Open AccessZirconia dental implants degradation by confocal Raman microspectroscopy: analytical simulation and experiments
Author(s) -
Nadia Djaker,
Claudine Wulfman,
Michaël Sadoun,
Marc Lamy de la Chapelle
Publication year - 2013
Publication title -
biomedical optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.362
H-Index - 86
ISSN - 2156-7085
DOI - 10.1364/boe.4.000725
Subject(s) - materials science , cubic zirconia , confocal , raman spectroscopy , optics , monoclinic crystal system , degradation (telecommunications) , mineralogy , composite material , chemistry , crystallography , computer science , telecommunications , ceramic , physics , crystal structure
Subsurface hydrothermal degradation of yttria stabilized tetragonal zirconia polycrystals (3Y-TZP) is presented. Evaluation of low temperature degradation (LTD) phase transformation induced by aging in 3Y-TZP is experimentally studied by Raman confocal microspectroscopy. A non-linear distribution of monoclinic volume fraction is determined in depth by using different pinhole sizes. A theoretical simulation is proposed based on the convolution of the excitation intensity profile and the Beer-Lambert law (optical properties of zirconia) to compare between experiment and theory. The calculated theoretical degradation curves matche closely to the experimental ones. Surface transformation (V0) and transformation factor in depth (T) are obtained by comparing simulation and experience for each sample with nondestructive optical sectioning.