公开(公告)号：US5168918A

公开(公告)日：1992-12-08

申请号：US697619

申请日：1991-05-09

Applicant: Reiichi Okuda ,  Norio Kojima ,  Kenichi Iiyama ,  Yoshinobu Yamamura ,  Yasutaro Ito ,  Shohei Hayashi

Inventor： Reiichi Okuda ,  Norio Kojima ,  Kenichi Iiyama ,  Yoshinobu Yamamura ,  Yasutaro Ito ,  Shohei Hayashi

IPC: A61C13/20 ,  B22D18/04 ,  B22D18/06 ,  B22D21/00 ,  B22D21/02 ,  B22D23/00

CPC classification number: B22D21/005 ,  B22D18/04 ,  B22D18/06 ,  A61C13/20

Abstract: A method for casting dental metals with a casting apparatus including a hermetically sealed casting chamber in which an arc electrode is located above, a crucible made of an electrically conductive material is positioned below the arc electrode, and a mold provided with a closed vent is disposed below the crucible, the method including by positioning a dental metal ingot on the crucible, evacuating the casting chamber to vacuum, feeding a small amount of an inert gas at such a pressure as to induce arc discharge all over the upper surface of the ingot, thereby melting the ingot placed on the crucible by arc discharge from the arc electrode, pouring the thus obtained molten metal into a mold through its inlet, and immediately feeding an additional amount of the inert gas into the casting chamber to increase its internal pressure to a level suitable for casting. Also the additional amount of the inert gas is rapidly fed into the casting chamber through a gas tank in the vicinity of the casting chamber.

Abstract translation: 一种用铸造设备铸造牙科金属的方法，该浇铸装置包括一个气密电铸室，其中弧形电极位于上方，由导电材料制成的坩埚位于弧形电极的下面，并且设置有一个封闭的通气口的模具 该方法包括通过将坩埚上的牙金属锭定位在坩埚上，将铸造室抽真空，在铸锭上表面引起电弧放电的压力下供给少量的惰性气体， 从而通过从电弧电极的电弧放电熔化置于坩埚上的铸块，将由此获得的熔融金属通过其入口注入模具中，并立即将额外的惰性气体进料到铸造室中以将其内部压力增加到 水平适合铸造。 此外，惰性气体的附加量通过在铸造室附近的气罐快速进料到铸造室中。

公开(公告)号：US5168917A

公开(公告)日：1992-12-08

申请号：US697578

申请日：1991-05-09

Applicant: Reiichi Okuda ,  Norio Kojima ,  Kenichi Iiyama ,  Yoshinobu Yamamura ,  Yasutaro Ito ,  Shohei Hayashi

Inventor： Reiichi Okuda ,  Norio Kojima ,  Kenichi Iiyama ,  Yoshinobu Yamamura ,  Yasutaro Ito ,  Shohei Hayashi

IPC: A61C13/20 ,  B22D18/04 ,  B22D18/06 ,  B22D21/00 ,  B22D21/02 ,  B22D23/00

CPC classification number: B22D18/04 ,  B22D18/06 ,  B22D21/005 ,  A61C13/20

Abstract: A method for casting dental metals with a casting apparatus including a melting chamber in which there are located an arc electrode above and a crucible formed of an electrically conductive material positioned below the arc electrode, and a mold chamber divided from the melting chamber by a partition wall having a through-hole at a position below the crucible and housing a mold box receiving a mold provided with an extending open vent positioned below the through-hole, the melting chamber communicating hermetically with the mold chamber through the mold, which is characterized by positioning a dental metal ingot on the crucible, vacuumizing the melting and mold chambers, feeding a small amount of an inert gas into the melting chamber at such a pressure as to induce arc discharge all over the upper surface of the ingot, thereby melting the ingot placed on the crucible by arc discharge from the arc electrode, pouring the thus obtained molten metal into the mold through its inlet, and immediately feeding an additional amount of the inert gas into the melting chamber to increase its internal pressure to a level suitable for casting.

Abstract translation: 一种用铸造设备浇铸牙科金属的方法，所述铸造设备包括熔化室，其中位于弧形电极上方的坩埚和由位于电弧电极下方的导电材料形成的坩埚，以及由熔化室分隔开的隔室 壁在坩埚下方的位置具有通孔，并且容纳模具箱，所述模具箱容纳设置有位于所述通孔下方的延伸开口的模具，所述熔化室通过所述模具与所述模具室气密连通，其特征在于 将坩埚上的牙金属锭定位在坩埚上，对熔化模具室进行抽真空，将少量惰性气体以熔化室的上表面引起电弧放电的压力供给到熔化室中，从而熔化锭 通过从电弧电极的电弧放电放置在坩埚上，通过其入口将如此获得的熔融金属倒入模具中， 将额外量的惰性气体轻轻地加入到熔化室中以将其内部压力提高到适合铸造的水平。

公开(公告)号：US4830616A

公开(公告)日：1989-05-16

申请号：US183097

申请日：1988-04-19

Applicant: Reiichi Okuda ,  Masashi Komatsu ,  Shin Asanuma ,  Noriko Hiratsuka

Inventor： Reiichi Okuda ,  Masashi Komatsu ,  Shin Asanuma ,  Noriko Hiratsuka

IPC: A61C5/00 ,  A61K6/00 ,  C09J5/02

CPC classification number: A61C5/00 ,  A61K6/0029

Abstract: A method for bonding a restorative composite resin to dentin which comprises:treating the surface of dentin with a dentin-treating liquid for, 1 to 90 seconds obtained by adding glutaraldehyde and ferric chloride to an aqueous solution of ethylenediaminetetraacetic acid regulated to a hydrogen ion concentration (pH) of 7.4; removing the treating liquid by water-rinsing to dry the thus treated surface of dentin; applying a primer comprising an ethylene related unsaturated monomer, a (meth)acrylic ester polymer and tri-n-butyl borane on the dried surface of dentin; and filling the restorative composite resin onto the applied surface of dentin.

Abstract translation: 一种将修复性复合树脂粘合到牙本质上的方法，其特征在于：用牙质处理液对牙质表面进行1〜90秒钟的处理，将戊二醛和氯化铁加入调节至氢离子浓度的乙二胺四乙酸的水溶液中 （pH）为7.4; 通过水冲洗去除处理液体以干燥如此处理的牙本质表面; 在牙本质的干燥表面上施用包含乙烯相关不饱和单体，（甲基）丙烯酸酯聚合物和三正丁基硼烷的底漆; 并将修复性复合树脂填充到牙质的施加表面上。