Femtosecond Pulse Laser-oriented Recording on Dental Prostheses: A Trial Introduction

  • ICHIKAWA Tetsuo
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima
  • HAYASAKI Yoshio
    Department of Optical Science and Technology, Institute of Technology and Science, University of Tokushima
  • FUJITA Keiji
    Department of Optical Science and Technology, Institute of Technology and Science, University of Tokushima
  • NAGAO Kan
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima
  • MURATA Masayo
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima
  • KAWANO Takanori
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima
  • CHEN JianRong
    Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima

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説明

The purpose of this study was to evaluate the feasibility of using a femtosecond pulse laser processing technique to store information on a dental prosthesis. Commercially pure titanium plates were processed by a femtosecond pulse laser system. The processed surface structure was observed with a reflective illumination microscope, scanning electron microscope, and atomic force microscope. Processed area was an almost conical pit with a clear boundary. When laser pulse energy was 2μJ, the diameter and depth were approximately 10μm and 0.2μm respectively — whereby both increased with laser pulse energy. Further, depth of pit increased with laser pulse number without any thermal effect. This study showed that the femtosecond pulse processing system was capable of recording personal identification and optional additional information on a dental prosthesis.

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