PROBLEM TO BE SOLVED: To provide a method and material that do not require a container nor a measurement to mix the material, mixture of the material being easily obtained only by kneading a bag, with no adverse effect on the human body due to no dispersion of dental powder, with less possibility of contamination of air bubbles during the mixture, with little waste of mixture material, facilitating the disposal of excess mixture material.SOLUTION: A bag has two or more layers of external and internal bags, and the inner layer made of a resin film that can be welded by a fusion at a temperature lower than that of the external layer. The bag is provided with a powder containing part and a liquid containing part that are separated by sectioned parts formed by heat welding the inner layers to each other. A dental powder whose amount is for one time usage is contained and sealed in the powder containing part, and a liquid whose amount corresponds to the liquid mixture ratio necessary to mix the dental powder is contained and sealed in the liquid containing part. The sectioned parts are connected together so that they can be broken by an external pressure, resulting in the flowing in of the dental powder and the liquid. By kneading the resin bag from its outside with hands, the dental powder and the liquid that become confluent due to the connection are designed to be mixed in the resin bag.COPYRIGHT: (C)2015,JPO&INPIT【課題】 混練に容器も計量も不要であり、袋を揉むだけで手軽に混練でき、歯科用粉末が飛散せず人体への悪影響がなく、混練時に気泡が混入しにくく、混練材の無駄が少なく、余剰混練材の廃棄を容易にする。【解決手段】 袋が外層と内層を備えた二層以上であり且つ内層が外層よりも低温で融着可能な樹脂フィルム製であり、前記内層同士が熱溶着された区画部で仕切られた粉末収容部と液体収容部を備え、一回の使用量の歯科用粉末が前記粉末収容部に、その歯科用粉末の混練に必要な混水比の液体が液体収容部に収容密封され、前記区画部は外部から加圧することにより破損して前記歯科用粉末と液体が流入するように連通し、樹脂製袋をその外から手で揉むと前記連通により合流した歯科用粉末と液体が当該樹脂製袋内で混練されるようにした。【選択図】図1
