Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain black stains is a result of a combination of many things in the mouth related to saliva, bacteria and foods. They are extrinsic stains and can be seen on all the teeth and it is due to
plaque and
tartar deposits over the teeth due to improper brushing or no brushing and the staining occurs due to coloured toxins released by bacteria, coloured foods and drinks etc..
You should consult a Paediatric
dentist and get the Scaling of his teeth done so that they get cleaned..
Encourage him to brush his teeth by explaining the importance of brushing and providing him with him attractive toothbrushes and toothpaste tubes available in market for kids which can create interest in brushing..
Maintenance of good teeth and hygiene practice if incorporated in your child now can help in a better overall oral heath throughout life..
Hope this information helps..
If you find the answer helpful please give me a Five Star Review and click on found the answer helpful as a token of appreciation..
Thanks and regards..
Dr.Honey Nandwani Arora..