Is there any way to correct receding gum line?

Hi,

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I checked your given picture (attachment removed to protect patient identity).

Unfortunately, there is nothing better you can do but visit a dentist and get scaling or cleaning of this hard plaque and tartar done as soon as possible. It is plaque that gets hardened, turns into tartar and starts pushing gums down the neck of the tooth, and this will eventually cause loosening of teeth. So, it is better to get it cleaned. Better to be safe than sorry. You can do saline water mouth rinses for arresting of gum recession till you get an appointment of the dentist. (Take a 1/4th teaspoon of salt in a cup of lukewarm water and do its gargles for 2 to 3 minutes).

Stay happy and blessed.

Take care.