PMID: 2488966Jan 1, 1989Paper

Some observations of the interface of metal bonding porcelain by the electron probe surface shape analyzer

Iyō Kizai Kenkyūjo hōkoku. Reports of the Institute for Medical and Dental Engineering, Tokyo Medical and Dental University
M Shiba, S Takase

Abstract

The metal bonding porcelain has been widely used for having the excellent qualities of color tone, corrosive resistance, abrasion proof and so on as the dental restorative material. And the many studies on its bonding mechanism have been done. However, there still remains some problems in operation of technical work. The Problems are how to choose polishing instruments for finishing cast metal before filled porcelain, and how to thin the part of dental neck as much as possible so that cast metal is not transmitted. So, as a clue to elucidate these problems, the appearance of metal/porcelain interface has been investigated by using the Electron Probe Surface Shape (EPSS) Analyzer. In this paper, two precious metals (KIK and HARD 2 on the market) and one nonprecious metal (TALLADIUM on the market) were used as base metal, and porcelain powder of two kinds, which were come onto the larket as VITA and DUCELAM, were used respectively. As polishing instruments, diamond point, carbide bur and pink point were used. The uneven images of metal/porcelain interface at parts of tooth top and neck, and middle part of those parts were observed respectively by EPSS analyzer, and the dimensional curves in section at three parts were also measur...Continue Reading

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