Abstract: A disposable dental tray for medications such as fluoride gel, includes a unitary member formed of a flexible foam material defining a pair of hinged U-shaped tray portions configured to fit over the upper and lower teeth of the mouth and wherein each tray portion is defined by a base wall, a pair of end walls and inner and outer side walls. Both of the tray portions are provided with respective tray portion positioning tabs extending from their respective outer side walls. The positioning tabs include respective tab sections which are pre-formed so as to be situated such that when the tray portions are folded, the respective tab sections will automatically abut and be squeezable against each other without the consequent application of any forces to the outer side walls of the tray portion thereby preventing any possibility of distorting the tray portions during use.

Abstract: An amalgam carrier and dispenser constructed in a manner such that its effective life is at least about five times greater than that of conventional instruments. The amalgam carrier and dispenser includes a handle, a plunger element affixed to the handle having a plunger portion, and an open ended sleeve element having an internal bore formed therein in which the plunger portion is slideably located. According to the invention, the plunger portion has a terminal end region, preferably in the form of a tip portion, which is formed of a hard metallic material while the clearance between the plunger portion and the internal sleeve element bore is smaller relative to clearances provided in conventional instruments. By these provisions, the effects of abrasion of the surfaces of the plunger and associated components which would otherwise be caused by the action of the amalgam on these components is significantly reduced relative to conventional instruments.