8-2006-Friction and wear behavior of dental feldspathic porcelain.pdf

下载文档

2
0
约3.58万字
约 11页
2017-04-09 发布于江苏
举报
版权申诉
保障服务

8-2006-Friction and wear behavior of dental feldspathic porcelain.pdf

1、本文档共11页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。

8-2006-Friction and wear behavior of dental feldspathic porcelain

Ar ( w m r l w n h ? K 1 a t l [ a e t o o a c i i 0 dWear 261 (2006) 611–621 Friction and wear behavior of dental feldspathic porcelain H.Y. Yu a,b, Z.B. Cai a, P.D. Ren a, M.H. Zhu a, Z.R. Zhou a,? a Tribology Research Institute, Key Laboratory of Advanced Technologies of Materials, Southwest Jiaotong University, Chengdu 610031, PR China b West China College of Stomatology, Sichuan University, Chengdu 610041, PR China Received 13 October 2004; received in revised form 15 December 2005; accepted 24 January 2006 Available online 23 March 2006 bstract The friction and wear behavior of dental feldspathic porcelains against uniform Si3N4 balls has been investigated using a small amplitude eciprocating apparatus under simulated oral conditions. The variables of load (10–40 N), reciprocating amplitude (100–500 m), frequency 1–4 Hz) and use of artificial saliva lubrication were selected. Tests lasting up to 10,000 cycles were conducted. The bonded-interface technique as introduced into the wear test for the subsurface damage evaluation. Special attention was paid to the effects of friction conditions of tests, aterial properties and wear mechanism of dental porcelains. The results show Vita VMK95 possesses a lower friction coefficient and better wear esistance than Cerec Vitablocs MarkII. Among three parameters of the tests on the friction coefficient and wear depth of dental porcelains, the oad effect is prominent. Artificial saliva plays an important role in lowering the friction coefficient and wear loss of dental porcelains. Abrasive ear is the main wear mechanism for both, but brittle cracks and delaminations are more frequent for Cerec Vitablocs MarkII, especially under on-lubricated friction. Surface brittle cracks are more dominant in low sliding cycles while subsurface cone or lateral cracks are prominent in igh sliding cycles. 2006 Elsevier B.V. All rights reserved. face t F m e o e t r [ t o t m geywords: Dental porcelains; Friction and wear; Sliding contact;