Neem stem is protective.
You can use it.
But plaque and tartar builds due to some internal and external reasons:
- smoking
- drinking too much tea coffee
- tap water
- bad oral hygiene
- stomach acid
- indigestion
Next Steps
If you have any of the above said issue, try to get them resolved and get your teeth cleaned by a professional intially.
Once the teeth are clean you can maintain the cleanliness with regular brushing.
Health Tips
Try to rub rocksalt on gums and teeth.
It gives you instant whitening and cleaning.