不同表面处理及老化对氧化锆陶瓷抗折强度的影响

›› 2015, Vol. 35 ›› Issue (5): 359-361.

不同表面处理及老化对氧化锆陶瓷抗折强度的影响

陈莹莹¹,张昕²,马小青²,张怀勤³

1. 江苏省口腔医院
2. 江苏省口腔医院南京医科大学口腔医学研究所
3. 江苏省口腔医院修复科

收稿日期:2014-12-26 修回日期:2015-02-03 出版日期:2015-05-28 发布日期:2015-05-13
通讯作者: 张怀勤 E-mail:dentzhq@126.com
基金资助:
江苏高校优势学科建设工程资助项目

Influence of surface treatment and degradation on the flexural strength of zirconia ceramics

Received:2014-12-26 Revised:2015-02-03 Online:2015-05-28 Published:2015-05-13

摘要/Abstract

摘要： ［摘要］目的研究打磨、抛光、上釉及老化对氧化锆陶瓷抗折强度的影响。方法将36片氧化锆陶瓷分成打磨组、抛光组、上釉组3组，每组试件按不同的老化时间分为0 h组（对照组）和10 h组（n=6）。将10 h组瓷块置于134 ℃，0.2 MPa 的水热环境下,进行10 h的老化试验。每组各取一个试件，用 X 线衍射 ( X-ray diffraction,XRD ) 仪测定单斜相含量,万能力学试验机测试所有试件抗折强度。结果 XRD分析显示老化前的所有试件均未显示单斜相。老化后所有组均出现单斜相，打磨组单斜相含量最高，上釉组最低。抗折强度所有组均无统计学意义（P>0.05）。结论老化后所有试件单斜相含量均有所增加，但打磨、抛光、上釉及老化处理对氧化锆陶瓷抗折强度未产生影响。

关键词: 氧化锆, 陶瓷, 表面处理, 老化

Abstract: Objective To evaluate the influence of grinding,polishing,glazing,and degradation on the flexural strength of zirconia ceramics.Methods 36 specimens of zirconia ceramics were divided into 3 groups (grinding,polishing,and glazing),and specimens in each group were further divided into two groups based on different aging time,denoted as group 0 h (as control) and group 10 h (n=6).The specimens in group 10 h were autoclaved at 134 ℃,0.2 MPa for 10 h.X-ray diffraction (XRD) was used to estimate the relative amount of monoclinic phase of one specimen in each group.Additionally,three-point flexure test was used to calculate the flexural strength.Results No specimens exhibited the monoclinic phase before degradation.All groups exhibited an increase in the amount of monoclinic phase after degradation.The grinding group exhibited the highest amount of monoclinic phase,and the lowest amount was observed in the glazing group.Flexural strength test revealed that there were no significant differences regarding the flexural strength of any group (P>0.05).Conclusions Although all groups exhibited an increase in the amount of monoclinic phase after degradation,there was no influence of grinding,polishing,glazing,and degradation on the flexural strength of zirconia ceramics.

Key words: zirconia, ceramic, surface treatment, degradation

中图分类号:

R783.2

陈莹莹张昕马小青张怀勤. 不同表面处理及老化对氧化锆陶瓷抗折强度的影响[J]. 口腔医学, 2015, 35(5): 359-361.

参考文献

[1] Vagkopoulou T, Koutayas SO, Koidis P, et al. Zirconia in dentistry: Part 1. Discovering the nature of an upcoming bioceramic[ J ]. Eur J Esthet Dent， 2009，4（2）：130–151.

[2] Hisbergues M, Vendeville S, Vendeville P. Zirconia: Established facts and perspectives for a biomaterial in dental implantology[ J ]. Biomed Mater Res B appl Biomater， 2009，8（2）519–529.

[3] Kobayashi K, Kuwajima H, Masaki T. Phase change and mechanical properties of ZrO2-Y2O3 solid electrolyte after aging [ J ] .Solid State Ion ，1981 ，3（4）：489–495.

[4] Ardlin BI. Transformation-toughened zirconia for dental inlays ,crowns and bridges : che- micalst ability and effect of low- temperature aging on flexural strength and surface structure [ J ]. Dent Mater ，2002 ，18（8）：590 – 595.

[5] Shah SK，McNitt—Gray MF，Rogers SR，et al．Computer aided characterization of the solitary pulmonary nodule using volumetric and contrast enhancement features [ J ]．Acad Radiol，2005，12（10）：1310 –1319．

[6] Guazzato M，Albakry M，Quach L，el al．Influence of surface and heat treatments on the flexural strength of a glass-infiltrated alumi-na／zirconia-reinforced dental ceramic[J]．Dent Mater，2005，21(5)：454 –463．

[7] 伊元夫，刘洪臣，王晨田，等．牙科氧化锆陶瓷的低温时效性能研究[ J ]．中华口腔医学会，2008，3（43）：172-177.

[8] Nakamura T, Usami H, Ohnishi H, et al. The effect of adding silica to zirconia to counteract zirconia’s tendency to degrade at low temperatures[ J ]. Dent Mater, 2011, 30（3）: 330–335.

[9] Kim HT, Han JS, Yang JH, et al. The effect of low temperature aging on the mechanical property & phase stability of Y-TZP ceramics[ J ]. J Adv Prosthodont， 2009，1（3）：113–117.

[10] Vanni L，Valter S. Low temperature degradation aging of zirconia ： A critical review of the relevant aspects indentistry [ J ] . Dent Mater，2010，26（8）：807 – 820.

[11] Chevalier. What future for zirconia as a biomaterial [ J ]. Bio-materials，2006，27（4）：535-543.

[12] Borchers L, Stiesch M, Bach FW, et al. Influence of hydrothermal and mechanical conditions on the strength of zirconia[ J ]. Acta Biomater，2010，6（12）：4547–4552.

[13] Lee T-H, Lee S-H, Her S-B, et al. Effects of surface treatments on the susceptibilities of low temperature degradation by autoclaving in zirconia[ J ]. Biomed Mater Res B Appl Biomater ，2012,100（5）：1334–1343.

[14] Boulch F，Dessemond L，Djurado E. Delay of tetragonal- to monoclinic- transition in water vapour due to nano structural effect [ J ] . Eur Ceram Soc ，2004，24（6）：1181 –1185.

[15] Sylvain Deville，Jerome Chevalier， Laurent Gremillard，Influence of surface finish and residual stresses on the ageingsensitivity of biomedical grade zirconia [ J ]. Biomaterials，2006，27（10）：2186 –2192.

[16] Ban S，Sato H，Suehiro Y，et al. Biaxial flexure strength and low temperature degradation of Ce-TZP/Al2O3 nanocomposite and Y-TZP as dental restoratives [ J ]. Biomed Mater Res B Appl Biomater ，2008，87（2）：492–498.