Methods for orthodontic treatment planning include modifying a digital picture of a patient based on a tooth model produced during simulated orthodontic treatment after movement of at least one model tooth to produce a modified digital image depicting the at least one model tooth after movement. The method includes matching and morphing information from the digital picture into the modified digital image. Modifying includes matching a model tooth in the T1 model to a tooth in the digital picture and morphing that information into the modified digital image. Morphing may include projecting a model tooth in the T1 model to an image plane of the digital picture and projecting a model tooth from an intermediate T model to the image plane. Parameterization of the projections of each model may be used to develop a pixel correspondence map, which is usable during rendering of a tooth in the modified digital image.