What are black triangles?

Take a look at your teeth in the mirror. Do you notice any gaps that look like small black triangles? This occurs when the space between two teeth is not filled with gum tissue. Black triangles are known as open gingival embrasures. This is a common condition; however, if not managed, it can lead to more serious oral health issues.

Causes

Black triangles can occur for a few reasons, one of the most common being a natural factor. The natural shape, size, and position can cause a dark triangular shadow. There are rectangular teeth, oval teeth, and triangular teeth. Triangular teeth have a wider edge, which creates space for those black triangles. And the more triangular the tooth’s shape, the more pronounced the black triangle will be.

Gum recession can also be a cause of a black triangle. When gum tissue pulls away from the tooth, or recedes, it exposes more of the tooth’s root, creating a gap between the two teeth. In addition to gum recession, there is periodontal disease. Periodontal disease is an infection in the gum and bone that supports the tooth. This can be a result of poor oral hygiene. Symptoms of this disease may include loose teeth, bleeding, swollen gums, or bad breath. It is important to brush and floss regularly to prevent plaque and bacteria from building up, which can lead to periodontal disease and gum recession, which can lead to black triangles.

Another cause of black triangles is overly aggressive brushing, which can cause gum recession. You might also develop black triangles after orthodontic work, such as braces or aligners, and in that case, you might have to repeat the treatment to close the gap.

Treatment Options

There are a few options to consider when it comes to treating black triangles, and this depends on the severity of the condition and what the client’s needs are.

Dental Bonding: This is one of the least invasive treatment options to close the gap, especially in cases where the black triangle is very small. Dental bonding is a cosmetic procedure that involves a tooth colored composite. The resin is matched to the natural color of the tooth, and a liquid is applied to help the material stick to the tooth. It is then shaped to the desired shape and cured with a specific light.

Veneers or Crowns: In a more advanced case, a porcelain crown or veneer is the best option. A veneer is custom-made of porcelain or composite that is bonded to the front of the tooth to improve the appearance and close the black triangle. They are very durable and can last between 10 and 20 years. Crowns are very similar to a veneer, but instead cap the entire tooth. In many cases, crowns are more functional, whereas veneers are primarily for cosmetic reasons.

Braces or Aligners: Shifting the position of the tooth might be necessary to bring the teeth together and close the black triangle.

While appearance is a common reason many want to correct a black triangle, it is recommended for oral health reasons as well. Talk to your dentist to come up with the right treatment plan depending on the severity of your case.

Related Article: What Causes Black Triangles?