X-rays are one of the most common diagnostic tools used by dentists. The pictures taken by X-rays help dentists to diagnose problems such as tooth decay and potential tumors. Dentists usually use two types of X-rays, intraoral and extraoral. Intraoral X-rays place the film inside of the mouth, which allows for the detection of cavities. Extraoral X-rays place the film outside of the mouth and focus on the jaw and skull, which can detect impacted teeth and examine the development of the jaw.
Thanks to technological advances, most X-rays have become digital. Because of these improvements, there are some key advantages to using digital X-rays. Digital X-rays do not require chemical processing, and therefore, there is no delay in the development of the pictures. They also provide a sharper picture that can be adjusted to allow the dentist to view necessary details, and compare them to previous X-rays. Digital X-rays can also be stored and shared with other doctors and dentists much easier as well, for example through the use of email, to provide a better visual for the patient.
Digital X-rays have cut about 90% of radiation exposure, making them much safer. However, there is still some risk to the radiation exposure in X-rays. While the risk is believed to be based on multiple exposures, and not a single X-ray, dentists will only use X-rays when there are key advantages to getting better diagnostic information. If you have any concerns about using X-rays, or you are pregnant, make sure to speak with your dentist at your next visit.
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