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Article

Accuracy Evaluation of Additively and Subtractively Fabricated Palatal Plate Orthodontic Appliances for Newborns and Infants–An In Vitro Study

1
Department of Orthodontics in the University Centre of Dentistry, Oral Medicine and Maxillofacial Surgery within the University Hospital Tübingen, Osianderstr. 2-8, 72076 Tübingen, Germany
2
Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Aßmannshauser Str. 4-6, 14197 Berlin, Germany
3
Department of Dental Surgery, Sechenov First Moscow State Medical University, Bolshaya Pirogovskaya Street, 19c1, 119146 Moscow, Russia
4
Section Medical Materials Science and Technology, University Hospital Tübingen, Osianderstr. 2-8, 72076 Tübingen, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Javier Gil
Materials 2021, 14(15), 4103; https://doi.org/10.3390/ma14154103
Received: 17 June 2021 / Revised: 16 July 2021 / Accepted: 19 July 2021 / Published: 23 July 2021
(This article belongs to the Special Issue Computer-Assisted Manufacturing for Dental Applications)
Different approaches for digital workflows have already been presented for their use in palatal plates for newborns and infants. However, there is no evidence on the accuracy of CAD/CAM manufactured orthodontic appliances for this kind of application. This study evaluates trueness and precision provided by different CAM technologies and materials for these appliances. Samples of a standard palatal stimulation plate were manufactured using stereolithography (SLA), direct light processing (DLP) and subtractive manufacturing (SM). The effect of material (for SM) and layer thickness (for DLP) were also investigated. Specimens were digitized with a laboratory scanner (D2000, 3Shape) and analyzed with a 3D inspection software (Geomagic Control X, 3D systems). For quantitative analysis, differences between 3D datasets were measured using root mean square (RMS) error values for trueness and precision. For qualitative analysis, color maps were generated to detect locations of deviations within each sample. SM showed higher trueness and precision than AM technologies. Reducing layer thickness in DLP did not significantly increase accuracy, but prolonged manufacturing time. All materials and technologies met the clinically acceptable range and are appropriate for their use. DLP with 100 µm layer thickness showed the highest efficiency, obtaining high trueness and precision within the lowest manufacturing time. View Full-Text
Keywords: digital workflow; SLA; DLP; trueness; precision; layer thickness; time efficiency; cleft palate plate; stimulation plate; Tübingen palatal plate digital workflow; SLA; DLP; trueness; precision; layer thickness; time efficiency; cleft palate plate; stimulation plate; Tübingen palatal plate
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MDPI and ACS Style

Aretxabaleta, M.; Unkovskiy, A.; Koos, B.; Spintzyk, S.; Xepapadeas, A.B. Accuracy Evaluation of Additively and Subtractively Fabricated Palatal Plate Orthodontic Appliances for Newborns and Infants–An In Vitro Study. Materials 2021, 14, 4103. https://doi.org/10.3390/ma14154103

AMA Style

Aretxabaleta M, Unkovskiy A, Koos B, Spintzyk S, Xepapadeas AB. Accuracy Evaluation of Additively and Subtractively Fabricated Palatal Plate Orthodontic Appliances for Newborns and Infants–An In Vitro Study. Materials. 2021; 14(15):4103. https://doi.org/10.3390/ma14154103

Chicago/Turabian Style

Aretxabaleta, Maite, Alexey Unkovskiy, Bernd Koos, Sebastian Spintzyk, and Alexander B. Xepapadeas. 2021. "Accuracy Evaluation of Additively and Subtractively Fabricated Palatal Plate Orthodontic Appliances for Newborns and Infants–An In Vitro Study" Materials 14, no. 15: 4103. https://doi.org/10.3390/ma14154103

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