Abstract: A tool for forming a hump along a substantially flat surface of a dental matrix, Said tool having first and second forming surfaces for urged together to form said hump on said matrix inserted therebetween, said forming surface having one portion part-spherical and another transverse convex arch-shaped project and a flat forming surface extending around of said project, and said second forming surface having one portion part-circular and another transverse concave arch-shaped cavity opposite said project.

Abstract: A tool for forming a hump along a substantially flat surface of a dental matrix, Said tool having first and second forming surfaces for urged together to form said hump on said matrix inserted therebetween, said forming surface having one portion part-spherical and another transverse convex arch-shaped project and a flat forming surface extending around of said project, and said second forming surface having one portion part-circular and another transverse concave arch-shaped cavity opposite said project.

Abstract: A disposable, plastic dental implement is provided for enabling both the aspiration of fluids from a patient's mouth and the retracting of soft tissues in the patient's mouth. The implement is a slender, elongate member having a hollow tubular portion having a suction end and a connection end for connecting the member to a conventional suction tube. Relatively narrow, first and second, longitudinally-extending fins project sidewardly from opposite, lower, side regions of said tubular portion. These fins, which are substantially uniform in width and thickness, extend around a suction end of the tubular member to abut one another. A region of the fins around the suction end of tubular portion are curved downwardly to form an arcuate, tissue-retraction tip at the suction end of the member. Preferably, the width of the fins is less than the outside diameter of the tubular portion at its connection end.