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Why Are My Teeth Getting Shorter and Flatter?

If you’ve noticed your teeth looking smaller, flatter, or more yellow than they used to be, it’s not your imagination — it could be a sign of Check-Up & Clean & Clean-and-clean/”>Check-Up & Clean/”>dental attrition. Many people shrug it off as a normal part of getting older, but there’s more to it than simple wear and tear. Dental attrition isn’t just cosmetic — it can gradually change the shape of your smile, reduce function, and even cause tooth sensitivity or cracks if left unmanaged. In this blog, we’ll explain what dental attrition is, how it affects your oral health, and what you can do about it.

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What Is Dental Attrition and How Does It Start?

Dental attrition is the gradual loss of tooth structure caused by tooth-to-tooth contact. It typically occurs on the biting surfaces of teeth, especially the molars and front incisors. Unlike erosion (caused by acid) or abrasion (caused by brushing), attrition happens due to constant friction between your teeth — most commonly from grinding or clenching, also known as bruxism.

It’s something that tends to develop over time, especially if you unknowingly grind your teeth while sleeping or have an unbalanced bite. 

 

What Makes Dental Attrition Different From Other Tooth Wear?

While all forms of tooth wear can damage enamel, dental attrition has its own unique features and causes. Here’s how it compares: 

Comparison of Tooth Wear Types

Feature Attrition Abrasion Erosion 
Cause Tooth-to-tooth contact Mechanical friction (e.g. brushing) Acidic foods/drinks or reflux 
Location Biting surfaces (occlusal/incisal) Gumline (cervical area) Smooth surface enamel (anywhere) 
Common signs Flattened/short teeth Notches near the gumline Cupping, thinning, smooth texture 
Reversible? No No No 
Prevention approach Bite correction, nightguards Proper brushing, soft toothbrush Reduce acid exposure, use fluoride 

 

What Are the Early Signs That My Teeth Are Wearing Down?

Identifying dental attrition early can prevent larger and more costly issues. Look out for the following changes: 

  • Teeth that look flatter or shorter than before 
  • Yellowing, as enamel wears away and dentine shows through 
  • Tooth sensitivity when eating or drinking 
  • Tiny cracks or chips on tooth edges 
  • A change in the way your teeth fit together 
  • Increased wear on fillings or dental restorations 

 

What Causes Dental Attrition in the First Place?

Attrition isn’t random. There are several contributing factors, often working together: 

  • Teeth grinding (bruxism) – usually during sleep and often linked to stress
  • Misaligned bite – uneven pressure on certain teeth can speed up wear
  • Ageing – natural wear accumulates over decades
  • Tight jaw clenching – often subconscious during the day or while lifting heavy items
  • Habits – such as chewing pens, fingernails, or ice

Even people with otherwise healthy teeth can develop attrition if these risk factors go unchecked. 

 

Can Grinding Really Damage My Teeth That Much?

Absolutely. Regular grinding puts significant pressure on your teeth — up to 200 pounds of force in some cases. Over time, this can: 

  • Flatten your tooth edges 
  • Crack or chip enamel 
  • Create uneven tooth wear 
  • Cause jaw pain or tension headaches 
  • Contribute to Temporomandibular Joint (TMJ) issues 

You might not even know you grind your teeth unless yOur Team spots the signs, or someone hears you doing it in your sleep. 

 

What Happens If I Don’t Do Anything About It?

Ignoring dental attrition can lead to more than cosmetic changes. Left untreated, it may result in: 

  • Weakened teeth – more prone to fractures or chips
  • Loss of vertical height – affecting your smile and facial structure
  • Sensitivity – due to exposed dentine
  • Jaw pain – from changes in how your teeth come together
  • Increased dental work – restorations may wear down faster

The earlier it’s addressed, the easier (and more cost-effective) it is to manage. 

 

What Treatments Are Available for Dental Attrition?

Treatment depends on how advanced the wear is. Your dentist will assess the damage and recommend options like: 

Dr. Mohamed Omar

About the Author: Dr. Mohamed Omar, BDS, MFDS (Edin), FRACDS — Dr. Omar has over 20 years of experience in general and specialist dentistry, with advanced training in dental implants and orthodontics. He is the Principal Dentist at M&M Dental Care in Marsden Park, NSW.