Dental crowns are used to restore a tooth to its normal size, function, and appearance after extensive damage due to trauma, tooth decay, or a dental procedure like a root canal. While these restorations can be fantastic solutions to these injuries, some of them can begin to develop black lines around their edges as they age. This makes it obvious that the patient has undergone dental work and can make it harder for them to be proud of their smile. Here’s why that can happen and what you can do to prevent or fix it.
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