3D surface imaging technologies include Moiré topography, laser scanning, and three-dimensional stereophotogrammetry. Although Moiré topography presents the advantages of low-cost and non-invasiveness, its facial reconstruction is still not intuitive and lacks sensitivity. Laser scanning is high-precision, realistic, and efficient in threedimensional reconstruction but can easily damage the eyes. Only capture surface morphology renders the observation of soft tissue texture difficult. Moreover, longer capture time is likely to increase motion artifacts. Three-dimensional stereophotogrammetry offers significant advantages, such as safety, non-invasive, rapid capture speeds without the risk of motion artifacts, data storage convenience, and ease of inquiry, which enables subsequent and repeated analysis of archived images without contact with the inspected objects. This approach is more convenient for communication between doctors and patients and benefits the design and adjustment of the patient's individual treatment plan. Three-dimensional stereophotogrammetry also renders future remote online clinical diagnosis and treatment possible and may also become a routine examination for oral and maxillofacial reconstruction.
