@article{oai:mdu.repo.nii.ac.jp:00001117,
 author = {近藤, 武 and 笠原, 香 and 樋口, 寿英 and 中根, 卓 and 安藤, 三男},
 issue = {1},
 journal = {松本歯学},
 month = {Apr},
 note = {application/pdf, The conventional classification of tooth mottling is based on clinical assessment of the ratio of the mottled area to the total surface area on the labial portion of the anterior teeth. This method has been criticized, however, for its lack of objectivity. Accordingly, the authors examined the possibility of adapting a computer-based technology used to determine the surface area and circumference of a tract of land from a map. It was found that with this method, the areas of the labial tooth surface and its mottled portion could be measured from photographs accurately, and with no measurement variance on repeated assays.},
 pages = {31--37},
 title = {飲料水中フッ素の許容濃度に関する研究 : 第2編 斑状歯の写真診断について},
 volume = {16},
 year = {1990}
}