| 摘要 |
-13- An alkaline oral hygiene composition which when brushed or otherwise applied to surfaces of the teeth and adjacent gingival tissue functions not only to clean and whiten the teeth but also to prevent the formation of plaque, to neutralize acids causing tooth decay and to remove from the surfaces extraneous material which discolor the teeth. Included in the composition is at least one alkaline metal compound powder having minimal abrasivity which imparts to the composition an overall pH in excess of 9 whereby when used in the acidic environment of the oral cavity, retains its alkalinity to counteract the activity of pathogenic bacteria causing plaque and to neutralize the production in the oral cavity of acids causing tooth decay. The alkaline composition also saponifies foreign material attached to the teeth surfaces so that these materials which discolor the teeth can be washed away.
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