Inaccuracies in additive manufactured medical skull models caused by the DICOM to STL conversion process

Huotilainen, Eero; Jaanimets, Risto; Valášek, Jiří; Marcián, Petr; Salmi, Mika; Tuomi, Jukka; Mäkitie, Antti; Wolff, Jan

doi:10.1016/j.jcms.2013.10.001

Cited by 177 publications

(136 citation statements)

References 36 publications

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“…To accommodate the need for precision pre-operative planning, surgeons frequently need guidance such as a threedimensional (3D) model to display complex cranial structures [2,3]. Over the past decade, 3D models have been employed widely in maxillofacial surgery [4].…”

Section: Introductionmentioning

confidence: 99%

“…A 3D model is a manufactured model made by a 3D printer using digital imaging and communication for medicine (DICOM) data from a computed tomography (CT) scan, and then, converted into computer-assisted design (CAD) data [3,[4][5][6][7]. To illustrate an example of a 3D model, Fig.…”

Section: Introductionmentioning

confidence: 99%

“…To illustrate an example of a 3D model, Fig. 1 presents a model that was produced with a fused deposition material (FDM) printer using polymer materials which are extruded by a printer nozzle and built layer-by-layer into a structured model [3]. A 3D model can be used as a real-size measurement and simulate a reconstruction plate that will be used in surgery as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…This important aspect has not been investigated sufficiently, although medical applications of 3D models have been recently widely reported in cranio-maxillofacial surgery. Further, the requirements for the accuracy criteria depend on each application type [3,8]. The aim of this…”

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Model Printing in Oral and Maxillofacial Reconstructive Surgery: Comparison of Three-Dimensional Models and Multislice Computed Tomography Scans

2018

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Objective: The objective of this study is to compare fabrication of commonly used three-dimensional (3D) models with original multislice computed tomography (MSCT) scan data for accuracy and precision in reconstruction surgery.Methods: MSCT data from 10 samples are processed and manufactured to be 3D models. Both groups are then measured and analyzed for the purpose of comparison. Results:The average mandibular measurement difference between 3D models and MSCT scans is 0.26 mm more <2%. The final results of the comparison reveal high accuracy in 3D models compared to MSCT scan data. Conclusion:The 3D model could be considered as surgical guidance for maxillofacial reconstruction surgery since it yields highly accurate results.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three-Dimensional Model Printing in Oral and Maxillofacial Reconstructive Surgery: Comparison of Three-Dimensional Models and Multislice Computed Tomography Scans

2018

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“…Scientists also present work about a comparative evaluation of CBCT and MDCT at the stage of image reconstruction [13] and [14] and accuracy reconstruction 3D model [15]. The reconstruction process is also dependent on spatial and contrast resolution of computer tomography systems [16] and [17] method of segmentation [18] software algorithms [19] and [20], and a manufacturing technology [7] and [21].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Accuracy of Reconstructed Two Teeth Models Manufactured Using the 3DP and FDM Technologies

Budzik

Burek

Bazan

et al. 2016

SV-JME

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Traditional computer modelling is performed using CAD systems. Everything starts with a constructor idea. They present their concept on a technical drawing and then perform it in a virtual environment of a 3D model. This model may then be manufactured with the use of available methods. The problem arises when technical documentation of an object, for example, a tooth model, is not available.2D images are the traditional way of presenting anatomical structures; unfortunately, this method is sometimes ineffective. In advanced cases of dental conditions, there are difficulties in the recognition and proper interpretation of 2D images of the affected area. This is why other ways to show the shape of the complex internal structures have been researched, such as the (3DP and FDM). They were similarly aligned in the work space of both printers to maintain similar conditions of printing, and similar layer thicknesses of 0.1 mm and 0.13 mm were used. The printed models were scanned using a focus variation (FV) microscope. The scanned geometry of the models of the two teeth was compared with the geometry of the teeth after their segmentation and filtering. A fitting process was carried out using the best fit algorithm with a fitting condition of 0.001 mm. The achieved accuracy of the FV measurements was significantly higher than the accuracy of the used printing methods. FV can be applied to performing 3D scans of complex shapes such as the crown and roots of a tooth. 3DP models have more homogenous structure, whereas layer structure is easy to recognize for FDM models. Due to that, the 3DP models have to be strengthened using infiltration, which makes it more difficult to predict the final dimensions and to achieve required accuracy. Keywords: dental model, reverse engineering, rapid prototyping, focus variation Highlights • The accuracy of FDM and 3DP techniques were examined in terms of manufacturing dental models such as tooth models.• The infiltration applied to the 3DP models reduced in accuracy compared to FDM models.• For the FDM models, the values of mean deviation were negative and met the accuracy specified by the printer's manufacturer.• Due to infiltration the values of mean deviation of 3DF models were positive.• The infiltration also caused the models manufactured with the FDM to be more accurate than the 3DP ones.• It was determined that the focus variation method can be applied to measure parts with a complex shape, such as the crown and roots of a tooth.

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3D Printing in Hospital Administration and Management

2024

3D Printing in Healthcare

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Inaccuracies in additive manufactured medical skull models caused by the DICOM to STL conversion process

Cited by 177 publications

References 36 publications

Three-Dimensional Model Printing in Oral and Maxillofacial Reconstructive Surgery: Comparison of Three-Dimensional Models and Multislice Computed Tomography Scans

Three-Dimensional Model Printing in Oral and Maxillofacial Reconstructive Surgery: Comparison of Three-Dimensional Models and Multislice Computed Tomography Scans

Analysis of the Accuracy of Reconstructed Two Teeth Models Manufactured Using the 3DP and FDM Technologies

3D Printing in Hospital Administration and Management

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