Capsules for tooth-restoring materials

Claim 1

A capsule for a tooth restoring material, comprising: a cylinder containing therein a predetermined amount of a powder component of the tooth restoring material; plunger slidably fitted in one end opening of said cylinder; a breakable package having a face formed of a weak material covering another end opening of said cylinder and containing therein an amount of a liquid component of the tooth restoring material, whereby said face formed of a weak material may be ruptured to mix said liquid and powder components; a member having a nozzle and being positioned relative to said cylinder such that said package is held between said member and said cylinder; and a package breaking member mounted on said plunger for movement therewith and having a length in the direction of movement of said plunger which is greater than a thickness of said package in said direction of movement, wherein said nozzle, said another end opening and said package breaking member are aligned and sized such that said package breaking member may break said package, pass through said another end opening and enter said nozzle during advancement of said plunger towards said another end opening for dispensing the mixed liquid and powder components, said package breaking member being smaller in width than said nozzle by an amount such that said package breaking member does not close said another end opening and said nozzle during the advancement of said plunger toward said another end opening.