Effect of cement space on stress distribution in Y-TZP based crowns

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• 作者：Carlos Eduardo Edwards Rezende^a ; ^c ; ^{caerezende@gmail.com} ; ^{caerezende@usp.br} ; Ana Flá ; via Sanches Borges^b ; ^{afborges@fob.usp.br} ; Carla Castiglia Gonzaga^c ; ^{carlacgonzaga2@gmail.com} ; Yuanyuan Duan^d ; ^{yduan@umc.edu} ; Jos&eacute ; Henrique Rubo^a ; ^{jrubo@fob.usp.br} ; Jason Alan Griggs^d ; ^{jgriggs@umc.edu}
• 关键词：Ceramic restorative materials ; Zirconia ; Cement thickness ; Finite element analysis ; Ceramic crowns ; Fit ; CAD&ndash ; CAM ; Micro-CT
• 刊名：Dental Materials
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：33
• 期：2
• 页码：144-151
• 全文大小：1924 K
• 卷排序：33

文摘

There is a considerable variation of the internal occlusal fit of Y-TZP copings made by CAD/CAM technology. A thicker cement layer can lead to greater risk of porcelain fractures in Y-TZP based ceramic crowns. Manufacturing procedures might exert some influence on the internal fit and, as consequence, on the stress distribution in Y-TZP base ceramic crowns.