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1 June 1990 Holodent system: a new technique for measurement and storage of dental casts
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A system for producing holograms and for three dimensional measurement of dental casts is described. Measurements were performed on a metal testpiece with sharp welldefined contours and on a dental cast. Measurement of the testpiece gave a precision of 0.02 0.11 mm for x, y and z coordinates. Corresponding figures for the dental cast were 0.03 0.43 mm. Precision was higher for the testpiece than for the dental cast, highest for the x and y coordinates and satisfactory for the z coordinates. No difference was found if the hologram was superimposed on the object or two holograms were superimposed on each other. Holograms of dental casts solve storage problems by replacing space consuming models.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hans Ryden and Birgit Martensson "Holodent system: a new technique for measurement and storage of dental casts", Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990);


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