1. A computer-implemented method comprising: identifying a three-dimensional anatomical landmark of a three-dimensional dental model, the three-dimensional anatomical landmark being deficient of volumetric data; identifying a two-dimensional anatomical landmark of a two-dimensional intra-oral photograph that corresponds to the three-dimensional anatomical landmark of the three-dimensional dental model; projecting the two-dimensional intra-oral photograph onto the three-dimensional dental model; and calculating the three-dimensional anatomical landmark from the projection of the two-dimensional anatomical landmark of the two-dimensional intra-oral photograph.