We use X-rays at Big Grins because they show our dentist bone and tooth structure through skin and tissue. They are instrumental in detecting weak spots or cavities between teeth. Dental X-rays use a small amount of radiation to yield this image on a film. The amount of radiation is so small it is difficult to measure, but it is on the order of the same amount you get from a few hours playing in the sun. Dr. Greg Evans uses digital radiography in Fort Collins, Colorado, because they use computers instead of film and are much more sensitive. They require about one-tenth the amount of radiation to produce an image. Digital X-rays also do not require film processing, which creates lead and silver waste.