Tooth position measurements on dental casts using holographic images |
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| Affiliation: | 1. Functional Materials Laboratory (FML), School of Materials & Mineral Resources, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, 710055, China;2. Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland;1. Deputy Head, Clinic for Removable Prosthodontics, Dental School, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium;2. Specialist, Periodontics and Implantology, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium;3. Professor, Applied Mathematics-Statistics, Department of Oral Health Sciences, and Department of Educational Sciences Localities Ontologies Commons Integrated, University of Amsterdam Brussel, Brussels, Belgium; and Lecturer, Anton de Kom University of Suriname, Paramaribo, Suriname; and Research consultant, Dental School, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium;4. Specialist, Periodontics and Implantology, Professor and Chairman, Department of Periodontology and Oral Implantology, Dental School, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium; and visiting professor, Department of Prosthodontics, Malmö University, Malmö, Sweden; Department Head, Department of Dentistry, Radboud University Nijmegen, Nijmegen, The Netherlands;1. National Institute for Materials Science (NIMS), International Center for Materials Nanoarchitectonics (WPI-MANA) and Center for Functional Sensor & Actuator (CFSN), Namiki 1-1, Tsukuba, 305-0044, Japan;2. University of Tsukuba, Graduate School of Pure and Applied Sciences, 1-1-1 Tennoudai, Tsukuba, 305-8671, Japan;3. Faculty of Science and Engineering, Kokushikan University, 4-28-1 Setagaya, Setagaya-ku, Tokyo, 154-8515, Japan;4. New Industry Creation Hatchery Center, Tohoku University, Sendai, 980–8579, Japan;1. Department of Odontology, Umeå University, Umeå, Sweden;2. Department of Clinical Microbiology, Umeå University, Umeå, Sweden;1. Professor and chair emeritus, Department of Orthodontics, University of Giessen, Giessen, Germany;2. Associate professor, Department of Orthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden;3. Assistant professor, Department of Orthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden;1. Department of Orthodontics, Faculty of Odontology, Malmö University, Malmö, SE-205 06, Sweden;2. Department of Oral Biology, Faculty of Odontology, Malmö University, Malmö, Sweden |
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| Abstract: | A new accurate method for comparing tooth positions on dental casts at different stages is described. Holograms of casts were prepared with a helium-neon gas laser. For evaluation of tooth movements, a cast and hologram representing different time points were superimposed by means of an adjustable x-y stage. Occlusal surface detail was used as a reference for the superimposition. Positional changes of the upper incisors were detected as discrepancies between the cast and the hologram image. |
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