Why Do My Teeth Have Notches or Deep Lines?

Tooth notches, also known as tooth abrasion or abfractions, are small indentations or grooves that appear near the gum line on the surface of teeth. These notches can be a result of various factors, and addressing them promptly is essential to prevent further damage and discomfort.

Causes of Tooth Notches:

Aggressive Brushing: Brushing teeth with excessive force or using a hard-bristled toothbrush can erode the tooth enamel near the gum line, leading to notches over time.

Bruxism (Teeth Grinding): Grinding or clenching teeth, often involuntarily during sleep (bruxism), can exert excessive pressure on teeth, causing enamel wear and the formation of notches.

Incorrect Tooth Alignment: Malocclusion, where teeth do not align properly, can create stress points on teeth, leading to localized erosion and the formation of notches.

Acidic Diet or Beverages: Frequent consumption of acidic foods or drinks can weaken tooth enamel, making teeth more susceptible to abrasion and notch formation.

Prevention Tips for Tooth Notches:

Use a Soft-Bristled Toothbrush: Opt for a soft-bristled toothbrush and use gentle, circular motions while brushing to avoid excessive wear on the enamel.

Correct Brushing Technique: Brush teeth gently for at least two minutes, angling the bristles at a 45-degree angle toward the gum line to effectively clean without causing damage.

Address Bruxism: If you grind or clench your teeth, speak to your dentist about a mouthguard or other methods to protect your teeth during sleep and manage bruxism.

Balanced Diet: Limit acidic foods and beverages and ensure a balanced diet rich in calcium and other nutrients that support dental health.

Dental Treatment Options for Tooth Notches:

Bonding or Fillings: Dental bonding involves applying a tooth-coloured resin to the affected area to fill in the notch and restore the tooth's appearance and function. Fillings might also be used for more extensive areas of wear.

Veneers or Crowns: Veneers or crowns may be recommended for larger notches or cases where the damage is more extensive. These restorations cover the entire tooth surface, providing protection and improving aesthetics.

Gum Grafting: In cases where gum recession contributes to notches, a gum graft might be recommended to cover the exposed root surface and prevent further erosion.

Lifestyle Modifications: Addressing the underlying cause, such as bruxism, through lifestyle changes or dental interventions can prevent further damage and recurrence of notches.

Seeking Dental Care:

If you notice notches on your teeth, it's crucial to consult a dentist. They will assess the damage, identify the underlying cause, and recommend the most suitable treatment plan to address the issue and prevent further deterioration.

Tooth notches are often a result of avoidable factors such as aggressive brushing or bruxism. By adopting proper oral hygiene practices, seeking professional guidance, and addressing underlying causes, you can prevent and effectively manage tooth notches, preserving the health and integrity of your teeth.

Remember, regular dental check-ups are essential to detect and address dental issues early, ensuring a healthy and radiant smile for years.


This website includes materials that are protected by copyright, or other proprietary rights. Transmission or reproduction of protected items beyond that allowed by fair use, as defined in the copyright laws, requires the written permission of the copyright owners.

Contact Us

Mississauga Dental Arts

(905) 286-1569

Mississauga, ON Dentist
Mississauga Dental Arts
350 Burnhamthorpe Road East #2
Mississauga, ON L5A 3S5
(905) 286-1569