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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:14 |
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Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Optics, Spectroscopy, Plasma and Lasers
Title:
Chemical composition identification of dental implants by Laser Induced Breakdown Spectroscopy
Authors:
Andrei STANCALIE(1), Emanuel AXENTE(2,3), Marimona MIROIU(2), Felix SIMA(1), E.BUZAMET(3), D.BUDEI(3), Valentin CRACIUN(2,3)
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Affiliation:
1)Center for Advanced Laser Technologies (CETAL), National Institute for Laser Plasma and Radiation Physics, Magurele, Romania
2)Lasers Department, National Institute for Laser Plasma and Radiation Physics, Magurele , Romania
3)Dentix Millennium SRL, Sabareni, 087153, Giurgiu, Romania
E-mail
andrei.stancalie@inflpr.ro
Keywords:
LIBS, dental implants
Abstract:
We present in this work, the chemical composition identification of several commercial dental implants by Laser Induced Breakdown Spectroscopy (LIBS). Due to its advantages, such as real time monitoring of ablated species, fast and spatially precise, LIBS is a promising and suitable tool which permits analysis of hard materials, in small amounts with no sample preparation necessary. Our research focuses on chemical composition identification and detection of contaminants and defects that may occur due to superficial processing of commercially available dental implants. The system we used in our study integrates a Nd:YAG laser source at 1064 nm with tunable energy up to 197 mJ. Recorded spectra from the resulted plasma are collected by six spectrometers displayed around the target within the range of 200 to 900 nm. After optimisation of processing parameters, similar conditions were kept for all samples. The energy was set to 50 mJ per pulse for 40 accumulation laser pulses with a 10 Hz repetition rate and 1.27 µs delay. For the chemical identification of components, the main emission lines and spectroscopy data were extracted from NIST Database, to be compared with experimental results. For each sample, multiple irradiations were conducted, in different distinct regions. Irradiated samples were manufactured of titanium or titanium alloy like the commercial Ti-6Al-4V alloy. Preliminary results confirm the presence of Ca (Ca I 422.67 nm). Complementary studies by energy-dispersive X-ray spectroscopy accompanied by morphological investigations by scanning electron microscopy are presented to support LIBS investigations.
Acknowledgement:
This work has been financed by the National Authority for Research and Innovation in the frame of Nucleus programme- contract 4N/2016 and by a grant financed in the framework of Competitiveness Operational Program 2014-2020, ANCSI/MFE, project number MIFID ID P_39_366 Cod MySMIS 104809.
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