Affiliation:
1. Nihon Visual Science, Inc., 6-26-2 Shinjuku, Shinjuku-ku, Tokyo 160-0022, Japan
Abstract
We have developed a new system for measuring dental, gnathic, and facial areas with cephalogram-equivalent images created from computed tomographic imaging data. An advantage of this collaborative system is that a measurement template and automated processing are used. First, experienced orthodontists were provided with the measurement templates; they then moved the measurement markers to the specified landmarks on the cephalogram in the template. Subsequently, the program automatically detected the coordinates of the markers and calculated the distance between those coordinates. The appropriate use of this system leads to highly accurate results in large quantities of measurements in a short time by means of both manual and automatic processing. The system was developed to contribute to worldwide research into dental and craniofacial measurements; the research involved 500 patients, and the system worked successfully.
Funder
Nihon Visual Science, Inc., Tokyo, Japa
Tetsutaro YAMAGUCHI of Kanagawa Dental University, Japan
Ministry of Education, Culture, Sports, Science, and Technology, Japan
Reference10 articles.
1. A new X-ray technique and its application to orthodontia;Broadbent;Angle Orthod.,1931
2. Adel, M., Yamaguchi, T., Tomita, D., Nakawaki, T., Kim, Y.I., Hikita, Y., Haga, S., Takahashi, M., Nadim, M.A., and Kawaguchi, A. (2017). Contribution of FGFR1 variants to craniofacial variations in East Asians. PLoS ONE, 12.
3. Growth hormone receptor gene variant and mandibular height in the normal Japanese population;Yamaguchi;Am. J. Orthod. Dentofac. Orthop.,2001
4. Accuracy and reliability of craniometric measurements on lateral cephalometry and 3D measurements on CBCT scans;Gribel;Angle Orthod.,2011
5. Comparison of the reliability of anatomic landmarks based on PA cephalometric radiographs and 3D CT scans in patients with facial asymmetry;Bajaj;Int. J. Clin. Pediatr. Dent.,2011