Abstract: The present invention relates to a composition for enhancing oral hygiene which can effectively prevent and treat periodontal diseases and dental caries, characterized in that it contains as an effective component one or more component selected from ursodesoxycholic acid and chenodesoxycholic acid having a good inhibiting effect on collagenase, which is known as the inducer of gingivitis.

Abstract: An irrigator for applying an irrigating solution to internal body cavities. A housing defines a first chamber for holding a supply of irrigating solution liquid for irrigating a body cavity and a second chamber for receiving waste liquid from the body cavity. A first single action pump in the housing receives a measured quantity of liquid from the first chamber and pumps the same into the body cavity. A second single action pump in the housing withdraws waste liquid from the body cavity and discharges the liquid into the second chamber. The first and second pumps are of the piston and diaphragm type, and each is provided with a port in communication with a single common conduit connectable with the body cavity.