Accurate diagnostic imaging is an essential factor in orthodontic diagnosis and treatment planning. Cone Beam Computed Tomography (CBCT) was introduced in dentistry in 1998, and it has revolutionized dentistry by providing invaluable assistance in orthodontic diagnosis and treatment planning. CBCT images offer significantly more detailed information than conventional 2D radiographs and are easy to use. With CBCT, images of the head and neck can be visualized in all three planes, providing precise measurements with minimal increase in radiation dose. CBCT is particularly advantageous over routine radiography in specific cases such as cleft palate patients, canine impaction, assessment of unerupted tooth position, supernumerary teeth, identification of root resorption, and planning orthognathic surgery, where conventional radiography cannot provide satisfactory diagnostic information. It can alter diagnosis and treatment decisions, making it a crucial tool for orthodontists. The aim of this article is to provide a comprehensive overview of CBCT imaging and its application in orthodontics.