Worn Teeth (Attrition): Causes, Symptoms and Treatment Options
Tooth attrition refers to the gradual wearing down of tooth surfaces through direct tooth-to-tooth contact. This type of wear often occurs when teeth repeatedly rub against each other during chewing or grinding.
Over time, attrition may reduce tooth height and affect the protective enamel layer. Early stages may not cause noticeable symptoms, but progressive wear can lead to sensitivity, changes in bite, and altered tooth shape. Professional dental assessment helps identify tooth wear and determine appropriate management.
Professional Assessment
A thorough clinical examination can evaluate the extent of tooth wear, identify contributing factors, and determine whether protective or restorative measures may be appropriate.
“They identified the wear on my teeth early and gave me a night guard — my sensitivity has improved significantly.”
What Is Tooth Attrition?
Attrition is a type of tooth wear caused by direct contact between opposing teeth. It commonly occurs in people who grind or clench their teeth — a habit known as bruxism — though it can also result from normal chewing over many years. The repeated mechanical contact gradually wears away the enamel, which is the hard protective outer layer of the tooth.
Enamel Gradually Thins
As tooth surfaces repeatedly contact each other, the enamel layer becomes progressively thinner. Once the enamel is worn through, the softer underlying dentine may become exposed. Dentine wears more quickly than enamel, which means that once it is exposed, the rate of wear may increase. This process can alter the shape and height of the affected teeth over time.
Different From Erosion or Abrasion
It is important to distinguish attrition from other types of tooth wear. Erosion is caused by acid dissolving the tooth surface — from dietary acids or stomach acid — while abrasion results from external mechanical forces such as aggressive tooth brushing or abrasive foods. Attrition specifically refers to wear from tooth-to-tooth contact, though multiple types of wear may occur together.
Tooth Shape May Change
In more advanced cases, attrition may noticeably alter the shape and height of the teeth. Biting edges may become flattened or shortened, cusps may be worn smooth, and the overall appearance of the teeth may change. These changes can affect how the teeth come together during biting and chewing, potentially contributing to further uneven wear or bite discomfort.
A can help identify the type and extent of tooth wear and determine whether intervention may be appropriate to protect the remaining tooth structure.
Common Causes of Worn Teeth
Tooth attrition may result from a combination of factors rather than a single cause. Understanding these contributing factors can support discussions with your dentist about the most appropriate management approach.
1Teeth Grinding (Bruxism) During Sleep
Bruxism is one of the most common causes of accelerated tooth wear. Many people grind their teeth during sleep without being aware of it. The forces generated during nocturnal grinding can be significantly greater than those produced during normal chewing, resulting in progressive wear of the biting surfaces. Partners may notice grinding sounds during the night, and patients may wake with jaw stiffness or tooth soreness.
2Jaw Clenching During Stress
Clenching — the sustained tightening of the jaw muscles without the side-to-side movement of grinding — places prolonged pressure on the tooth surfaces. Stress, concentration, and certain lifestyle factors may increase the tendency to clench. While clenching may not produce the same grinding patterns as bruxism, the sustained forces can contribute to enamel fatigue and gradual wear over time.
3Bite Misalignment and Uneven Contact
When the teeth do not come together evenly, certain teeth may bear a disproportionate share of the biting forces. This uneven distribution can cause localised wear patterns, with some teeth wearing more rapidly than others. Bite misalignment may be related to natural tooth position, previous dental work, tooth loss, or gradual changes in tooth alignment over time.
4Age-Related Enamel Wear
Some degree of tooth wear is a natural consequence of decades of chewing. Over a lifetime, the enamel gradually becomes thinner through normal use. This natural attrition is typically slow and evenly distributed, but it means that teeth in older adults may be more vulnerable to additional wear from grinding, clenching, or other contributing factors.
5Long-Term Mechanical Pressure
Habits such as chewing on hard objects, nail biting, or regularly eating very hard foods can place additional mechanical stress on the teeth. While these factors alone may not cause significant wear, they can contribute to the overall burden on the enamel — particularly when combined with other factors such as grinding or an uneven bite.
Multiple factors often contribute to tooth wear simultaneously. A can help identify which factors may be involved and inform appropriate management.
Symptoms Associated With Tooth Attrition
Tooth wear from attrition often develops gradually, and early stages may not produce noticeable symptoms. As wear progresses, patients may begin to notice changes in the appearance, sensitivity, or function of their teeth.
Flattened or Shortened Teeth
One of the most visible signs of attrition is a change in the shape of the biting surfaces. Teeth that were once pointed or had defined edges may appear flatter, smoother, or shorter. This is particularly noticeable on the front teeth and the cusps of the back teeth. The degree of shortening depends on the extent and duration of the wear.
Increased Tooth Sensitivity
As the enamel becomes thinner, the underlying dentine — which is more porous and closer to the nerve — may become exposed. This can result in increased sensitivity to hot, cold, or sweet stimuli. Sensitivity may range from mild and occasional to more persistent discomfort, depending on the extent of enamel loss.
Changes in Bite or Chewing Comfort
Progressive tooth wear can alter the way the teeth come together when biting and chewing. Patients may notice that their bite feels different, that certain foods are harder to chew effectively, or that the teeth no longer meet evenly. These changes may develop so gradually that they are only noticed when they become more pronounced.
Rough or Uneven Tooth Edges
Worn teeth may develop rough, sharp, or irregular edges along the biting surfaces. These uneven areas may catch on the tongue or lips and can feel noticeably different from the smooth surfaces of unworn teeth. In some cases, small chips may occur along the thinned enamel edges.
When Dental Assessment May Be Recommended
While some tooth wear is a normal part of ageing, professional evaluation may be appropriate if you notice any of the following. These signs may suggest that attrition is progressing beyond normal limits and could benefit from assessment and potential intervention.
Teeth appear noticeably shorter, flatter, or worn compared with previous appearance
Tooth sensitivity develops or worsens, particularly to temperature changes
Changes in bite alignment or the way teeth come together are noticed
Jaw discomfort, muscle tension, or grinding symptoms occur
Chewing becomes uncomfortable or less efficient
A partner reports hearing grinding sounds during sleep
Assessment of worn teeth and tooth attrition is available at our London clinic, where professional evaluation can determine the most appropriate course of care.
Management Options for Worn Teeth
Treatment for worn teeth depends on the extent of wear, the underlying cause, and individual clinical findings. The aims of management are to protect remaining tooth structure from further wear, restore tooth shape and function where appropriate, and address contributing factors such as grinding or bite misalignment.
Your dentist will assess the nature and extent of tooth wear and recommend the most appropriate approach based on clinical examination. Treatment depends on clinical findings.
Treatment Approaches
A thorough bite assessment evaluates how the teeth come together, identifies areas of uneven contact, and determines whether bite alignment may be contributing to localised wear patterns. In cases where wear is mild and stable, regular monitoring during routine dental examinations may be the most appropriate initial approach, allowing your dentist to track any progression over time.
For patients who grind or clench their teeth, a custom-made night guard may help protect tooth surfaces from further wear during sleep. The appliance creates a barrier between the upper and lower teeth, distributing biting forces and reducing direct tooth-to-tooth contact. Night guards are made from impressions of your teeth to ensure a comfortable and effective fit.
For teeth with moderate wear, dental bonding or composite fillings may be used to restore lost tooth structure, rebuild worn edges, and protect exposed dentine. This conservative approach aims to restore tooth shape and function while preserving as much natural tooth structure as possible. Bonding materials can be colour-matched to blend with the natural tooth.
In cases where attrition has significantly reduced tooth structure, dental crowns may be recommended to provide comprehensive protection and restore tooth form. Crowns cover the entire visible portion of the tooth, providing structural support and protecting against further wear. The decision to place a crown depends on the extent of wear and the structural integrity of the remaining tooth.
The Role of Bite Protection
For patients whose tooth wear is related to grinding or clenching, protective appliances may play an important role in reducing further damage. Bite protection aims to minimise direct tooth-to-tooth contact and distribute forces more evenly across the dental arch.
Night Guards and Occlusal Splints
Custom-made from impressions of your teeth for a precise and comfortable fit.
Worn during sleep to create a protective barrier between the upper and lower teeth.
May help reduce the forces transmitted to the tooth surfaces during grinding.
Distributes biting pressure more evenly, which may help protect vulnerable areas.
Regular review ensures the appliance continues to fit correctly and function effectively.
Managing Grinding Habits
While night guards address the mechanical aspect of grinding, managing the underlying factors may also be beneficial. Stress management techniques, awareness of daytime clenching habits, and maintaining good sleep hygiene may all contribute to reducing the frequency and intensity of grinding.
Your dentist can assess the extent of wear related to grinding and recommend appropriate protective measures. Regular allow monitoring of wear patterns and appliance effectiveness over time.
Managing grinding habits alongside protective appliances may help reduce further wear and support long-term tooth health.
Temporary Precautions Before Dental Assessment
If you have noticed signs of tooth wear, the following general precautions may be helpful while professional assessment is arranged. These measures do not replace professional dental care.
Recommended
Avoid excessive chewing on very hard foods such as ice, hard sweets, or nuts.
Maintain good oral hygiene with twice-daily brushing using fluoride toothpaste.
Use a soft-bristled toothbrush to minimise additional abrasive wear on tooth surfaces.
Monitor any changes in tooth shape, sensitivity, or bite comfort.
Arrange professional dental assessment if concerns about tooth wear arise.
Avoid
Avoid chewing on hard objects such as pens, pencils, or fingernails.
Do not use over-the-counter night guards without professional guidance on fit.
Avoid ignoring progressive changes in tooth shape or increasing sensitivity.
Do not attempt to file or reshape worn teeth at home.
Avoid delaying assessment if grinding or clenching symptoms are present.
These precautions are general guidance only and do not replace professional dental care. If you are concerned about tooth wear, please contact us to arrange an assessment.
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Assessment for Worn Teeth
If you notice changes in tooth shape, increased sensitivity, or signs of tooth wear, professional dental assessment can help determine whether attrition may be affecting your teeth.
Professional Tooth Wear Assessment in London
Whether you have noticed your teeth becoming shorter, are experiencing increased sensitivity, or have been told you grind your teeth, our South Kensington team can assess the extent of wear and discuss appropriate management options.
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