If you’ve noticed a dark or black line forming at the base of your dental crown—especially near the gumline—then you’re far from alone. This is an issue that many patients who’ve undergone restorative dentistry in the past seem to report, and it commonly occurs with dental crowns that have a metal base. Needless to say, this can detract from your smile’s appearance, not to mention call into question the remaining durability of your existing crown. Fortunately, while it’s not a serious, health-threatening issue, it’s still something that your dentist can easily assist you with. Here’s what you need to know.
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