Black Lines on Teeth; The black lines on teeth may be caused by amalgam tattoos or amalgam tattoo pigment. The diagnosis will depend on the location and appearance of the black line on teeth. Amalgam tattoos are also associated with other signs and symptoms which help in the diagnosis.
Investigations
An intraoral examination is necessary to find out whether the black line on teeth is an amalgam tattoo. The appearance of the black line on teeth may give an idea of what it could be. An x-ray may be needed to confirm the diagnosis.
Other tests that may be done include:
Complete blood count
Blood chemistries, including liver enzymes and kidney function tests
Diagnostic tests such as cultures, biopsies or gastric analysis might be required to determine the cause of the underlying condition, if known
Black lines on teeth can be caused by a number of different things. In some cases, it may be a sign of decay or cavities, but not always.
The most common cause of black lines on teeth is that the tooth enamel has broken down, exposing the dentin below. Dentin is naturally yellow and appears darker when exposed. The enamel may be breaking down due to a number of factors, including poor oral hygiene, a diet high in sugar and acid, medication use, or damage to the tooth such as grinding or trauma.
Another cause of black lines on teeth is amalgam fillings. While amalgam looks silver when it is first placed in the mouth, over time it will darken as it oxidizes. This oxidation causes the filling to turn darker shades of gray and black, which can stain the surrounding areas of enamel.
If you notice black lines on your teeth, you should see your dentist as soon as possible. They will examine your teeth thoroughly to determine what is causing the discoloration and make treatment recommendations based on that diagnosis.
Have you ever noticed black or dark lines on your teeth? Maybe it’s gray, or even brown. If you have, there’s a good chance that the stain is from something you eat and drink every day: coffee.
Coffee stains teeth because coffee is acidic, which makes staining easier. Sugar doesn’t help either. But coffee has more to offer than just stains. It can also cause decay, especially if you’re not protecting your teeth properly.
What causes the stains?
Tooth enamel wears away over time, revealing a material called dentin underneath. Dentin is yellow instead of white like enamel, so it makes your teeth appear more yellow overall. Enamel also becomes thin with age, meaning that the dentin is even easier to see.
The reason why coffee stains teeth is that it contains tannins — organic substances that give coffee its distinct color and taste and can make staining easier for other substances as well. Coffee is also slightly acidic, which means
The black line on teeth is due to excessive fluoride. It is also termed as dental fluorosis. Dental fluorosis does not lead to loss of teeth but it may lead to discoloration of teeth and make them look ugly. There are many causes for dental fluorosis such as fluoride present in water or fluoride containing medicines or dietary supplements given to children during their growing years in the form of drops, tablets or gels. Fluoride can also be present in toothpaste and mouth washes. When a child is exposed to excessive amount of fluoride during the time when his/her teeth are developing then it leads to dental fluorosis. In some cases, even mild exposure to excess fluoride can cause this type of discoloration.
Dear Doctor,
I had a crown fitted on my front tooth in 2004. The gum around the tooth has now receded and the black line under the crown is visible. What can I do to get rid of it?
Many Thanks,
Sarah-Jane
Dear Sarah-Jane,
You certainly have an annoying problem with the metal that shows through in your gums. You could try to cover up with some tooth colored material. A composite filling can be placed in the space next to your crown. If you have enough space, then a temporary veneer can be placed over the two teeth at once.
The problem with this approach is that over time there will be more recession, and your problem will come back again. The only way to permanently fix this issue is to replace the crown with a non-metal one (porcelain or zirconia). This solution is both cosmetic and functional. It can also improve the overall appearance of your smile if you are unhappy with it for other reasons.
Tooth enamel is the hardest substance in the human body. You probably don’t think about it often, but without your tooth enamel, teeth would be sensitive, discolored and more susceptible to decay.
The thin outer layer of tooth enamel can become worn away due to vigorous brushing and corrosive dental products such as mouthwash. When this happens, the dentin layer underneath — a softer tissue containing microscopic tubules that lead to the center of the tooth — becomes exposed and may appear yellowish-brown or black. It’s important to determine whether your tooth discoloration is due to demineralization of enamel or damage to dentin in order to effectively treat it.
In the 1950’s and 1960’s, people with the misfortune to survive a nuclear blast would often die of acute radiation syndrome (ARS). This sickness is caused by exposure to high doses of radiation in a short period.
There are three phases of ARS: prodromal, latent and manifest illness. The prodromal phase occurs immediately after exposure and lasts for up to two days. During this phase, people experience nausea, vomiting, fatigue and fever.
The latent phase comes next. There are no symptoms at all during this phase that can last from one day to several weeks. After this time has passed, the final stage of illness begins.
In the manifest illness stage, people develop symptoms that are often similar to those found in other illnesses such as flu or gastroenteritis. These include nausea and vomiting, diarrhea, headache and fever. More severe cases can lead to death.
Black lines on Teeth Remove

Black lines on teeth are the result of a number of factors. Most notably, these black lines on teeth are usually caused by improper brushing of the teeth. When brushing your teeth, it is best to use a soft-bristled toothbrush and brush gently. Using a hard-bristled toothbrush, or brushing too hard can cause the enamel to wear down, which eventually leads to black lines on teeth.
Another common cause for black lines on teeth is the nose. Often times, when the nose is congested or stuffy, people will breathe through their mouth instead of their nose. This can lead to dry mouth, which causes the gums to recede and reveal more of the roots of the teeth. These exposed roots are often dark in color, making them appear like a black line on tooth.
A third cause of black lines on teeth is decay between the teeth. This decay may not have progressed far enough to form a cavity yet, but it is still there nonetheless. The decay in between the teeth forms a thin stripe that may appear as a black line on tooth, especially if it is not visible from all angles
Black lines on teeth, also known as black triangles, can be a concern for many people. These gaps or spaces between the teeth can appear very unattractive and make a person self-conscious about their smile or laugh. Gapped teeth are not unique to one age group. But a number of different factors can cause them, including the size and shape of your teeth, your gums, and even your jawbone.
What Causes Black Lines Between Teeth?
In most cases, black lines on teeth occur because the gum tissue between two or more teeth has receded from the root surface. This recession exposes part of the tooth’s root surface that is naturally darker than the rest of the tooth. In some cases, this darkened area may appear as a black line between two teeth or it may look like a dark spot or triangle at the gumline of one tooth.
In some cases, black lines on teeth occur as a result of poor oral hygiene habits. If plaque and calculus build up around a tooth at the gumline over time, it may eventually calcify (harden) into tartar. This hardened tartar often appears as small dark spots on one side of the tooth nearest to where it meets the gums. When enough tartar accumulates around one
A black line on teeth is usually a stain from food or drink. It can also be from smoking, mouthwashes, medications, or even certain toothpastes. If it’s not a stain, the line could be from a chip in your tooth enamel. The line is most likely harmless and will go away with some brushing. If it doesn’t go away, the cause may be more serious and you should see your dentist right away.
There are several causes of black lines or spots on teeth — some are temporary and harmless while others could be a sign of something more serious that requires treatment.
What to do:
Brush your teeth gently with a soft-bristled toothbrush to remove any debris that may have built up on your teeth.
Floss to remove any food particles that may have become stuck between your teeth.
Rinse your mouth with an antibacterial mouthwash or salt water to kill bacteria that may have been growing in your mouth. You can also use baking soda mixed with water as an alternative mouthwash to kill bacteria in the same way.
What not to do:
Don’t use a hard-bristled toothbrush for cleaning; this can cause damage to the enamel on your teeth
Aesthetically, black lines on your teeth can be unsightly and draw attention because of their stark contrast to the rest of your pearly whites. There are a number of reasons why you might have black lines on your teeth, ranging from poor oral hygiene habits to diseases and disorders.
Black Lines Caused by Teeth Grinding
Teeth grinding is known as bruxism. It’s a condition that causes you to grind your teeth or clench them together, typically while you’re sleeping. Teeth grinding is often caused by stress, sleep disorders or medical problems such as Parkinson’s disease, dementia and gastroesophageal reflux disease. If you’re a teeth grinder, you may be causing damage to the enamel on your teeth. The damaged enamel can turn a dark color, resulting in black lines on your teeth. Also, if you’re grinding because of stress or anxiety, it can cause your jawline to become tense and possibly result in enlarged muscles around the jawline. This can make the black lines appear more pronounced. The only way to get rid of these black lines caused by grinding is to stop grinding.
Black Lines Caused by Poor Hygiene
If you don’t take good care of your mouth and teeth through regular
Teeth whitening is a cosmetic dentistry procedure and should be done by a professional. There are several procedures available for teeth whitening, depending on your budget, the amount of discoloration, and how white you want your teeth to be. Your teeth will not become perfectly white from any procedure.
A dentist can use either a hydrogen peroxide gel or laser bleaching to remove stains from your teeth. The results may vary depending on how stained your teeth are. If you have sensitive teeth, your dentist can use desensitizing gel before the procedure as well as fluoride afterwards to reduce sensitivity.
Black lines on Front Teeth

Black lines on front teeth have several causes. The most common is a build-up of stain along the gum line where it meets the tooth. This can happen when you brush your teeth too aggressively, because your gums recede and expose more of your yellow dentin layer underneath.
But sometimes that black line is more serious — it could be a crack in the tooth. This is especially true if you notice a black line only on one tooth. The best way to tell is to look at the area with a dental mirror or let your dentist take a look.
If it’s just a build-up of stains, there are a few ways to remove them:
Brush with whitening toothpaste two or three times per week.
Use an interdental brush to clean out the area where the gum meets the tooth (this will also help prevent future staining).
See your dentist for professional teeth cleaning and polishing.
Black lines on front teeth are a common problem. If you have black lines on front teeth, there may be several reasons causing this situation.
As you know, the teeth are composed of three main tissues: enamel (outside), dentin (middle) and pulp (nerve and blood vessels inside). The enamel is the hardest tissue in the world and its color is white or bluish gray. Dentin is yellowish brown because it contains a lot of calcium salts. When the enamel is lost, the yellowish dentin can be seen and the teeth appear to be yellowish.
Causes of black lines on front teeth
Black lines on your front teeth are most often caused by one of two things:
Tetracycline staining: This is when you take tetracycline antibiotics during tooth development which results in colored streaks in your teeth. Tetracycline stains are most noticeable in children who were exposed to this drug after age 8 but before age 14. However, these stains can also occur if a pregnant woman takes tetracycline.
Black lines on front teeth can be from:
1) Stains from smoking, which are actually dark brown to black, but can appear to be black (these are usually more obvious on the edges of the tooth);
2) Stains from food (e.g., coffee, tea), which can be removed with dental bleaching;
3) Enamel hypoplasia, which is an abnormality of enamel formation (the enamel is thin and discolored);
4) A permanent filling placed in a front tooth that is not well matched to your tooth color (this can be replaced with a “tooth colored” filling); or
5) Fluorosis, which is caused by receiving too much fluoride while the teeth were forming.
A black line on the front teeth, or a dark coloration on the tooth surface, can be an alarming sight for anybody. The most common cause of a black line on the teeth is bruxism. Bruxism is the technical term for grinding your teeth. It can also include any unconscious clenching and/or grinding of the teeth.
The most common complaint from patients who grind their teeth is that they wake up in the morning with sore jaws and headaches. Teeth grinding may also lead to a number of different dental problems including:
enamel wear and tear on your teeth
gum recession
chipped, cracked and broken teeth