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dc.typeArtigo de periódicopt_BR
dc.title[study Of The Aluminum-zinc Alloy As An Alternative Method Of Filtration In Dental X-ray Devices].pt_BR
dc.contributor.authorHaiter, Claudia Fátima Silvapt_BR
dc.contributor.authorBóscolo, Frab Norbertopt_BR
dc.contributor.authorHaiter Neto, Franciscopt_BR
dc.contributor.authorde Almeida, Solange Mariapt_BR
unicamp.authorClaudia Fátima Silva Haiter, Disciplina de Radiologia, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas.pt_BR Norberto Bóscolo,pt Haiter Neto,pt Maria de Almeida,pt
dc.subjectDental Alloyspt_BR
dc.subjectRadiography, Dentalpt_BR
dc.description.abstractThe aim of this study was to evaluate the effects of alternative filtration with the aluminum-zinc alloy in dental X-ray devices, regarding the energy spectrum, dose, contrast and image quality. This study was carried out comparing the conventional aluminum filter with aluminum-zinc alloy filters of various thicknesses and with different percentages of zinc in the alloy (2, 3, 4 and 5%). A conventional X-ray device operating with 60 and 70 kVp as well as D- and E-speed films were utilized in order to obtain images of a phantom and an aluminum step wedge. The utilization of Al-Zn filters resulted in a spectrum without hardening of beams. The rate of kerma in the air decreased 18.53%, without any alteration in contrast and image quality. The results revealed that the 2% Al-Zn alloy filter with 1.99 mm of thickness, utilized with the tension of 60 kVp and D-speed film, had the best performance. It reduced the rate of kerma without varying the indices of contrast and maintained image quality at acceptable levels, without increasing the time of exposure.en
dc.relation.ispartofPesquisa Odontológica Brasileira = Brazilian Oral Researchpt_BR
dc.relation.ispartofabbreviationPesqui Odontol Braspt_BR
dc.identifier.citationPesquisa Odontológica Brasileira = Brazilian Oral Research. v. 16, n. 1, p. 77-82pt_BR
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