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牙科铸造的特殊性牙科铸造的初期,是用金箔压贴于牙窝洞后取出,在形成的此种壳型内侧面,熔流以焊金作成嵌体,用粘固粉粘固。其后为了防止熔流焊金过程的变形,箔壳的外侧面用石膏等增强。进一步发展是将软化了的蜡作成蜡型,用石膏加砂作为包埋料用以包埋,待包埋料硬化后加热失蜡烧成了铸型,用熔化了的金属铸入之。初期铸件精度较低,使用的是富于延性软质金合金(HV90以下),
Dental casting the particularity of dental casting in the early stage, is pressed with gold foil attached to the tooth cavity hole removed in the formation of such shell-shaped inner side, the melt flow to welding gold as inlay, with cement powder bonding. Thereafter, in order to prevent the deformation of the melt flow welding process, the outer side of the foil shell is reinforced with gypsum or the like. Further development is to soften the wax made of wax, gypsum and sand as a buried material used to embed, to be embedding material hardening after heating lost wax burning mold, with molten metal cast into it. Initial low precision castings, the use of rich ductile soft gold alloy (HV90 below),