Abstract: A dental hygiene apparatus for removing plaque which is to connect with the handle of a conventional toothbrush with the toothbrush being used as the instrument to remove plaque. The handle is mounted through the open end of a cylindrical sleeve-like handle that is of a size to be readily graspable by a human being. A spring arrangement is located within the interior chamber and is to connect with the handle of the toothbrush to impart a biasing force against the handle of the toothbrush against the handle deflecting. The handle of the toothbrush is secured by a threaded bolt which is threadably engaged to the wall of the sleeve. The apparatus is to be manually used causing the bristles of the toothbrush to be moved in a direction toward the teeth of the user.

Abstract: A method of obtaining hydrocolloid impression material to be used in conjunction with making dental impressions where a quantity of the hydrocolloid impression material in solid form is cut into a mass of small parts. This mass of small parts is then heated within a microwave oven until the mass is liquefied and achieves a homogeneous consistency. The liquid mass is then poured into a tray and tempered and then utilized to make a desired dental impression.

Abstract: A self-contained apparatus which includes a liquid reservoir and a liquid supply conduit and a liquid return conduit to the reservoir. The liquid is to be supplied to an exterior structure for changing the temperature of the exterior structure. The reservoir is to be removable from the apparatus to facilitate filling of the reservoir.