Fiber optic displacement sensor for scanning and reconstructing occlusal surface of human tooth

In dentistry, often dental radiography is related to teeth occlusal surface, which can be used for diagnostic and treatment purposes. Nonetheless the exposure of X-Ray dose may limit the usage of this technique. This paper presents the image construction from the occlusal surface of human teeth. The principle of the surface construction is from the exploitation of reflected light intensities along the occlusal surface of human teeth. The image of occlusal surface is constructing back using simple MatLab software. The measured diameter from the images of occlusal surface for molar A and molar B is to be 7.0 mm and 7.5 mm, respectively, which is exactly the same when measured with micrometer. The average surface roughness for each tooth sample namely molar A and molar B is obtained to be 742 μm and 975 μm, respectively. Such results are useful for detecting the occlusal topography and surface profile of human teeth.