Universidade De Vigo

Stefano Chiussi

Pio Manuel Gonzalez Fernandez

Betty Mireya Leon Fong

Julia De La Asuncion Serra Rodriguez

Benigno Coello Delgado

Julia Serra Rodríguez

Esther Rebollar Gonzalez

Miriam López Álvarez

Pio Manuel González Fernández

Maria Rodríguez Domínguez

Aldara Pan Cabo

María RODRÍGUEZ DOMÍNGUEZ

Cosme Rodríguez Valencia

Maria Estela Balboa Franco

The present invention relates to a quantitative ex vivo method for the complementary diagnosis of the degree of dental demineralization through the use of Raman spectroscopy, which comprises quantifying the intensities and areas of a plurality of Stoke bands of the spectrum, and defining and calculating indices that result from dividing the areas of certain bands of interest. The diagnosis is determined by the proximity of the values of these indices to the values previously obtained for the normal pattern of dental mineralization established by analyzing healthy dental parts. This method provides a complementary biomedical technique for quantitative ex vivo analysis of the degree of dental demineralization on dental tissue remains extracted by medical prescription, and the information obtained will facilitate the prescription of suitable treatment to reduce or prevent said demineralization.

Method for diagnosing dental demineralization processes

Disclosed embodiments include methods for cleaning wax, substantially equivalent impurities, and other contaminants from porous stones in historical monuments and artworks using nondestructive means. According to one embodiment the method for removal of contaminants from porous stones using laser comprises the following method steps: (a) identifying regions of a contaminant on the porous stone monument; (b) characterizing the contaminant on the porous stone monument; (c) exposing the contaminant on the porous stone monument to irradiation from a laser characterized by a wavelength, a pulse length, a repetition rate, and a laser energy fluence determined and optimized for a given contaminant-porous stone system and the laser characteristics; and (d) adaptively evaluating the cleaning results by quantifying the thickness of the remaining contaminant.

Method for removal of wax from porous stones in historical monuments

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Vigo, Spain

Stefano Chiussi