Hello! I see you are 34year old...time to develop concern about good oral hygiene.
The deposit is tartar/calculus which would require scaling in a Dental office. If not removed, it will irritate your gums and cause bone loss with subsequent weak teeth.
Also, look for appropriate Brushing technique, your Dentist will help you with that.
Next Steps
Dental office :Scaling
Health Tips
Good oral hygiene. Don’t discontinue Brushing even if it bleeds. Need of the hour: Scaling /Cleaning!