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Proceedings Paper

Dental scanning in CAD/CAM technologies: laser beams
Author(s): Cosmin Sinescu M.D.; Meda Negrutiu; Nicolae Faur; Radu Negru; Mihai Romînu; Dalibor Cozarov
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Paper Abstract

Scanning, also called digitizing, is the process of gathering the requisite data from an object. Many different technologies are used to collect three dimensional data. They range from mechanical and very slow, to radiation-based and highly-automated. Each technology has its advantages and disadvantages, and their applications and specifications overlap. The aims of this study are represented by establishing a viable method of digitally representing artifacts of dental casts, proposing a suitable scanner and post-processing software and obtaining 3D Models for the dental applications. The method is represented by the scanning procedure made by different scanners as the implicated materials. Scanners are the medium of data capture. 3D scanners aim to measure and record the relative distance between the object's surface and a known point in space. This geometric data is represented in the form of point cloud data. The contact and no contact scanners were presented. The results show that contact scanning procedures uses a touch probe to record the relative position of points on the objects' surface. This procedure is commonly used in Reverse engineering applications. Its merits are represented by efficiency for objects with low geometric surface detail. Disadvantages are represented by time consuming, this procedure being impractical for artifacts digitization. The non contact scanning procedure implies laser scanning (laser triangulation technology) and photogrammetry. As a conclusion it can be drawn that different types of dental structure needs different types of scanning procedures in order to obtain a competitive complex 3D virtual model that can be used in CAD/CAM technologies.

Paper Details

Date Published: 11 February 2008
PDF: 9 pages
Proc. SPIE 6843, Lasers in Dentistry XIV, 68430E (11 February 2008); doi: 10.1117/12.764829
Show Author Affiliations
Cosmin Sinescu M.D., Univ. of Medicine and Pharmacy Victor Babes (Romania)
Meda Negrutiu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Nicolae Faur, Politehnica Univ. Timisoara (Romania)
Radu Negru, Politehnica Univ. Timisoara (Romania)
Mihai Romînu, Univ. of Medicine and Pharmacy Victor Babes (Romania)
Dalibor Cozarov, Dali's Dentech (Romania)

Published in SPIE Proceedings Vol. 6843:
Lasers in Dentistry XIV
Peter Rechmann; Daniel Fried, Editor(s)

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