Radiology finds its application in the diagnosis and monitoring of orthodontic problems, ever since the discovery of X-rays in 1895. X-rays are used to identify irregularities in the position of the teeth and various pathologies and genetic problems. Advances in technology, such as the invention of digital radiography and 3D imaging, have enabled a new way of more detailed insight into the structure of bones and teeth and more precise therapy planning. A panoramic image provides a complete view of the teeth and surrounding structures, while cephalometry is used to analyze the position of the jaws and teeth. CBCT provides a high-resolution three-dimensional image of the jaws and teeth and is useful in complex cases. Intraoral X-rays capture details directly inside the oral cavity and are used for accurate caries diagnosis and therapy monitoring. Modern radiological techniques enable more precise diagnostics and more effective orthodontic treatments.