Patent ID: 8893925

Claim:
A dental container for mixing and dispensing dental material, said container comprising a hollow body having a proximal end, a distal end and a main chamber for containing dental powder material therein; a dispensing nozzle attached to said body at said distal end; a frangible membrane located adjacent said dispensing nozzle and said distal end for forming a seal for retaining said powder in said main chamber; a liquid receptacle located within said body between said main chamber and said proximal end of said body, said liquid receptacle having a side wall and an inner end wall for sealing said liquid receptacle, said inner end wall having, a central weakened portion; a plunger at said proximal end of said body in engagement with said liquid receptacle and movable axially inwardly of said body for creating hydraulic pressure on said liquid receptacle and causing said central weakened portion to break so that liquid within said liquid receptacle enters said main chamber and mixes with powder contained therein for forming a paste; continued axial movement of said plunger creates pressure on said inner wall causing it to break away from said side wall; said plunger and said inner end wall being further movable toward said distal end for creating hydraulic pressure by means of said paste fox causing said frangible membrane to burst and allowing said paste to flow outwardly through said dispensing nozzle.