Craze lines are small vertical cracks in the enamel of your teeth. They aren’t painful, but they can be unsightly.‌ Craze lines aren’t usually a health problem. But what causes them might be. Dentin.

Craze lines are hairline cracks in teeth. They don’t often turn into deep cracks, and are considered cosmetic in nature. But they can lead to cavities, if you don’t have proper dental hygiene. Craze ...

Drs. Mandy and Robert Shearer agree they have a common question often asked by their patients: What is this black line on my tooth around my crown? If you're concerned that something is amiss, chances ...