Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Sokolowski, AA; Sokolowski, AA; Kammerhofer, J; Madreiter-Sokolowski, CT; Payer, M; Koller, M; Jakse, N; Wegscheider, WA.
Accuracy assessment of 3D-printed tooth replicas.
Int J Comput Dent. 2019; 22(4):321-329
Web of Science
PubMed
- Führende Autor*innen der Med Uni Graz
- Sokolowski Armin
- Co-Autor*innen der Med Uni Graz
- Jakse Norbert
- Koller Martin
- Madreiter-Sokolowski Corina
- Payer Michael
- Sokolowski Alwin
- Wegscheider Walther
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- Abstract:
- The production of individual tooth replicas has two applications in dental practice: tooth autotransplantations and dental root analogue implants. These applications require a particularly high degree of precision. The purpose of this study was to establish and evaluate a method for fabricating individual 3D-printed tooth replicas. 10 patients requiring extraction of a wisdom tooth and a preoperative cone beam computed tomography (CBCT) scan were included; exclusion criteria were intraoperative fragmentation or fracture of the tooth. 3D Slicer 4.6.2 was used for tooth segmentation and model generation based on CBCT data. The tooth replicas were manufactured by selective laser melting (SLM). The extracted teeth and 3D-printed replicas were scanned and tested for surface deviations in CloudCompare 2.8.1. The mean absolute surface deviation between the 3D-printed teeth and the corresponding extracted teeth ranged from 0.13 to 0.25 mm, with standard deviations of 0.10 to 0.21 mm; 95% of the measured surface points deviated less than 0.474 mm; the surface area was reduced by -6.0% and the volume by -3.4%. The root mean square was 0.238 mm and the mean maximum absolute surface deviation was 0.927 mm. The SLM technique showed a high precision with a mean absolute deviation of 0.045 mm and a standard deviation of 0.04 mm. 3D-printed tooth replicas with a very high accuracy could be produced based on CBCT data. The described method is suitable for manufacturing tooth replicas for use in tooth autotransplantations or for fabricating root analogue implants.
- Find related publications in this database (using NLM MeSH Indexing)
- Cone-Beam Computed Tomography -
- Dental Implants -
- Humans -
- Printing, Three-Dimensional -
- Tooth -
- Tooth Root -
- Find related publications in this database (Keywords)
- 3D printing
- rapid prototyping
- selective laser melting
- tooth replicas
- cone beam computed tomography
- autologous tooth transplantation
- root analogue implants
- implantology