Attrition is a form of tooth wear that occurs when teeth repeatedly come into contact with each other during normal function or habits such as grinding or clenching. This contact causes the enamel, the outer protective layer of the tooth, to slowly wear down over time. It most commonly affects the biting surfaces of teeth and can create flattened or smooth areas. As enamel wears away, the underlying dentin may become exposed. Dentin is softer than enamel and can wear more quickly once exposed. Over time, this process may lead to increased sensitivity or changes in how the teeth fit together. In many cases, attrition develops gradually and may not be immediately noticeable. If this process continues, significant tooth structure can be lost, potentially affecting bite alignment and function. The severity of attrition varies depending on factors such as bite forces, habits, and tooth alignment.
UnderstandingÂ
Attrition
Clinical Significance
Can lead to tooth sensitivity, loss of tooth structure, changes in bite, increased risk of fractures, and aesthetic concerns.
Common Causes
Normal chewing over time, teeth grinding or clenching (bruxism), misaligned bite, excessive bite forces
Signs & Symptoms
Possibly none, or flattened tooth surfaces, shortened teeth, sensitivity, worn edges, changes in bite, exposed dentin
How It's Detected
Clinical exam, visual inspection of wear patterns, patient history of grinding or clenching, bite analysis
Treatment Options
Monitoring, night guards for grinding, bite adjustment, restorative treatment (bonding, crowns), orthodontic treatment if needed, no treatment in mild cases
Benefits to Treatment
Reduces further wear, protects tooth structure, improves comfort, restores function and appearance, prevents complications
Prevention
Use of night guards, stress management for clenching, regular dental visits, early correction of bite issues, avoiding excessive force on teeth
Frequently Asked Questions
What is the difference between attrition and erosion?
Attrition is caused by tooth-to-tooth contact, while erosion is caused by acids that dissolve tooth structure. In many cases, attrition results in flat, worn surfaces, whereas erosion often creates smooth, rounded areas due to chemical processes. Both conditions can occur together but have different underlying causes and management approaches.
Is attrition normal?
Some degree of attrition is considered a normal part of aging due to regular chewing over time. In many cases, mild wear does not cause problems. However, excessive attrition, especially from grinding or clenching, can lead to noticeable damage and may require evaluation and management.
Can attrition be reversed?
No, attrition cannot be reversed because lost tooth structure does not regenerate. However, treatment can help protect the remaining tooth and restore function or appearance. In many cases, dental restorations or protective devices can help manage the condition and prevent further wear.
What causes excessive attrition?
Excessive attrition is often caused by habits such as grinding or clenching, known as bruxism. In many cases, bite misalignment or uneven forces can also contribute. Stress and certain sleep-related conditions may increase the likelihood of grinding, leading to accelerated wear.
How is attrition treated?
Treatment depends on the severity of wear. In many cases, a night guard is recommended to protect teeth from grinding. For more advanced wear, restorative treatments such as bonding or crowns may be used to rebuild lost structure. Addressing underlying causes helps reduce further damage.