A method and/or system generates a video of teeth of an individual over time. In one example, images comprising teeth of an individual are received, wherein the images are arranged in a sequence and each image is associated with a different stage of treatment of the teeth. One or more of the images are modified and/or replaced to align the images to one another. One or more synthetic images are generated, wherein each synthetic image is generated based on a pair of sequential images in the sequence and is an intermediate image that comprises an intermediate state of the teeth between a first state of a first image of the pair of sequential images and a second state of a second image of the pair of sequential images. A video is then generated that comprises the images and the one or more synthetic images.