How to tell whether a tooth is a baby tooth or permanent tooth?

Not without an exam: You will need to see a local dentist to tell you if a tooth is a baby tooth or a secondary tooth. This cannot be answered over the internet without visualization.

Yes: Most of the time it can be decided just by looking at it. Sometimes, however, we need to get an xray.

Dental anatomy: You can tell by the size, shape, color, position, your child's age when tooth erupted, and appearance on x-ray. Ask hour dentist, he or she will know.