Modified occlusal contour correction for the prevention of pit and fissure caries.

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Since the occlusal contour correction proposed in a previous paper did not significantly reduce dental plaque on the occlusal surface, this study was performed to find the effect on the occlusal plaque and dental caries by a modified method using smaller abrasive and polishing points.<BR>One hundred and forty pairs of sound first molars of both sides in the same jaws were selected from 2nd grade school-children in 4 elememtary schools of Koromogawa Village, Iwate Prefecture, in Japan. The occlusal surface of one side of the experimental group was operated on as shown in Fig. 2 with the smaller instruments shown in Fig. 1, and the other side of the control group was not operated on.<BR>The differences in occlusal plaque index values after 12 to 48 months between the experimental and control groups were large and statistically significant, and the caries reduction rated of the experimental group were raised 65.1% to 76.0% over the control group in each experimental period, and the differences were also highly significant.<BR>Therefore, the modified occlusal contour correction with smaller instruments than the previous method produced lower caries incidence with less occlusal dental plaque.
有限責任中間法人日本口腔衛生学会の論文