Hi there,

As a dentist I thought I'd put in my 2 cents worth. I wouldn't worry about the chip unless it seems like its worrying him. When there's enamel missing from a tooth it can be a little senstive. Things that will make it more sensitive are acidic things - so fruit and fruit juice especially (the only fruit that isn't overly acidic is bananas). The other ladies are right, stomach acid can weaken enamel on teeth as can eating a lot of fruit. Dairy on the other hand is great for teeth and cheese actually strengthens enamel.

HTH