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Mechanical Properties of 3D Printed Orthodontic Retainers

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dc.abstract.enOrthodontic retention is the final important stage of orthodontic treatment, the aim of which is to consolidate the functional and aesthetic position of teeth. Among adults, fixed retainers made of different types of wires are the most common. The aim of this study was to analyse the mechanical properties of a new generation of fixed orthodontic retainers—printed by 3D printers. Materials and Methods: The study was conducted using samples made of Nextdent MFH C&B N1 resin in the form of cuboid bars with nominal dimensions of width b = 3 mm, thickness d = 0.8 mm; 1 mm; 1.2 mm, length l = 30 mm for each type. The influence of the thickness of the retainers on their strength under loaded conditions was evaluated. Flexural strength, elastic properties, deflection, and creep were compared. The samples were aged in an artificial saliva bath at 37 ± 1 °C during the strength tests. Results: It was shown that differences in the thickness of the samples affected their elastic and strength properties. The highest average flexural modulus, the highest deflection, creep, and strength was characteristic of the samples with the highest thickness (1.2 mm). Samples with an average thickness of 1 mm had the lowest modulus of elasticity. Conclusions: The mechanical properties of 3D printed retainers show that they can be an alternative to metal retainers and the procedure of making new retainers, especially when patients have aesthetic requirements or allergies to metals.
dc.affiliationWydział Inżynierii Środowiska i Inżynierii Mechanicznej
dc.affiliation.instituteKatedra Inżynierii Biosystemów
dc.contributor.authorFirlej, Marcel
dc.contributor.authorZaborowicz, Katarzyna
dc.contributor.authorZaborowicz, Maciej
dc.contributor.authorFirlej, Ewa
dc.contributor.authorDomagała, Ivo
dc.contributor.authorPieniak, Daniel
dc.contributor.authorIgielska-Kalwat, Joanna
dc.contributor.authorDmowski, Artur
dc.contributor.authorBiedziak, Barbara
dc.date.access2026-02-24
dc.date.accessioned2026-03-05T21:08:49Z
dc.date.available2026-03-05T21:08:49Z
dc.date.copyright2022-05-09
dc.date.issued2022
dc.description.abstract<jats:p>Orthodontic retention is the final important stage of orthodontic treatment, the aim of which is to consolidate the functional and aesthetic position of teeth. Among adults, fixed retainers made of different types of wires are the most common. The aim of this study was to analyse the mechanical properties of a new generation of fixed orthodontic retainers—printed by 3D printers. Materials and Methods: The study was conducted using samples made of Nextdent MFH C&amp;B N1 resin in the form of cuboid bars with nominal dimensions of width b = 3 mm, thickness d = 0.8 mm; 1 mm; 1.2 mm, length l = 30 mm for each type. The influence of the thickness of the retainers on their strength under loaded conditions was evaluated. Flexural strength, elastic properties, deflection, and creep were compared. The samples were aged in an artificial saliva bath at 37 ± 1 °C during the strength tests. Results: It was shown that differences in the thickness of the samples affected their elastic and strength properties. The highest average flexural modulus, the highest deflection, creep, and strength was characteristic of the samples with the highest thickness (1.2 mm). Samples with an average thickness of 1 mm had the lowest modulus of elasticity. Conclusions: The mechanical properties of 3D printed retainers show that they can be an alternative to metal retainers and the procedure of making new retainers, especially when patients have aesthetic requirements or allergies to metals.</jats:p>
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.number9
dc.description.points140
dc.description.versionfinal_published
dc.description.volume19
dc.identifier.doi10.3390/ijerph19095775
dc.identifier.issn1660-4601
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/7637
dc.identifier.weblinkhttps://www.mdpi.com/1660-4601/19/9/5775
dc.languageen
dc.relation.ispartofInternational Journal of Environmental Research and Public Health
dc.relation.pagesart. 5775
dc.rightsCC-BY
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.endigital orthodontics
dc.subject.enlingual retainer
dc.subject.en3D printing in orthodontics
dc.subject.enCAD/CAM in orthodontics
dc.subject.enaligner
dc.titleMechanical Properties of 3D Printed Orthodontic Retainers
dc.title.volumeSpecial Issue Oral Cavity in Pediatric Population as Target for Interdisciplinary Treatment
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.issue9
oaire.citation.volume19