title: Femtosecond pulse laser-oriented recording on dental prostheses: a trial introduction.
abstract: 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 2 microJ, the diameter and depth were approximately 10microm and 0.2 microm 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.
authors.affiliation: Department of Oral & Maxillofacial Prosthodontics and Oral Implantology, Institute of Health Biosciences, University of Tokushima, 3-18-15 Kuramoto, Tokushima 770-8504, Japan. ichi@dent.tokushima-u.ac.jp
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ichikawa
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Hayasaki
authors.forename: Keiji
authors.initials: K
authors.lastname: Fujita
authors.forename: Kan
authors.initials: K
authors.lastname: Nagao
authors.forename: Masayo
authors.initials: M
authors.lastname: Murata
authors.forename: Takanori
authors.initials: T
authors.lastname: Kawano
authors.forename: JianRong
authors.initials: J
authors.lastname: Chen
mesh_terms: D003821:Denture Identification Marking / Q000379:methods*; D005240:Feasibility Studies; D007834:Lasers; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D014025:Titanium
chemical_list: D014025:Titanium