Chesebrough-pond's USA Co., Division of Conopco, Inc.

Chesebrough-pond's USA Co.

Peter Leonard Dawson

Donald R Lamond

Bert D Heinzelman

John Moldauer

Stephen John Raven

Toothbrush

A toothbrush is provided having a handle and a bristle bearing head. The head includes a central skeleton, resilient side members mounted on either side of the central skeleton, tuft mounting receptacles in both the skeleton and the side members, and bristle forming tufts received in both the tuft mounting receptacles of the skeleton and of the side members. The side member bristle tufts are movable both sideways and downwards in a toggling movement relative to the bristle tufts stationarily mounted on the skeleton.

Toothbrush with flexibly mounted bristles

The invention relates to liquid dentifrices which contain particulate siliceous abrasive cleaning agents, stably suspended in a liquid medium with the aid of a polysaccharide gum as suspending agent. By using a particulate siliceous abrasive cleaning agent with a specific surface area of between 50 and 900 m.sup.2 /g, and using a liquid medium which is free from polyol-type humectants, liquid dentifrices are obtained with satisfactory rheological properties. Preferably the compositions have a compositional viscosity index of between 3 and 30, said index being defined as ##EQU1## wherein S=concentration in % of thickening silica, if present, in the liquid medium and P=concentration in % of polysaccharide gum in the liquid medium.

Liquid dentifrices

The present invention relates to liquid dentifrices which contain particulate abrasive material, stably suspended in an aqueous vehicle with the aid of a polysaccharide gum as suspending agent. It has been found that high levels of the particulate abrasive material can be stably suspended with less polysaccharide gum than in the prior art, if a small amount of an alkalimetal bicarbonate is included in the dentifrices. This also significantly reduces the loss of available F.sup.- in the dentifrice if a fluorine-containing anticaries agent such as sodium monofluorophosphate is included.

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Upton by Chester, United Kingdom

Peter Leonard Dawson