title: Effective atomic numbers (Zeff) of based calcium phosphate biomaterials: a comparative study.
abstract: This study determined the interaction of radiation parameters of four biomaterials as attenuators to measure the transmitted X-rays spectra, the mass attenuation coefficient and the effective atomic number by spectrometric system comprising the CdTe detector. The biomaterial BioOss®presented smaller mean energy than the other biomaterials. The μ/ρ and Zeffof the biomaterials showed their dependence on photon energy. The data obtained from analytical methods of x-ray spectra, µ/ρ and Zeff,using biomaterials as attenuators, demonstrated that these materials could be used as substitutes for dentin, enamel and bone. Further, they are determinants for the characterization of the radiation in tissues or equivalent materials.
authors.affiliation: Development Center of Nuclear Technology- CDTN/CNEN, Avenida Presidente Antônio Carlos 6.627 Campus UFMG CEP 31270-901 Belo Horizonte, Brazil; Postgraduate Course on Nuclear Science and Techniques, UFMG Av. Antônio Carlos 6627 Campus UFMG, 31.270-90 Belo Horizonte, Brazil. Electronic address: madelon@cdtn.br.
authors.forename: Madelon Aparecida Fernandes
authors.initials: MA
authors.lastname: Zenobio
authors.affiliation: PUCMINAS- Pontifíce Catholic University of Minas Gerais, Av. Dom José Gaspar 500, 30535-901 Belo Horizonte, Brazil.
authors.forename: Elton Gonçalves
authors.initials: EG
authors.lastname: Zenobio
authors.affiliation: Development Center of Nuclear Technology- CDTN/CNEN, Avenida Presidente Antônio Carlos 6.627 Campus UFMG CEP 31270-901 Belo Horizonte, Brazil; Postgraduate Course on Nuclear Science and Techniques, UFMG Av. Antônio Carlos 6627 Campus UFMG, 31.270-90 Belo Horizonte, Brazil.
authors.forename: Teógenes Augusto
authors.initials: TA
authors.lastname: da Silva
authors.affiliation: Development Center of Nuclear Technology- CDTN/CNEN, Avenida Presidente Antônio Carlos 6.627 Campus UFMG CEP 31270-901 Belo Horizonte, Brazil; Postgraduate Course on Nuclear Science and Techniques, UFMG Av. Antônio Carlos 6627 Campus UFMG, 31.270-90 Belo Horizonte, Brazil.
authors.forename: Maria do Socorro
authors.initials: MD
authors.lastname: Nogueira
mesh_terms: D018786:Bone Substitutes / Q000032:analysis* / Q000737:chemistry*; D002130:Calcium Phosphates / Q000032:analysis* / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods; D008970:Molecular Weight; D013052:Spectrometry, X-Ray Emission / Q000379:methods*
chemical_list: D018786:Bone Substitutes; D002130:Calcium Phosphates
keywords: Dental biomaterials; Effective atomic number; Mass attenuation coefficient; X-Ray spectra