Regardless of the technology used, every orthodontic treatment should be based on adequate diagnostics and precise planning. Today, practitioners have improved tools at their disposal for accurate diagnosis such that they are no longer dependent on just two usually handheld plaster casts, panoramic radiographs, cephalometric radiographs and photographs. Instead, they can utilise, among other things, scanning procedures with exact assignment of the mandible to the maxilla in centric occlusion, CBCT and digital joint tracking systems, which also and indeed especially include centric relation in the diagnosis. Orthodontic treatment is also becoming more efficient in terms of technology, less invasive and more patient-friendly, whether using fixed appliances, functional orthodontics or aligners.