Will calcium deficiency cause cavities in children?

Hi… I am a proud mother of two kids (twins - a boy and a girl aged 4). Recently while brushing their teeth I have noticed that his teeth has some black spots and I took him to our dentist in Burlington. I was shocked to hear that he had cavities. I never knew that cavities can occur in this age.I used to brush their teeth daily and how is it possible that only he suffers from cavities. Now I am worried about my daughter also. I have heard that calcium deficiency can also lead to cavities. Is it true?

Dear take care and take medicine. You must admit the kids in the learning centre like Cherry Bridge Station. They take care and give the medicine . They also provide the health activities for the healthy growth and learning.