Craze lines are multiple tiny cracks that only impact the outer enamel. They can occur on the front or back teeth but are more noticeable if they appear on your front ones.

So what causes them? They’re typically caused by years of chewing and regular wear and tear of teeth. Some seminal studies also connect their occurrence with other habits or conditions like biting nails or bruxism. Bruxism is the grinding, gnashing, or clenching of teeth. It can cause many problems, including the wearing down of enamel.

The AAE notes that craze lines are very common in adult teeth and typically are shallow and cause no pain. They are usually only a cosmetic concern.

That said, if the cracks do extend beyond the enamel, you should seek treatment immediately. A cracked tooth will often cause tooth sensitivity and, if untreated, may result in tooth extraction. Your dentist will help you figure out if the cracks are craze lines that are only impacting your enamel.

How do you prevent getting craze lines? Unfortunately, craze lines may happen naturally as you get older. That said if they’re being caused by another habit or behavior, like bruxing, addressing that issue can help ensure you don’t get any more craze lines. For instance, using a night guard can prevent you from grinding your teeth at night.

How do you fix the craze lines in your teeth? If the appearance of your craze lines is bothering you, one solution is to get veneers. Veneers can restore chips, cracks, or an uneven appearance and make your teeth look youthful again.

While the sudden appearance of craze lines on your teeth may be unsettling, they are most likely just a cosmetic concern. Consult with your dentist to ensure that the cracks don’t go beyond your enamel, and remember, whether or not you decide to get veneers, your smile is still beautiful!

Oral Care Center articles are reviewed by an oral health medical professional. This information is for educational purposes only. This content is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your dentist, physician or other qualified healthcare provider.