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Evaluation of dimensional accuracy of 3D printed mandibular model using two different additive manufacturing techniques based on ultra-low dose multislice computed tomography scan data ; A diagnostic accuracy study / Noran Mohamed Hesham ; Supervised Hossam Ahmed Mohamed Kandil , Iman Ismail Dakhli

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Noran Mohamed Hesham , 2021Description: 151 P. : charts , facsimiles ; 25cmOther title:
  • تقييم دقة أبعاد نموذج الفك السفلى المنشأ بواسطة الطباعة ثلاثية الابعاد عن طريق تقنيتين من تقنيات التصنيع المضاف من خلال استخدام التصوير المقطعي بالحاسوب متعدد الشرائح والجرعة شديده الانخفاض : دراسة دقة تشخيصية [Added title page title]
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Dissertation note: Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral Radiology and Diagnosis Summary: Aim: The aim of the current study is to compare and validate the dimensional accuracy of two of the most popular 3D printing techniques; highly professional stereolithography (SLA) and lowcost fused deposition modeling (FDM), using 3D printed mandibular models based on ultra-low dose MSCT scan data. Methodology: Ten linear measurements were measured directly on mandibular model between anatomical landmarks using digital caliper. Radio-opaque markers were fixed on these anatomical landmarks to serve as the reference standard for all measurements. The mandibular model was scanned using ultra-low dose MSCT machine at 80 kVp,10 mA. MSCT scans were exported and transferred in DICOM format. Accordingly, the STL file was generated by 2InVesalius 33 software, in addition to2Meshmixer 3.53 software for optimizing and finishing of the STL file. The scanned model was saved as STL file format. 3D printing was done using two different additive manufacturing techniques; SLA using 2Form 2 printer3 and FDM using 2Zortax M300 printer3.The scanned model was printed 7 times per each printer. Same ten linear measurements were recorded for all the printed models. Results: The statistical analysis of the collected data showed promising results.The precision of both SLA and FDM showed no statistically significant difference reflecting their high ability of repeatability. Regarding the trueness, there is a statistically significant difference in the dimensional error of both techniques in comparison to the reference model, where the mean relative difference is (0.30%) and (-0.97%) and the mean absolute difference is (0.13 mm) and (-0.44 mm) for SLA and FDM, respectively.
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Item type Current library Home library Call number Copy number Status Date due Barcode
Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.05.Ph.D.2021.No.E (Browse shelf(Opens below)) Not for loan 01010110084830000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.05.Ph.D.2021.No.E (Browse shelf(Opens below)) 84830.CD Not for loan 01020110084830000

Thesis (Ph.D.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral Radiology and Diagnosis

Aim: The aim of the current study is to compare and validate the dimensional accuracy of two of the most popular 3D printing techniques; highly professional stereolithography (SLA) and lowcost fused deposition modeling (FDM), using 3D printed mandibular models based on ultra-low dose MSCT scan data. Methodology: Ten linear measurements were measured directly on mandibular model between anatomical landmarks using digital caliper. Radio-opaque markers were fixed on these anatomical landmarks to serve as the reference standard for all measurements. The mandibular model was scanned using ultra-low dose MSCT machine at 80 kVp,10 mA. MSCT scans were exported and transferred in DICOM format. Accordingly, the STL file was generated by 2InVesalius 33 software, in addition to2Meshmixer 3.53 software for optimizing and finishing of the STL file. The scanned model was saved as STL file format. 3D printing was done using two different additive manufacturing techniques; SLA using 2Form 2 printer3 and FDM using 2Zortax M300 printer3.The scanned model was printed 7 times per each printer. Same ten linear measurements were recorded for all the printed models. Results: The statistical analysis of the collected data showed promising results.The precision of both SLA and FDM showed no statistically significant difference reflecting their high ability of repeatability. Regarding the trueness, there is a statistically significant difference in the dimensional error of both techniques in comparison to the reference model, where the mean relative difference is (0.30%) and (-0.97%) and the mean absolute difference is (0.13 mm) and (-0.44 mm) for SLA and FDM, respectively.

Issued also as CD

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