| 摘要 |
A stirring mixer for a dental impression material to decrease bubbles to be generated in a mixed dental impression material and the material to be left in a tubular main body, the mixer has a tubular main body wherein a discharging portion is provided following the mixing portion via a throttling portion from an injecting portion to which two pastes are injected, and a stirring rod with protruding stirring blades is rotated by a motor, leading ends of 1<st >blades are positioned in a largest diameter portion of the throttling portion, leading ends of 2<nd>, 3<rd >and 4<th >blades are positioned in an inner diameter portion of the mixing portion, 1<st >blade in a rotational direction and interval between 3<rd >and 4<th >blades is wider than that between the other adjacent blades, and opposing faces of 3<rd >and 4<th >blade to each other bulge towards the other blades.
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