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Proceedings Paper

Holodent system: a new technique for measurement and storage of dental casts
Author(s): Hans Ryden; Birgit Martensson
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Paper Abstract

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.

Paper Details

Date Published: 1 June 1990
PDF: 5 pages
Proc. SPIE 1200, Laser Surgery: Advanced Characterization, Therapeutics, and Systems II, (1 June 1990);
Show Author Affiliations
Hans Ryden, Karolinska Institutet (Sweden)
Birgit Martensson, Karolinska Institutet (Sweden)

Published in SPIE Proceedings Vol. 1200:
Laser Surgery: Advanced Characterization, Therapeutics, and Systems II
Stephen N. Joffe M.D.; Kazuhiko Atsumi M.D., Editor(s)

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