated pigments will become the "driving force" behind tooth decay in the future, so people can remove these pigments and plaques in time through tooth cleaning, so as to achieve the purpose of whitening teeth and preventing periodontal diseases such as tooth decay and gingivitis. It can be seen that whether a tooth filling is required if the tooth becomes black is best determined after a comprehensive examination at the hospital.

One possible filling material is mercury, which is black in nature, so it looks like the filled tooth is black. The second possibility is that the tooth has been made of nerves**, such teeth have no nutritious blood**, and the whole tooth will turn black and gray after a long time. There is also a kind of caries that is not completely cleaned when the tooth is filled, or the inside of the filled tooth will look black if it is decayed again, so it is better to go to the hospital for a clear diagnosis in order to treat the symptoms**.

If the color of the resin is well chosen, and the cavity is not very deep, especially if the lip side of the front teeth is not damaged, it can be basically invisible. At present, the materials for dental fillings in our hospital are basically made of resin.

Nowadays, light-curing resins are often used as filling materials. In this case, if the decay is mild, light-curing resins can be used, and if the decay is large, you need to consider a full-crown restoration such as a porcelain crown. Light-curing resin can maximize the preservation of teeth and restore the beauty (of course, some imported resins should be used).

If you make up for the blackening, it may be secondary caries, so you have to hurry up and re-**!

If the filled tooth falls out, it should be felt. The places that have been filled have been ground when they are filled, and the other teeth are relatively flat, and if the filled teeth are lost, there will be a pit or a small hole.

Just lick it with your tongue and you can feel it. You said that there is no black in it but white, which means that it has not been lost for a long time.

At this time, you should go to the dentist and fill it up again, otherwise the place will get bigger and deeper.

Dental fillings are still very necessary, so I will excerpt some knowledge about dental fillings and learn them together.

At the time of tooth decay, some newly discovered caries are sometimes found to be very large, mainly due to the following:

1.Pit and fissure caries: small black spots are found on the affected tooth surface, and large holes are found after drilling, which is due to the arrangement of the glaze columns in the groove.

2.Adjacent caries: When caries occurs in adjacent areas, patients with superficial and intermediate caries are asymptomatic, the marginal ridge is not destroyed, and patients are not easy to find caries. As caries progresses, a large cavity of caries appears once the marginal caries collapses.

When caries occurs under occlusal surface pits and fissures, there is only one small black spot on the surface, but the caries under the surface enamel (the other end of the enamel column) can be very large. If we don't pay more attention, it will be difficult to find the caries, and even some caries patients have penetrated into the pulp, causing severe pain and need**. In addition, when suffering from glaze caries, the patient does not have any symptoms, and the patient does not know it.

Once conscious symptoms appear, at least the caries is moderate to deep. In most cases, pulpitis and periapical inflammation are already present.

Therefore, we should go to the hospital regularly (half a year to a year) for early diagnosis, early **, good effect, less pain, and low cost. The damage to teeth caused by dental caries gradually develops from the surface to the inner surface, and is divided into superficial, medium and deep caries. In general, when the tooth is shallow caries, the enamel is destroyed and the patient has no subjective pain symptoms.

If left untimed**, the lesion will progress deep into the tooth and then form medium caries, deep caries, and even pulpitis. Once you develop pulpitis or inflammation of the apex, the pulp** can cause great pain to the patient. Therefore, if you find tooth decay, you should repair it in time, even if it is not painful.

Generally, there are three causes of tooth blackness after filling:

1) It is easy to turn black after the doctor performs nerve killing on the tooth;

2) Doctors use amalgam as a filling material, which will make the teeth black after a long time; If you use resin that meets the required strength, the color of the tooth can be the same as that of the tooth, and this problem will not occur.

3) Because there is a gap between the filling material and the tooth, bacteria and other bacteria enter the tooth below the filling from the gap, causing tooth decay and blackening of the tooth. At this point, it should be re-a**.

Data**Department of Stomatology, Shuguang Hospital, Shenzhen.