歯の分光放射測定法による色彩学的研究　　上下顎前歯部について

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  • Chromatic study on tooth using spectroradiometry. In the anterior areas of the upper and lower jaws.
  • In the Anterior Areas of the Upper and Lower Jaws
  • 上下顎前歯部について

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In recent years, requests by patients concerning clinical prosthesis have become increasingly diversified and sophisticated. And not only the form and arrangement of the teeth but also their color is considered particularly important.<BR>For that reason a spectroradiometer device was used, and three main elements of the central incisor, the lateral incisor and canine in the upper and lower jaws and the chromatic differences were compared and examined.<BR>Conclusion<BR>1. Distribution of colors in the L*a*b* Tables was quite similar in the upper and lower jaws when the measured area was the same even in the case where different types of teeth were compared.<BR>2. The difference according to the areas measured was either ‘slight’ or ‘noticeable’ in both the upper and lower jaws in 60-70% of all the subjects measured.<BR>3. As for the difference in color, many teeth in the upper jaw were observed as being different in color from one another, but no marked difference was noticed among the teeth of the lower jaw.<BR>4. In more than 80% of the subjects measured, color differences were noticed between the teeth in the upper and the lower jaws and almost all of such differences belonged to ‘noticeable’, that is, more than1.2but less than 3.3.

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