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Evaluation of the accuracy of orthodontic models prototyped with entry-level LCD-based 3D printers: a study using surface-based superimposition and deviation analysis
- Source :
- Clinical Oral Investigations. 26:303-312
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- The objective of this study was to evaluate the accuracy of dental models prototyped via entry-level liquid crystal display (LCD) 3D printers.Identical prototyped models were generated from a master digital file testing two entry-level LCD-based 3D printers and using one professional-grade 3D printer as gold standard (GS), with 50-µm and 100-µm layer thickness. Each 3D-printed model was scanned, and a specific 3D technology was used to perform surface-based superimposition and deviation analysis to evaluate trueness and precision. The distances between surface points of two superimposed models were converted to root mean square (RMS) and statistically analyzed.The RMS values detected were significantly higher in dental models prototyped with entry-level compared to the SLA printer (p 0.001), in terms of trueness (50 µm: GS 0.075 mm, LCD1 0.192 mm, LCD2 0.179 mm; 100 µm: GS 0.066 mm, LCD1 0.209 mm, LCD2 0.199 mm) and precision (50 µm: GS 0.028 mm, LCD1 0.075 mm, LCD2 0.085 mm; 100 µm: GS 0.039 mm, LCD1 0.096 mm, LCD2 0.101 mm). No significant differences were found between the values of RMS of both entry-level 3D printers (p 0.05). Layer thickness did not affect either the trueness or precision of the 3D-printed models (p 0.05).Entry-level LCD-based 3D printers are not as accurate as professional-grade 3D printer, but still close to orthodontics clinical threshold values.Clinicians should evaluate the intended application of 3D-printed orthodontic models before using entry-level 3D printers.
- Subjects :
- Surface (mathematics)
Computer science
3D printing
Orthodontics
CAD-CAM
law.invention
Root mean square
03 medical and health sciences
0302 clinical medicine
Digital file
law
Digital orthodontics
Superimposition
General Dentistry
Simulation
Liquid-crystal display
business.industry
Dental Models
030206 dentistry
Prototyping
Models, Dental
Liquid Crystals
Digital dentistry
030220 oncology & carcinogenesis
Printing, Three-Dimensional
Computer-Aided Design
business
Subjects
Details
- ISSN :
- 14363771 and 14326981
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Clinical Oral Investigations
- Accession number :
- edsair.doi.dedup.....6f049038a0ab56c3846658b9264cef76