Joining dental ceramic layers with glass.
Joining dental ceramic layers with glass.
复制标题
将牙科陶瓷层与玻璃连接。
DOI：
10.1016/j.dental.2011.06.008
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Lawn,BR
中科院分区：
文献类型：
--
作者：
Saied,MA;Lloyd,IK;Haller,WK;Lawn,BR
验证自由型饰面和陶瓷芯层的玻璃结合可以产生坚固的界面、化学耐久性和外观美观，最重要的是，抗分层的假设。（NobelRondo™ Press瓷，Nobel BioCare AB和Sagkura Interaction瓷，Elephant Dental）和匹配的氧化铝或氧化锆芯陶瓷（Procera氧化铝，Nobel BioCare AB，BioZyram氧化钇稳定的四氧化锆多晶，Cyrtina Dental）与设计的玻璃结合，定制以匹配组分的热膨胀系数并且不含有毒元素。使用扫描电子探针分析来表征连接界面的化学性质，特别是确认离子的相互扩散。使用维氏压痕将受控的角裂纹驱动到玻璃夹层中，以评估界面的韧性。发现玻璃结合的界面相对于没有玻璃熔融的界面具有坚固的完整性，意义瓷贴面与氧化铝或氧化锆核之间界面的结构完整性是所有瓷贴面的寿命的关键因素，陶瓷牙冠和固定假牙。
OBJECTIVETest the hypothesis that glass-bonding of free-form veneer and core ceramic layers can produce robust interfaces, chemically durable and esthetic in appearance and, above all, resistant to delamination.METHODSLayers of independently produced porcelains (NobelRondo™ Press porcelain, Nobel BioCare AB and Sagkura Interaction porcelain, Elephant Dental) and matching alumina or zirconia core ceramics (Procera alumina, Nobel BioCare AB, BioZyram yttria stabilized tetragonal zirconia polycrystal, Cyrtina Dental) were joined with designed glasses, tailored to match thermal expansion coefficients of the components and free of toxic elements. Scanning electron microprobe analysis was used to characterize the chemistry of the joined interfaces, specifically to confirm interdiffusion of ions. Vickers indentations were used to drive controlled corner cracks into the glass interlayers to evaluate the toughness of the interfaces.RESULTSThe glass-bonded interfaces were found to have robust integrity relative to interfaces fused without glass, or those fused with a resin-based adhesive.SIGNIFICANCEThe structural integrity of the interfaces between porcelain veneers and alumina or zirconia cores is a critical factor in the longevity of all-ceramic dental crowns and fixed dental prostheses.