Mr. Yi Ding Profile

Yi Ding

at Tongji Univ

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Proceedings Article | 3 October 2008 Paper

The nondestructive testing research on porcelain-fused-to-metal (PFM) of oral cavity

Guo-biao Yang, Zhang Zhang, Yi Ding

Proceedings Volume 7155, 715537 (2008) https://doi.org/10.1117/12.814617

KEYWORDS: Microscopes, Inspection, X-rays, Teeth, Acoustics, Nondestructive evaluation, Interfaces, Ceramics, Manufacturing, Reflection

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PFM has the advantages of real color and anti-milled, widely be used in restoration of teeth destroyed, teeth incomplete and teeth beauty. However, due to the issue of brittleness of ceramics and its manufacturing technology, the case of lost ceramics, crack inside and interface separate often occurs in clinical. In this regard, it not only delay the restoration, but also greatly add the expense of restoration. Hence, a inspection method is required to develop, in order to judge whether there is flaw on the PFM teeth cover or inside or not both before and after restoration. This paper will adopt Scanning Acoustic Microscope and X-Ray Microscope Inspection to conduct the Nondestructive testing for PFM restoration. The results show that the above two methods are both feasible on flaw inspection. Especially, the combination of two methods could effectively inspect the flaw's depth and size on PFM cover or inside, this will provide widely application for clinical in the future.

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