X-rays have found an important application in orthodontics since their introduction in dental medicine. Although the three-dimensional structures are shown two-dimensionally by using panoramic radiographs and cephalograms, they are very important for the diagnosis of malocclusion. 3D images represent an important role in the diagnosis today and will even more in the future. This refers to the 3D CT image that enables the realistic look of anatomical structures. The limiting factor in the use of the CT in dentistry is the radiation of the device that is greatly reduced by the use of CBCT's. Its size is adjusted for working in a dental office. Likewise, the work has been greatly facilitated by the use of virtual dental models. Orthodontists no longer need a large space for storage of plaster models as it enabled storage in a computer. The diagnosis itself and the treatment planning by simulation gives us the ability to predict the future shape of the patient. When complicated cases occur, sending virtual models by e-mail facilitates our communication with colleagues. The CAD/CAM system has enabled the development of aligners, orthocaps and Incognito lingual technique for teeth correcting. Metallic structures are not visible in all three techniques which makes them extremely attractive for patients. It seems that in the future they will represent an important orthodontic methods because the aesthetics is becoming much more important to the patients. Using 3D stereophotogrammetry method is very important. Of the more recent recording methods it is destinguished by not having a harmful radiation as the CT devices and by not being harmful to the eyes as the application of laser scanners. It's mostly used in the face photo shooting for tracking progress during orthodontic treatment as well as for transfering plaster models into digital form for gnatometric measurements.