title: Study of dental enamel and synthetic hydroxyapatite irradiated by EPR at K-band.
abstract: In this preliminary work the EPR spectra of a small dental enamel block and a synthetic B-type hydroxyapatite in powder form, both irradiated with gamma rays, were analyzed in K-band. The spectra of the dental enamel block allow the analysis of independent components with different angular orientations, while the study of the dosimetric properties of the synthetic hydroxyapatites showed good performance of this spectrometer. K-band spectra show better resolution when compared to X-band, while using significantly less sample material.
authors.affiliation: Departamento Física e Matemática, FFCLRP, Universidade de São Paulo, 14040-901 Ribeirão Preto, SP, Brazil. adevailton@uft.edu.br
authors.forename: A B
authors.initials: AB
authors.lastname: Santos
authors.forename: A M
authors.initials: AM
authors.lastname: Rossi
authors.forename: O
authors.initials: O
authors.lastname: Baffa
mesh_terms: D001822:Body Burden; D003743:Dental Enamel / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D017886:Durapatite / Q000737:chemistry* / Q000528:radiation effects*; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D005720:Gamma Rays; D006801:Humans; D066298:In Vitro Techniques; D008872:Microwaves; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods; D011874:Radiometry / Q000379:methods*; D012062:Relative Biological Effectiveness; D015203:Reproducibility of Results; D018570:Risk Assessment / Q000379:methods; D012680:Sensitivity and Specificity
chemical_list: D017886:Durapatite