Is DIAGNOcam Comparable to Bitewing Radiographs as a Diagnostic Method for Approximal Caries in Primary Teeth?

BACKGROUND: To diagnose caries in clinical practice today, a combination of clinical examination with mirror and probe, and in sometimes x-ray images are used. For surfaces in contact with other teeth X-rays (preferably bitewing) are often required. Even though the radiation doses in bitewings are small, it is important to weigh risks against the benefit to avoid unnecessary radiation. 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. OBJECTIVE: To investigate diagnostic accuracy / precision in caries diagnosis between teeth using DIAGNOcam in milk teeth comparable to caries diagnostics using bitewing x-rays. RESEARCH QUESTIONS: * Is DIAGNOcam a reliable diagnostic method for diagnosing caries in between teeth (approximal caries) in milk teeth? * How does child experience caries diagnosing performed with DIAGNOcam compared to X-rays? INVESTIGATION VARIABLES: Caries data are recorded according t