Buccal and lingual crown contours. The influences of the self-cleansing effect of food and mechanical cleansing

Abstract

I studied the difference of coronal bucco-lingual contours influenced self-cleansing effect by food and easiness in mecanical cleansing, using the teeth coloring matter, and got the following conclusion.About self-cleansing effect by food.1. From the bucco-lingual side point of view, the rate of removing the coloring matter was higher in functional cusp side than in non-functional cusp side.2. From the form variety point of view, in functional cusp side, according to high of contour decreasing, the rate of removing the coloring matter was higher. On the other hand, in non-functional cusp side, the evident defference was not observed. And the coloring matter remained at the cervical part in every form.3. Form the food variety point of view, the evident difference was observed; the rate of removing the coloring matter was highest in boiled pork, next raw cucumber, and was lower in kamaboko and bread.About easiness in mechanical cleasing. From the form variety point of view, according to height of contour increasing, the rate of remaining the coloring matter was higher.