These are natural deposits that are formed in every individual.
You will have to maintain good oral hygiene (refer my blog for oral hygiene care in the link below)
Ultrasonic scaling is a simple painless procedure. Should be done every 6 months by every individual. Scaling is not costly.
You cannot completely avoid tartar, just reduce its speed of deposition by taking proper care of oral hygiene.
If scaling is not done then you will suffer from bad breath, gingivitis, periodontitis, tooth decay, early loss of teeth.
Next Steps
Visit dentist for ultrasonic scaling.
Health Tips
"10 Dental Commandments for Happy Teeth!" by Dr.Rashmi Bamane - https://www.practo.com/healthfeed/10-dental-commandments-for-happy-teeth-40426/post