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CAD/CAM技术与传统方法制作的钴铬金属烤瓷冠在三个生产阶段的边缘适合性比较

Comparison of the Marginal Fit of Cobalt-Chromium Metal-Ceramic Crowns Fabricated by CAD/CAM Techniques and Conventional Methods at Three Production Stages.

作者信息

Real-Voltas Francisco, Romano-Cardozo Elisabeth, Figueras-Alvarez Oscar, Brufau-de Barbera Magi, Cabratosa-Termes Josep

出版信息

Int J Prosthodont. 2017 May/June;30(3):304–305. doi: 10.11607/ijp.5038. Epub 2017 Mar 20.

DOI:10.11607/ijp.5038
PMID:28319213
Abstract

PURPOSE

The aim of this study was to compare the marginal fit of cobalt-chromium crowns fabricated using conventional casts and computer-aided design/computer-assisted manufacturing (CAD/CAM) techniques at three stages of production: metal coping, after porcelain firing, and after cementation.

MATERIALS AND METHODS

A total of 80 metal-ceramic crowns were fabricated using four different techniques: lost wax casting, milling, laser sintering, and milling of a presintered metal block. Marginal fit was measured at each manufacturing stage.

RESULTS

The porcelain firing stage improved marginal fit. CAD/CAM techniques resulted in better marginal fit than did conventional casting techniques at all manufacturing stages.

CONCLUSION

CAD/CAM techniques improve marginal fit.

摘要

目的

本研究的目的是比较在生产的三个阶段（金属基底冠阶段、烤瓷烧结后阶段和粘结后阶段）使用传统铸造法和计算机辅助设计/计算机辅助制造（CAD/CAM）技术制作的钴铬合金冠的边缘适合性。

材料与方法

使用四种不同技术制作了总共80个金属烤瓷冠：失蜡铸造法、铣削法、激光烧结法和预烧结金属块铣削法。在每个制造阶段测量边缘适合性。

结果

烤瓷烧结阶段改善了边缘适合性。在所有制造阶段，CAD/CAM技术比传统铸造技术产生了更好的边缘适合性。

结论

CAD/CAM技术改善了边缘适合性。

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