Oral 3D Scanner Camera for Dental Treatment


  • Doo Hee Han


Background/Objectives: The concept of digital workflow in the production of prosthetics, including CAD-CAM (Computer-aided Design / Computer-aided Manufacture) technology, which designs and processes prostheses and images, using 3D scanners in the dental field. More than 20 years have passed since its introduction. But most of this has been done only in the laboratory. The conventional method of taking an impression in the oral cavity and then scanning a three-dimensionally plastered plaster model in a laboratory room has become widespread. However, it is not long ago that the concept of digital flow is actively applied to the doctor's office by directly taking images of patients through digital oral scan.
Methods/Statistical analysis: Lattice pattern projection device is applied to high speed camera with high frame rate using small optical lens and image sensor and using one-dimensional laser scanner.
Findings: The grid pattern projection apparatus was constructed by using the one-dimensional laser scanner and the line laser, and the three-dimensional measurement was performed by irradiating the grid pattern image on the inspection object. Accordingly, compared with the prior art, it is simpler to manufacture and smaller in size than the conventional two-dimensional laser scanner and the dot pattern laser lattice pattern projection apparatus, and it is possible to manufacture the light source such as LED, halogen, etc. which is a problem of the conventional lattice pattern projection apparatus. It is possible to solve the problems of improvement of the light efficiency, focusing of the projection object and focusing, and the like, which occur when the light is collected. In addition, in the conventional grid pattern projection apparatus, it is difficult to measure 3D using a real-time grid pattern in a high speed camera due to a decrease in the frame rate when the grid pattern is projected, but this problem can be easily solved when the grid pattern projection apparatus is applied.
Improvements/Applications: Three-dimensional oral scanners provide a means for manufacturing dentures as well as implants without using rubber molds. Therefore, it can be widely used in dental treatment.