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Proceedings Paper

Microspectral analysis with laser in microleakage evaluation between infrastructure and veneer materials in fixed partial dentures
Author(s): Meda L. Negrutiu; Cosmin Sinescu; Gheorghe Draganescu; Carmen Todea; Dorin Dodenciu; Roxana Rominu
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Paper Abstract

The microleakage at the interface between the metal infrastructure and the veneering part of the fixed partial dentures are a common problem of aesthetic dentistry. It is possible to use the method of laser microspectral analysis for investigations of microleakage at the metal-veneering material interfaces in fixed partial prostheses. The laser microspectral analysis device LMA-10 (Carl Zeiss, Jena) was used equipped with a diffraction spectrometer PGS-2 (Carl Zeiss, Jena). Different fixed partial dentures were used to determine the microleakage between the metal infrastructure and the veneering material. The distribution of chemical elements at interface infiltration was investigated, making a series of craters and establishing the spectra of the vapours emitted from the craters. Data was gathered in various tables of chemical elements showing the quality and the quantity of microleakage. The laser microspectral analysis is a punctual method of analysis, which allows to investigate small quantities of materials of around 0.1 μg. This method allows to establish the content of atoms and molecules and to perform semi-quantitative and quantitative analysis. By this method it is possible to establish trace elements, i. e. with concentration of ppm (parts per million).

Paper Details

Date Published: 27 February 2008
PDF: 8 pages
Proc. SPIE 6843, Lasers in Dentistry XIV, 68430Q (27 February 2008); doi: 10.1117/12.764990
Show Author Affiliations
Meda L. Negrutiu, Univ. of Medicine and Pharmacy Victor Babes Timişoara (Romania)
Cosmin Sinescu, Univ. of Medicine and Pharmacy Victor Babes Timişoara (Romania)
Gheorghe Draganescu, Politehnica Univ. Timisoara (Romania)
Carmen Todea, Univ. of Medicine and Pharmacy Victor Babes Timişoara (Romania)
Dorin Dodenciu, Univ. of Medicine and Pharmacy Victor Babes Timişoara (Romania)
Roxana Rominu, Univ. of Medicine and Pharmacy Victor Babes Timişoara (Romania)


Published in SPIE Proceedings Vol. 6843:
Lasers in Dentistry XIV
Peter Rechmann; Daniel Fried, Editor(s)

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