The frequency of getting x-rays of your teeth often depends on your medical and dental history and current condition. Some people may need x-rays as often as every six months; others with no recent dental or gum disease and who visit their dentist regularly may get x-rays only every couple of years. If you are a new patient, your dentist may take x-rays as part of the initial exam and to establish a baseline record from which to compare changes that may occur over time.