Hi dear
You have a lot of stains and deposits in your lower front teeth.this happens due to improper cleaning of teeth or if you have any habit of chewing pan or something else.Due to which you have developed gum infection.
Next Steps
you need to see a dentist for thorough cleaning of your teeth.
Health Tips
if you have any bad habit of eating harmful things please stop immediately. please start brushing twice daily and also gum massaging with your finger. also use betadine gargle twice daily