Holographic evaluation of the marginal fits of complete crowns loaded at the central fossa

Terry Y. Chen, Guan L. Chang, Shih H. Wu

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

In dentistry, a defect of cementation on the margins of crowns accumulates bacterial plaque easily. This can result in recurrent caries and periodontal disease. In this paper holographic interferometry was applied to evaluate the effect of masticatory force on various complete crowns. Four complete molar crowns made from different materials (Au alloy, Pd-Ag alloy, Ni-Cr alloy, and porcelain fused to metal) were tested. The out-of-plane displacements of the crown specimens were measured by the method of multiple observations. The displacements measured range from 6 to 10 μm under normal load (25 N). However, the marginal openings of all four crowns were estimated to be less than 0.2 μm. In addition the defect of the crown was examined.

原文English
頁(從 - 到)1364-1368
頁數5
期刊Optical Engineering
34
發行號5
DOIs
出版狀態Published - 1995

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 工程 (全部)

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