A capsule for mixing and applying dental cement includes a capsule body having a cylindrical shape, a longitudinal axis and a dispensing end. A mixing chamber is located in the capsule body, and it is designed and arranged to hold dental cement. The mixing chamber has an opening region. A piston is located in the capsule body and in the mixing chamber to be axially displaceable for expelling mixed dental cement through the opening region. An exit opening is located at the dispensing end of the capsule body and in the opening region. A closure cap is designed and arranged to cover the opening region. A clamping device is designed and arranged to rotatably connect the closure cap to the capsule body in the opening region to be in opposite fluid-sealing relationship. An unbent application cannula is fixedly mounted to the closure cap at an angle of approximately 10.degree. to 80.degree. with respect to the longitudinal axis of the capsule body.