Effective atomic numbers and number, energy and dose albedos of different colored thermoplastic materials

Yılmaz, Demet; Kurucu, Y.; Gürol, Ali

doi:10.1080/10420150.2022.2133713

Cited by 1 publication

(1 citation statement)

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“…Albedo, also known as the reflection coefficient, is the surface reflectivity of a material (Fidan et al 2022) and is expressed as a dimensionless fraction. Albedo factors can be calculated from the processes of Rayleigh and Compton scattering of gamma rays (Yılmaz et al 2023). In addition to albedo factors, effective atomic numbers (Z eff ) can also be calculated from the ratio of Rayleigh to Compton scattering intensities.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of some photon interaction parameters of popular restorative dental materials with a non-destructive technique

Kalecik,

Yılmaz,

Gürol

et al. 2024

Phys. Scr.

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Dental restorative materials are widely used to restore esthetics and function in prosthetic treatments. In this paper, reflection coefficients and effective atomic numbers of some restorative materials (Polyetheretherketone (PEEK), feldspathic porcelain (veneering porcelain on cobalt–chromium alloy as metal framework), lithium disilicate glass-ceramic, zircon core (veneering porcelain on yttria-stabilized tetragonal zirconia polycrystal), monolithic zirconia, and zirconia-reinforced lithium silicate glass ceramic) were measured by using 59.54 keV energy gamma rays emitted from an Am-241 radioactive source. The scattering peaks of the restorative materials were detected using an HPGe detector. The material with the highest reflection parameter was found to be PEEK. Of the dental restorative materials investigated, PEEK has the lowest effective atomic number value of 21.650 and monolithic zirconia has the highest effective atomic number value of 37.841. Effective atomic numbers can be used in non-destructive analysis and medical imaging, as is well known. In addition, the calibration curve obtained can be used in the qualitative analysis of different restorative and implant materials.

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Section: Introductionmentioning

confidence: 99%