Included are embodiments of product performance and perception modeling. At least some embodiments include receiving a product geometry for a simulated toothbrush, the product geometry defining a physical product characteristic of the simulated toothbrush, receiving an environmental geometry for a simulated mouth, the environmental geometry defining a physical mouth characteristic and a perspective characteristic of the simulated mouth, and applying a simulated plaque indication layer in the simulated mouth. Similarly, some embodiments include applying a predetermined brushing stroke of the simulated toothbrush in the simulated mouth, determining sensory performance of the simulated toothbrush from the predetermined brushing stroke, and generating a scorecard indicating the sensory performance of the simulated toothbrush.