Artificial tooth root explant as well as manufacturing method and blank ejecting mould of same

Abstract

The invention provides an artificial tooth root explant as well as a manufacturing method and a blank ejecting mould of the artificial tooth root explant. The artificial tooth root explant is manufactured by ejecting zirconia slurry from an ejecting mould, moulding a blank and sintering the blank, wherein the ejecting mould at least forms an internal thread section and a polygonal internal conical section inside the blank and at least forms a first external thread section, a first thread removing surface, a second external thread section and a second thread removing surface outside the blank; the ejecting mould is provided with a spiral advancing and retreating mechanism, an internal thread moulding rod, an axial sliding component, an elastic element, a first sliding module and a second sliding module; and a parting line of the first sliding module and the second sliding module rightly passes through and forms the first thread removing surface and the second thread removing surface of the blank. In the ejecting process, the spiral advancing and retreating mechanism is used for driving the internal thread moulding rod to advance spirally and ejecting the axial sliding component to an ejection positioning point in the advancing process so as to form the polygonal internal conical section of the blank; and after the ejecting process, the spiral advancing and retreating mechanism retreats the internal thread moulding rod spirally, and the elastic element retreats the axial sliding component along with the internal thread moulding rod till the internal thread moulding rod and the axial sliding component break away from the blank completely.

Description

technical field [0001] The invention relates to an artificial tooth root implant, its manufacturing method and its green body injection mold, especially to inject a green body with a thread removal surface in an external thread with zirconia powder slurry in a mold, and go through the steps of degreasing and sintering Manufactured into an artificial tooth root implant, and an internal thread forming rod is provided in the mold to drive an axial sliding part into the injection positioning in a spiral forward manner, and retreat in a spiral backward manner to demould after injection. Background technique [0002] Before implanting a tooth, a hole must be drilled into the alveolar bone to lock the artificial tooth root implant. Such as figure 1 As shown, the artificial tooth root implant 1 is usually provided with an external thread section 11, an internal thread section 12, and a polygonal inner cone section 13; the external thread section 11 is locked into the bone hole of t...

AI Technical Summary

Problems solved by technology

The injection mold is equipped with a screw advance and retreat mechanism, an internal thread forming rod, an axial slide, an elastic element, a first slide module and a second slide module, wherein the parting line between the first slide module and the second slide module Just passing through and forming the first thread-removing surface and the second thread-removing surface of the blank; during injection, the screw advance and retreat mechanism is used to drive the internal thread forming rod to advance in a spiral, and push the axial slider to an injection stage when advancing. The positioning point to form the polygonal inner cone section of the green body; when the injection is completed, the screw advance and retreat mechanism makes the internal thread forming rod spirally retreat, and at this time the elastic element makes the axial slider retreat accordingly until the internal thread forming rod and The two axial sliding parts are completely separated from the green body, so as to solve the old problem that the external thread section will be damaged by the sliding module when the mold is opened, and break through the practical problem that the US invention patent US 6,280,193 B1 cannot break through, so that the artificial tooth root The sintered green body of the implant can be mass-produced at high speed, and the cost and terminal price can be reduced to benefit the world.

Images