The need for dental x-rays depends on each individual dental health needs. Your dentist and dental hygienist will recommend necessary radiographs/x-rays based on the review of your medical and dental history, dental exam, signs and symptoms, age consideration, and risk for disease. Bite-wing x-rays (x-rays of top and bottom teeth biting together) are recommended annually to detect cavities. Panoramic radiographs are recommended to give an overview of the jaws and are particularly useful when examining wisdom teeth or developing teeth. This x-ray would be reassessed only every five years or so unless there is a specific issue of concern, like unexplained pain or erupting wisdom teeth.