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.
From a general perspective we recommend X-rays every 24 months for the in the mouth 'bitewing' types.
Full mouth X-rays can be taken less often, depending on individual risk, every 3-5 years.
Besides these points, we often need to X-ray the teeth to simply find out more about them. If you have a particular issue, X-raying the area will often give us a very good idea as to what is or is not happening, that my be influencing your symptoms.