Study on CAM System for Dental Model.

DOI PubMed 5 Citations 10 References
  • Motohashi Nobuyoshi
    2nd Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
  • Nunota Atsushi
    2nd Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
  • Kuroda Takayuki
    2nd Department of Orthodontics, Faculty of Dentistry, Tokyo Medical and Dental University

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  • 口腔石膏模型のＣＡＭシステムに関する研究

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Abstract

The purpose of this study was to introduce our newly-developed CAM system for dental model and to examine the shape reproducibility and measurement reliability of the CAM modelling.<BR>The system is composed of a measuring unit, which obtains three-dimensional shape information from the dental model using laser scanning, and an engineering workstation, which creates a three-dimensional graph of the dental model. Output module program which can directly process and output the three-dimensional shape data to the wide use modeling systems was developed as the software of this CAM system.<BR>Four different CAM models, that, WAX model, STL model, FDM model, and SL model, were made based on the graph of the dental model taken from a mandibular prognathic patient. The measurement reliability of each CAM model were evaluated using a contact three-dimensional measurement unit.<BR>All CAM models except a WAX model demonstrated good shape reproducibility without a blind area, suggesting no problem of the three-dimensional shape data and the output module program. Measurement reliability of each CAM model was 0.12 ±0.08 mm in graph, 0.25 ±0.05 mm in WAX, 0.28± 0.16 mm in SL, 0.31± 0.15 mm in FDM, and 0.39 ±0.18 mm in STL.<BR>These results suggested clinical feasibility of this system in accordance with electronic storage of medical information.

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