Should I be worried about the dark lines between the filling and tooth? (photos)

Hello, I am planning on getting two crowns on teeth 2 and 3. After the dentist finish the core build-up, I notice that there was a black line between the filling and the teeth. Should I be worry about it?

Doctor Answers 1

Black stains

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It's not usually an issue. Stained dentin can be sound and strong. Your dentist tests it before completing the work. 

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