Patent ID: 7201512

Claim:
A kneader for a tooth restoration material, which circularly moves a capsule housing body housing and keeping a capsule for a tooth restoration material with its longitudinal direction being kept in a fixed direction, in order to mix and knead a powder component and a liquid component of the tooth restoration material in a mixing compartment of the capsule for the tooth restoration material, comprising, a rotating plate rotated in a rotating direction around a driving axis by a driving means a bearing for a capsule housing body mounted near a circumference part of said rotating plate, an axis supported with said bearing for a capsule housing body being rotatable only in a reverse direction to the rotating direction of said rotating plate, a capsule housing body fixed with a capsule housing body supporting axis, which is parallel to the driving axis of said driving means and supported with said bearing for the capsule housing body, a balance weight fixed at a predetermined position of said rotating plate approximately opposite to said capsule housing body beyond the driving axis of said driving means, and a mechanism for circularly moving a direction keeping axis for keeping the direction of a capsule housing body in a same direction as the rotating direction of said rotating plate, along a circle having a same diameter as but the different center from those of the circular movement of the capsule housing body supporting axis, the direction keeping axis being parallel to the driving axis of said driving means, and substantially fixed with the capsule housing body.