You looked in the mirror recently and noticed a black line has formed at the base of your dental crown. While it may seem unusual, it’s actually common with older dental crowns. This black line not only reveals your dental work but keeps your smile from looking its best. Fortunately, your dentist is able to easily address the issue and restore your tooth so it matches your natural surrounding teeth. Read on to learn what causes a black line to appear around your crown and how your dentist can help to get rid of it!