Method for Preparing an Exact-Size Model Using Helical Volume Scan Computed Tomography

Ono, Isao; Gunji, Hironori; Suda, Kazuyoshi; Kaneko, Fumio

doi:10.1097/00006534-199406000-00005

Cited by 59 publications

(29 citation statements)

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“…The ability to generate accurate anatomic models from volumetric CT data using stereolithography is well documented (6). A subtlety of the modeling process likely to receive considerable attention in the future is the engineering of pore size and pore directionality in the implant (Fig 2).…”

Section: Discussionmentioning

confidence: 99%

CT-Generated Porous Hydroxyapatite Orbital Floor Prosthesis as a Prototype Bioimplant

Levy¹,

Chu²,

Halloran³

et al. 1999

Journal of Neuro-Ophthalmology

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Summary: Hydroxyapatite bioceramic was used for the manufacture of an orbital floor prosthesis from spiral CT data acquired transaxially at 1-mm beam collimation, pitch of 1, and 0.2-mm reconstruction intervals. CT data were converted to vector file format for subsequent prosthesis manufacture on a stereolithography machine. The orbital floor prosthesis was engrafted onto an acrylic model of the orbit as a qualitative indication of its overall accuracy. High anatomic accuracy was achieved, as determined by visual inspection. Cross-hatching of the vector file data allowed a porous internal architecture of the prosthesis. Refinements in chemical structure of the hydroxyapatite bioceramic are expected to enhance mechanical properties.

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Section: Discussionmentioning

confidence: 99%

CT-Generated Porous Hydroxyapatite Orbital Floor Prosthesis as a Prototype Bioimplant

Levy¹,

Chu²,

Halloran³

et al. 1999

Journal of Neuro-Ophthalmology

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“…Nowadays, SL is known as the gold standard in 3D manufacturing with yield resolutions up to 0.025 mm. SL is reliable in reconstruction of internal frameworks and is more efficient in fabricating larger objects [37]. SL is largely accepted to have the best surfacing and the most accuracy of any 3D technology.…”

Section: Techniques Advantages Disadvantagesmentioning

confidence: 99%

Three-Dimensional Printing: A Novel Technology for Use in Oral and Maxillofacial Operations

Keyhan¹,

Ghanean²,

Navabazam³

et al. 2016

A Textbook of Advanced Oral and Maxillofacial Surgery Volume 3

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Three-dimensional (3D) printing is cited as "a novel, fascinating, future builder technology" in many papers and articles. Use of this technology in the field of medicine and especially oral and maxillofacial surgery is expanding. The type of manufacturing systems, materials, cost-effectiveness, and also bio-printing, with studies from around the world today, make this field a "hot-topic" in reconstructive and regenerative surgery. This chapter evaluates the latest updates and scientific uses of 3D printing.

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“…The accuracy of the reproduction lies in the range of Ϯ 0.25 mm (Wolf et al, 1993) or 0.3-0.8 mm (Kragskov et al, 1996). When using spiral CT scans for the making the layered images, the deviation is approximately Ϯ 0.5 mm (Ono et al, 1994).…”

Section: Skull Model Fabricationmentioning

confidence: 99%

Three‐dimensional cephalometry using individual skeletal laser technology models

et al. 2001

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When planning operations on the facial skull, transversal asymmetries of the maxillo-mandibular complex cannot be adequately assessed using conventional two-dimensional (2D) x-ray cephalometry. On eight patients who presented with facial skull asymmetries, a three-dimensional (3D) laser technology model (LTM) using CT data was fabricated. Five sagittal plane points and six symmetry points were marked on the LTM, measured with the FlashPoint 3-D Digitizer and then geometrically converted, such that using the sagittal plane points, sella, basion, and nasion, a method could be developed that allowed the localization of each spatial point in the three symmetry planes. Thus one could quantitatively record a patient's specific facial skull asymmetry in all three planes and a 3D measurement became feasible. Based on the measurements, the asymmetry could be assessed with respect to the sagittal, vertical, and horizontal planes. With the 3-D LTM Digitizer measuring system, the surgeon now had precise numerical information regarding the symmetry ratios of the skull at his disposal, information that would have been difficult to evaluate solely using a model analysis. The results from this study show that our measuring system is applicable and useful for complex maxillofacial asymmetries. The planning of surgical interventions was optimized because precise numerical values regarding the degree of the asymmetry were available. With the 3-D LTM Digitizer measuring system, cephalometric analysis of complex asymmetries in the three spatial planes can be pragmatically supported.

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Method for Preparing an Exact-Size Model Using Helical Volume Scan Computed Tomography

Cited by 59 publications

References 0 publications

CT-Generated Porous Hydroxyapatite Orbital Floor Prosthesis as a Prototype Bioimplant

CT-Generated Porous Hydroxyapatite Orbital Floor Prosthesis as a Prototype Bioimplant

Three-Dimensional Printing: A Novel Technology for Use in Oral and Maxillofacial Operations

Three‐dimensional cephalometry using individual skeletal laser technology models

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