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公开(公告)号：US5106303A
公开(公告)日：1992-04-21
申请号：US497620
申请日：1990-03-23
CPC分类号： A61C13/0003 , A61C5/00 , A61C5/002 , A61C5/10
摘要： The present invention relates to artificial onlay tooth crowns or inlays composed of a prefabricated core designed for preparations for onlay tooth crowns or inlays in natural teeth. The core is preferably fabricated from a high strength densely sintered ceramic material by copy milling from a negative reproduction from the prepared cavity to a compacted body or a presintered ceramic material. During the copy milling, the sintering shrinkage is considered by enlargement of the copy milled compacted body or the presintered body corresponding to the sintering shrinkage. The onlay tooth crown and inlays are given the final shape by shaping the surfaces outside the cavity of the compacted or the presintered body. After the final sintering, the external surface can be shaped and a veneer material attached to the external surface of the core by, e.g., firing of dental porcelain. The manufacture of onlay tooth crowns or an inlay according to the method of the invention decreases essentially the manufacturing time for onlay tooth crowns and inlays and at the same time the strength and the accuracy to shape increase.
摘要翻译： 本发明涉及由设计用于天然牙齿上的牙冠或嵌体的制备的预制芯构成的人造花岗牙冠或镶嵌。 芯优选由高强度致密烧结的陶瓷材料制成，通过从制备的空腔的负重繁体抄制成压实体或预烧结的陶瓷材料。 在复制研磨期间，通过对应于烧结收缩率的复制碾压压实体或预烧结体的放大来考虑烧结收缩率。 通过将压实或预烧结体的腔体外部的表面成形，赋予镶嵌齿冠和镶嵌最终形状。 在最终烧结之后，外表面可以在薄板材料通过例如玻璃纤维连接到芯的外表面之前成型。 烧牙牙瓷。 根据本发明的方法制造镶嵌齿冠或镶嵌物基本上减少了镶嵌齿冠和嵌体的制造时间，同时强度和形状精度增加。
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公开(公告)号：US5080589A
公开(公告)日：1992-01-14
申请号：US453977
申请日：1989-12-20
申请人： Agneta E. Oden , Hans T. Rostvall
发明人： Agneta E. Oden , Hans T. Rostvall
CPC分类号： A61C13/0003 , A61C5/002 , A61C5/10 , A61K6/0008 , A61K6/0017 , A61K6/0073 , A61K6/0094 , A61K6/0215 , A61K6/0235 , A61K6/024 , A61K6/025 , A61K6/027 , A61K6/0276
摘要： The present invention relates to an artificial tooth crown composed of a prefabricated coping designed for artificial strength densely sintered ceramic material with powder metallurgical methods. The tooth crown is given the final shape by a veneer material attached to the external surface of the coping by e.g., firing or dental porcelain. The tooth crown can be made in less manufacturing time with an increase in the strength and the accuracy to shape.
摘要翻译： 本发明涉及一种人造牙冠，其由设计用于人造或天然邻接的预制构架构成。 应力优选由具有粉末冶金方法的高强度致密烧结陶瓷材料制成。 通过例如通过附接到紧固件的外表面的单板材料将齿冠赋予最终形状。 烧牙牙瓷。 根据本发明的方法制造牙冠基本上减小了齿冠的制造时间，同时强度和形状精度增加。
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公开(公告)号：US5217375A
公开(公告)日：1993-06-08
申请号：US753102
申请日：1991-08-30
CPC分类号： A61C13/0003 , A61C5/00 , A61C5/002 , A61C5/10
摘要： The present invention relates to artificial onlay tooth crowns or inlays composed of a prefabricated core designed for preparations for onlay tooth crowns or inlays in natural teeth. The core is preferably fabricated from a high strength densely sintered ceramic material by copy milling from a negative reproduction from the prepared cavity to a compacted body or a presintered ceramic material. During the copy milling, the sintering shrinkage is considered by enlargement of the copy milled compacted body or the presintered body corresponding to the sintering shrinkage. The onlay tooth crowns and inlays are given the final shape by shaping the surfaces outside the cavity of the compacted or the presintered body. After the final sintering, the external surface can be shaped and a veneer material attached to the external surface of the core by, e.g., firing of dental porcelain. The manufacture of onlay tooth crowns or an inlay according to the method of the invention decreases essentially the manufacturing time for onlay tooth crowns and inlays and at the same time the strength and the accuracy to shape increase.
摘要翻译： 本发明涉及由设计用于天然牙齿上的牙冠或嵌体的制备的预制芯组成的人造花岗牙冠或镶嵌。 芯优选由高强度致密烧结的陶瓷材料制成，通过从制备的空腔的负重繁体抄制成压实体或预烧结的陶瓷材料。 在复制研磨期间，通过对应于烧结收缩率的复制碾压压实体或预烧结体的放大来考虑烧结收缩。 通过将压实或预烧结体的腔体外部的表面成形，赋予镶嵌齿冠和镶嵌最终形状。 在最终烧结之后，外表面可以被成形，并且通过例如烧制牙瓷来将附着到芯的外表面的单板材料成形。 根据本发明的方法制造镶嵌齿冠或镶嵌物基本上减少了镶嵌齿冠和嵌体的制造时间，同时强度和形状精度增加。
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