Applications of 3D imaging in orthodontics: part II.

The first part of this article has illustrated some of the principles in 3D imaging and the possible applications of 3D facial imaging in orthodontics. Part II explores the different techniques of 3D imaging of the teeth, as well as the recent efforts to create the ‘virtual orthodontic patient’ by using 3D soft and hard tissue data. A brief overview of some of the commercially available 3D-based technologies, such as OrthoCADTM and Invisalign is given at the end.