Tooth enamel is highly durable and considered to be the hardest substance in the human body. However, not only is it not indestructible, but it can weaken and wear down over time, resulting in tooth sensitivity. For young smiles that are still developing, this problem can create much discomfort. So, what can you do for your child with sensitive teeth? Read on to hear from a pediatric dentist who can explain why it happens and which treatments are most effective.