Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10923/1072
Tipo: article
Título: Accuracy assessment of prototypes using multi-slice and cone beam computed tomography
Autor(es): Primo, B.T
Presotto, A.C
Oliveira, H.W.
Gassen, H.T.
Miguens-Júnior, S.A.Q.
Silva-Júnior, A.N.
Hernandez, P.A.G.
Editor: Elsevier Ltd.
En: Int J Oral Maxillofac Surg 2012;41(10):1291–5.
Fecha de Publicación: 2012
Volumen: 41
Número: 10
Primera página: 1291
Última página: 1295
Palabras clave: CONE BEAM COMPUTERIZED TOMOGRAPHY
HELICAL COMPUTED TOMOGRAPHY
MAXILLOFACIAL SURGERY
FACIAL BONES
SKELETON
TOMOGRAFIA COMPUTADORIZADA
CIRURGIA BUCOMAXILOFACIAL
ODONTOLOGIA
Resumen: The objective of this study was to assess and quantify the dimensional error of prototypes produced using multi-slice and cone-beam computed tomography(MSCT and CBCT). Titanium screws were inserted into a dry skull at diferente points of the midface. The skull was scanned using MSCT (LightSpeed161) with pixel size 0.3 mm and CBCT (i-CAT Cone-Beam 3DTM) with voxel sizes 0.25 and 0.4 mm. Prototypes were printed (fabricated) using a ZPrinter 3101 device. Both the dry skull (gold standard) and the prototypes were measured using a Mitutoyo 3D coordinate measuring system with three perpendicular axes (X, Y, and Z). The prototype produced from MSCT data presented a mean dimensional error of 0.62%; the two models produced with CBCT images yielded errors of 0.74% with voxel size 0.25 mm and 0.82% with voxel size 0.40 mm. No significant differences in dimensional errors were observed across the prototypes (p = 0.767; Friedman’s non-parametric test). Prototypes produced from CBCT data using voxel sizes of 0.25 and 0.4 mm, and also the one produced from MSCT data using pixel size 0.3 mm, showed acceptable dimensional errors and can therefore be used in the fabrication of prototypes in dentistry.
URI: http://hdl.handle.net/10923/1072
DOI: 10.1016/j.ijom.2012.04.013
PMID: 22578568
ISSN: 0901-5027
Aparece en las colecciones:Artigo de Periódico

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