There are other methods for diagnosing caries based on different forms of laser light. One such technique is based on the translucency of the teeth. The light is within the near infrared light (NIR) area. A product named DAIGNOcam (diagnostic camera) is using this technology. The light is led in a hand piece held against the tooth. The tooth is illuminated and the caries lesions can be seen like dark spots on a computer monitor screen. The technique is mainly used in adult patients and permanent teeth. However, there is no complete evaluation of how well the technology diagnoses caries in milk teeth. From a radiation hygiene point of view, it is particularly important to reduce the amount of X-rays to young individuals. X-rays are often experienced as difficult by younger children, which leads to poorer diagnostics. It is important to identify early caries in milk teeth as these teeth have thinner enamel and a more "porous" dentin. This may lead to that caries progress much faster thus more difficult to fix. This in turn leads to a risk of toothache and that the damage becomes so extensive that the tooth must be removed.