Blog - Tetracycline stained teeth
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Replacing Dental Crowns with Black Lines at the Gum
What’s the Black Line Under Old Crowns? Here’s a case from a few years ago where the patient was really unhappy with his old, yellow, ugly old Porcelain-to-Metal crowns, partially because of the dark grey line at the crowns’ edges. That black line between the gum and crowns was from the metal inside the crowns […]
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