Hi
Not just the black spots in his centrals, there are active caries on the adjacent teeth as well (note the chalky white areas near the gums). They will fall much later. He will benefit from restorations (fillings) as well as active fluoride therapy, and a complete caries risk assessment.
Next Steps
Take a pea sized amount of toothpaste and keep brushing his teeth twice daily. After brushing, once he spits the froth out, DO NOT RINSE with water. Let some toothpaste stay over the teeth. Non-ayurvedic toothpastes (colgate, kidodent, pediflor, pepsodent) contain fluoride which will help put
calcium back inside his teeth.
You can visit my clinic in Greater Noida West, for professional fluoride application. I can guide you for further treatment, in person.
Health Tips
If he keeps swallowing the toothpaste, don’t use the fluoride toothpastes. Instead use Pigeon’s fluoride-free toothpaste.