Luiz Eduardo Gregoris Rabelo1, Mike Dos Reis Bueno2, Marcus Vinícius Corrêa da Costa3, Carlo Ralph de Musis4, Cyntia Rodrigues de Araújo Estrela5, Orlando Aguirre Guedes6, Giulio Gavini7, Carlos Estrela8. 1. Department of Stomatology, Federal University of Goiás, Av. Universitária, S/n, Setor Leste Universitário, 74605-020, Goiânia, Goiás, Brazil. Electronic address: luizeduardorabelo@yahoo.com.br. 2. Department of Radiology, São Leopoldo Mandic School of Dentistry, Rua Dr. José Rocha Junqueira, 13, Pte Preta, 13045-755, Campinas, São Paulo, Brazil; CROIF Oral Radiology Center, Av. Gen. Ramiro de Noronha, 237, Duque de Caxias, 78043-272, Cuiabá, Mato Grosso, Brazil. Electronic address: mikebueno@terra.com.br. 3. Department of Stomatology, Federal University of Goiás, Av. Universitária, S/n, Setor Leste Universitário, 74605-020, Goiânia, Goiás, Brazil. Electronic address: mvccosta@terra.com.br. 4. Department of Environmental Sciences, University of Cuiabá, Av. Barão de Melgaço, 222, Porto, 78005-300, Cuiabá, Mato Grosso, Brazil. Electronic address: carlo.demusis@gmail.com. 5. Department of Oral Sciences, Evangelical University of Goiás, Av. Universitária, Km 3,5, Cidade Universitária, 75083-515, Anápolis, Goiás, Brazil. Electronic address: estrelacyntia@gmail.com. 6. Department of Oral Sciences, Evangelical University of Goiás, Av. Universitária, Km 3,5, Cidade Universitária, 75083-515, Anápolis, Goiás, Brazil. Electronic address: orlandoaguedes@gmail.com. 7. Department of Operative Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 227, Cidade Universitária, 05508-000, São Paulo, São Paulo, Brazil. Electronic address: ggavini@usp.br. 8. Department of Stomatology, Federal University of Goiás, Av. Universitária, S/n, Setor Leste Universitário, 74605-020, Goiânia, Goiás, Brazil. Electronic address: estrela3@terra.com.br.
Abstract
BACKGROUND: The appearance of high-density root obturating materials, such as gutta-percha and intracanal posts, on cone-beam computed tomography (CBCT) scans is substantially different from that seen in the specimen. This study evaluated the effectiveness of different CBCT software in the reduction of blooming artifacts when examining teeth with intracanal posts. METHOD: The sample included 42 human single-rooted teeth with two types of posts: G1 - low-fusion alloy posts; G2 - gold alloy posts. CBCT scans were obtained using two scanners, PreXion 3D Elite® and Carestream 9000C 3D®. First, the posts were measured using a digital micrometer (standard reference, control). Post diameters were determined using the Blooming Artifact Reduction (BAR) tool of the e-Vol DX software and of the PreXion3D Image Analysis System. Statistical data were evaluated using the van Der Waerden nonparametric analysis of variance and, after that, normalized data were analyzed using the Tukey test. The level of significance was set at α = 5 %. RESULTS: There were no significant differences (p > 0.05) between the diameters of intracanal posts on the CT scans when the e-Vol DX was used, or when these results were compared with those obtained using a micrometer. There were significant differences in post diameters determined using the PreXion3D Image Analysis System when compared with the e-Vol DX and the micrometer values (p < 0.05). CONCLUSIONS: The use of the e-Vol DX BAR filter eliminated blooming artifacts. There were no dimensional changes in the CBCT images of the low-fusion and gold alloy intracanal posts using the e-Vol DX BAR filter.
BACKGROUND: The appearance of high-density root obturating materials, such as gutta-percha and intracanal posts, on cone-beam computed tomography (CBCT) scans is substantially different from that seen in the specimen. This study evaluated the effectiveness of different CBCT software in the reduction of blooming artifacts when examining teeth with intracanal posts. METHOD: The sample included 42 human single-rooted teeth with two types of posts: G1 - low-fusion alloy posts; G2 - gold alloy posts. CBCT scans were obtained using two scanners, PreXion 3D Elite® and Carestream 9000C 3D®. First, the posts were measured using a digital micrometer (standard reference, control). Post diameters were determined using the Blooming Artifact Reduction (BAR) tool of the e-Vol DX software and of the PreXion3D Image Analysis System. Statistical data were evaluated using the van Der Waerden nonparametric analysis of variance and, after that, normalized data were analyzed using the Tukey test. The level of significance was set at α = 5 %. RESULTS: There were no significant differences (p > 0.05) between the diameters of intracanal posts on the CT scans when the e-Vol DX was used, or when these results were compared with those obtained using a micrometer. There were significant differences in post diameters determined using the PreXion3D Image Analysis System when compared with the e-Vol DX and the micrometer values (p < 0.05). CONCLUSIONS: The use of the e-Vol DX BAR filter eliminated blooming artifacts. There were no dimensional changes in the CBCT images of the low-fusion and gold alloy intracanal posts using the e-Vol DX BAR filter.
Authors: Andre Luiz Ferreira Costa; Karolina A C Fardim; Jennifer M Mantoani; Ana Lucia Franco Ricardo; Maria Aparecida N Jardini; Kaan Orhan; Sérgio Lúcio Pereira de Castro Lopes Journal: Biomed Res Int Date: 2022-02-24 Impact factor: 3.411