Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Artifact expression of polylactic acid/hydroxyapatite/graphene oxide nanocomposite in CBCT: a promising dental material

Full text
Nejaim, Yuri [1] ; Gomes, Amanda Farias [1] ; Queiroz, Polyane Mazucatto [1] ; Siqueira, Andre da Silva [2] ; Riveros Munoz, Pablo Andres [2] ; Macedo Fechine, Guilhermino Jose [2] ; Haiter-Neto, Francisco [1]
Total Authors: 7
[1] Univ Estadual Campinas, Piracicaba Dent Sch, Dept Oral Diag, Av Limeira 901, Piracicaba 13414903, SP - Brazil
[2] Univ Prebiteriana Mackenzie, Graphene & Nanomat Res Ctr, MackGraphe, Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: CLINICAL ORAL INVESTIGATIONS; v. 24, n. 5, p. 1695-1700, MAY 2020.
Web of Science Citations: 0

Objective To evaluate the artifact expression of a new material-polylactic acid (PLA)/hydroxyapatite (HA)/graphene oxide (GO) nanocomposite-and compare it with that of commonly used dental materials, using cone-beam computed tomography. Materials and methods Cylinders of amalgam alloy, metal alloy, titanium, gutta-percha, and PLA/HA/GO were individually placed in the center of an acrylic phantom. Three images of each phantom + cylinder set were acquired using a Picasso Trio unit (Vatech, Hwaseong, South Korea) set at 90 kVp, 3.7 mA, 0.2 mm(3) voxel size, and 12 x 8.5 cm FOV. Three images of a control group (sound phantom) were also obtained. Eight ROIs were established in each image to evaluate the standard deviation (S.D.) of gray values in the ImageJ Software. The Kruskal-Wallis test with the Student-Newman-Keuls post hoc was employed, considering a significance level of 5%. Results There were no significant differences in S.D. between the control and PLA/HA/GO images (p = 0.712). Both control and PLA/HA/GO showed fewer image artifacts than the other materials (p < 0.05). The images of the amalgam alloy did not differ from the metal alloy images (p = 0.691), showing more artifacts than the gutta-percha (p = 0.028) and titanium (p = 0.051). Conclusions The PLA/HA/GO produced fewer artifacts and a better-quality image than the other tested materials. (AU)

FAPESP's process: 14/22840-3 - Direct dry transfer of CVD graphene to 2D and 3D polymeric substrates
Grantee:Guilhermino José Macêdo Fechine
Support type: Regular Research Grants