Chromatic dispersive confocal technology for intra-oral scanning: first in-vitro results

T. Ertl; M. Zint; Annelene Konz; E. Brauer; H. Hörhold; Raimund Hibst

doi:10.1117/12.2079008

24 February 2015 Chromatic dispersive confocal technology for intra-oral scanning: first in-vitro results

T. Ertl, M. Zint, Annelene Konz, E. Brauer, H. Hörhold, Raimund Hibst

Proceedings Volume 9306, Lasers in Dentistry XXI; 93060B (2015) https://doi.org/10.1117/12.2079008
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

Various test objects, plaster models, partially equipped with extracted teeth and pig jaws representing various clinical situations of tooth preparations were used for in-vitro scanning tests with an experimental intra-oral scanning system based on chromatic-dispersive confocal technology. Scanning results were compared against data sets of the same object captured by an industrial μCT measuring system. Compared to μCT data an average error of 18 – 30 μm was achieved for a single tooth scan area and less than 40 to 60 μm error measured over the restoration + the neighbor teeth and pontic areas up to 7 units. Mean error for a full jaw is within 100 – 140 μm. The length error for a 3 – 4 unit bridge situation form contact point to contact point is below 100 μm and excellent interproximal surface coverage and prep margin clarity was achieved.

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T. Ertl, M. Zint, Annelene Konz, E. Brauer, H. Hörhold, and Raimund Hibst "Chromatic dispersive confocal technology for intra-oral scanning: first in-vitro results", Proc. SPIE 9306, Lasers in Dentistry XXI, 93060B (24 February 2015); https://doi.org/10.1117/12.2079008

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KEYWORDS

Teeth

Scanners

Bridges

Confocal microscopy

Data modeling

In vitro testing

Colorimetry

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