Yellow teeth could be due to various reasons
1. Excess of flouride in our drinking water, normally it has to be 1000ppm, but if it exceeds this level then it discolors our teeth. It does not happen over night, but if we have been consuming such water since childhood then it is more likely to show up.
2. Plaque, a thin of tartar which deposits on our teeth immediately after brushing and later calcifies to form hard calculus due to the chemical reaction with food, saliva and oral bacteria.
3. Some habbits like, smoking tobacco chewing, alcoholism and excess of tea and coffee can cause yellow or brownish stains.
4. Some medicines like tetracycline can cause yellow stains
Next Steps
A thourough scaling (professional cleaning) by a dentist will help control calculus build in the mouth, if the stains are due to flourosis then a.ho.e bleaching with the help of your dentist can help
Health Tips
Avoid exceeds of cigarettes, alcohol, tea a d coffee, brush a d floss regularly, rinse immediately after eating or drinking anything, visit your dentist at least every 6 months