Yes. Your dentist relies on x-ray images to observe areas that cannot be seen with the naked eye. Children may not have to have x-rays done at every visit. However, because their mouths are changing and developing relatively quickly, they may require x-rays more often than the average adult. X-rays allow your dentist to observe areas in which tooth decay may hide, the roots of teeth, the jawbone, and also the position of permanent teeth waiting to come in.