小窩裂溝部におけるエナメル質初期齲蝕に関する研究-画像解析による脱灰部のミネラルの定量的観察と初発部位について-
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Thirty-four molar teeth with decalcification of 37 pits and fissures were utilized to evaluate and clarify the initial changes in the enamel surrounding these sites. Image analyses of photomicrograms, microradiograms, and iso-concentration curves were utilized to evaluate the shape and width of the sites, as well as the frequency of initial decalcification at various locations for each of four pit and fissure shapes.<BR>The results were as follows.<BR>1) Initial decalcification occurred 81.1% of the time in pit regions compared to 18.9% of the time in fissure regions.<BR>2) The frequency of initial decalcification by location was 51.4% in the wall region, 35.1% in the entrance region, and 13.5% in the bottom region.<BR>3) The frequency of initial decalcification by shape of the pits and fissures was 64.9% in type I-2, 13.5% in type I-1, 10.8% in type T, and 10.8% in type I-3.<BR>4) The frequency of initial decalcification by location and shape of pits and fissures was higher on the wall region of type I-2, followed by the entrance region of types I-1, T, and I-2. The frequency was lower in the bottom region of types I-3 and I-2, and the wall region of type I-3.<BR>5) No initial decalcification was noted in the wall region or the bottom region of types T and I-1, or in the entrance region of type I-3.<BR>6) The mean width of the pits and fissures at the site of initial decalcification was approximately 150μm, with most sites wider than 100μm.
- 有限責任中間法人 日本口腔衛生学会の論文
有限責任中間法人 日本口腔衛生学会 | 論文
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