Collimating illumination and piezoelectric transducer based 3D intraoral scanner

Article

Abstract

Due to the restrictions of size and volume on the 3D scanner for dental applications, it is not easy to perform non-contact profile scanning in the mouth cavity. In this paper, a piezoelectric transducer and collimating illumination based 3D intraoral scanner is presented for the measurement of tooth profiles in the mouth cavity. The phase-shifting technique is used along with an accurate calibration method for the measurement of the tooth profile. Experimental and theoretical inspection of the phase-to-coordinate relation is presented. In addition, a nonlinear system model is proposed for collimating illumination that gives a more accurate mathematical representation of the system, thus improving the shape measurement accuracy. Simulation and optical measurement results are presented to verify the feasibility and performance of the developed system.

Keywords

3D intraoral scanner 3D measurement system Virtual 3D Scanner Fringe projection Phase-to-coordinates 

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Copyright information

© Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Graduate School of Mechanical EngineeringMyongji UniversityGyeonggi-DoSouth Korea
  2. 2.Dept. of Mechanical EngineeringMyongji UniversityYongin, Gyeonggi-DoSouth Korea

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