Hello, black lines could be because of stains on your teeth. Visit a dentist and get your scaling and polishing done. get an x-ray done. if there is a cavity, get it filled. if there is infection to root of the tooth, you need to get it treated. then get a crown placed over it.Brush your teeth twice daily, you can use any good sensitive toothpaste. Night brushing is very important. Floss regularly. Rinse after every meal. Visit dentist every 6 months.
Answered2017-04-05 12:33:40
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