Black Triangles Between Teeth in 2025: Causes, Treatments & Costs Explained
Rebecca Stanborough
Medical Writer & Health Communications Specialist #Sexual Wellness
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Black Triangles Between Teeth in 2025: Causes, Treatments & Costs Explained

Discover the truth behind black triangles between your teeth, their causes, and the latest effective treatments available in 2025. Learn how to restore your smile and oral health with expert tips and options.

woman examining black triangles between teeth
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In today’s era of flawless, radiant smiles, many individuals are seeking solutions to address dental imperfections that affect their confidence and oral health.

One common dental concern is the appearance of black triangles, medically known as open gingival embrasures, which are gaps forming between teeth near the gum line.

Beyond aesthetics, these gaps can pose significant health risks if left untreated.

Understanding Black Triangles or Open Gingival Embrasures

Black triangles are triangular gaps that develop between your teeth, especially near the gums. Studies show that approximately 67% of adults over 20 experience them.

Recognizing how these gaps form is crucial, as they can lead to further oral complications if ignored.

black triangular gaps between teeth
Black triangles between teeth - GaroManjikian/Shutterstock

Common Causes of Black Triangles

If you start noticing these gaps, it’s essential to consult your dentist promptly. Several factors can contribute to their formation, often linked to gum and tooth health.

Gum Recession

Healthy gums snugly fit around your teeth, filling spaces and protecting roots. However, aging, smoking, and gum diseases can cause gums to recede, exposing tooth roots and creating black triangles.

Bone Loss

Conditions like periodontal disease and osteoporosis may lead to bone loss near tooth bases. This loss often results in gum tissue shrinking, which in turn forms visible gaps.

Improper Dental Hygiene

Overly aggressive brushing or using large interdental cleaners can damage sensitive gum tissue, contributing to the development of black triangles.

Orthodontic Treatments

Braces or other orthodontic devices can sometimes cause small gaps as teeth shift. Research indicates adults with braces have a 22-36% chance of developing these gaps between front teeth.

Triangular Tooth Shape

People with teeth that narrow near the gum line (triangular-shaped) are more prone to black triangles compared to those with rectangular teeth.

Thin Gum Tissue

Individuals with naturally thin gum tissue may experience less gum resilience, making it harder for gums to recover fully after dental procedures, increasing the risk of gaps.

Effective Treatments to Eliminate Black Triangles

Depending on the cause and severity, various treatments can help close these gaps and restore your smile.

Gentle and Proper Dental Care

Following the American Dental Association's advice to floss carefully and brush twice daily can improve gum health and potentially reduce minor black triangles.

Hyaluronic Acid Injections

Recent advances allow dentists to regenerate gum tissue using hyaluronic acid injections, offering a less invasive alternative to surgery with quicker recovery times.

Composite Resin Bonding

Dentists may fill gaps with tooth-colored or pink composite resins, applied in thin layers over months to create a natural look while allowing gums to adapt.

Orthodontic Solutions

Braces or aligners can reposition teeth to close gaps caused by tooth movement, though treatment duration and costs vary.

Porcelain or Ceramic Veneers

Veneers can be bonded to teeth surfaces to mask gaps and improve smile aesthetics, lasting anywhere from 18 months to 20 years with proper care.

Surgical Procedures

For severe gum recession, periodontists may perform tissue grafting or use minimally invasive pinhole surgical techniques to restore gum coverage and close black triangles effectively.

Conclusion

Black triangles between teeth, or open gingival embrasures, are common but treatable dental concerns that affect both appearance and oral health.

Caused by factors such as gum recession, bone loss, dental hygiene habits, tooth shape, and orthodontic treatment, these gaps warrant professional evaluation.

From improved dental care and hyaluronic acid injections to bonding, veneers, braces, or surgical interventions, multiple options exist to restore your smile.

If you observe black triangles forming, consult your dentist to determine the most suitable and effective treatment plan tailored to your needs.

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