Comparison of wear and fracture resistance of additively and subtractively manufactured screw-retained, implant-supported crowns

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dc.contributor.authorDiken, Türksayar, A.A.
dc.contributor.authorDemirel, M.
dc.contributor.authorDonmez, M.B.
dc.contributor.authorOlcay, E.O.
dc.contributor.authorEyüboğlu, T.F.
dc.contributor.authorÖzcan, M.
dc.date.accessioned2024-05-19T14:34:31Z
dc.date.available2024-05-19T14:34:31Z
dc.date.issued2023
dc.departmentİstinye Üniversitesien_US
dc.description.abstractStatement of problem: Additively manufactured resins indicated for fixed definitive prostheses have been recently marketed. However, knowledge on their wear and fracture resistance when fabricated as screw-retained, implant-supported crowns and subjected to artificial aging is limited. Purpose: The purpose of this in vitro study was to evaluate the volume loss, maximum wear depth, and fracture resistance of screw-retained implant-supported crowns after thermomechanical aging when fabricated using additively and subtractively manufactured materials. Material and methods: Two additively manufactured composite resins (Crowntec [CT] and VarseoSmile Crown Plus [VS]) and 2 subtractively manufactured materials (1 reinforced composite resin, Brilliant Crios [BC] and 1 polymer-infiltrated ceramic network, Vita Enamic [EN]) were used to fabricate standardized screw-retained, implant-supported crowns. After fabrication, the crowns were cemented on titanium base abutments and then tightened to implants embedded in acrylic resin. A laser scanner with a triangular displacement sensor (LAS-20) was used to digitize the preaging state of the crowns. Then, all crowns were subjected to thermomechanical aging (1.2 million cycles under 50 N) and rescanned. A metrology-grade analysis software program (Geomagic Control X 2020.1) was used to superimpose postaging scans over preaging scans to calculate the volume loss (mm3) and maximum wear depth (mm). Finally, all crowns were subjected to a fracture resistance test. Fracture resistance and volume loss were evaluated by using 1-way analysis of variance and Tukey Honestly significant difference (HSD) tests, whereas the Kruskal-Wallis and Dunn tests were used to analyze maximum wear depth. Chi-square tests were used to evaluate the Weibull modulus and characteristic strength data (?=.05). Results: Material type affected the tested parameters (P<.001). CT and VS had higher volume loss and maximum wear depth than BC and EN (P<.001). EN had the highest fracture resistance among tested materials (P<.001), whereas BC had higher fracture resistance than CT (P=.011). The differences among tested materials were not significant when the Weibull modulus was considered (P=.199); however, VE had the highest characteristic strength (P<.001). Conclusions: Additively manufactured screw-retained, implant-supported crowns had higher volume loss and maximum wear depth. All materials had fracture resistance values higher than the previously reported masticatory forces of the premolar region; however, the higher characteristic strength of the subtractively manufactured polymer-infiltrated ceramic network may indicate its resistance to mechanical complications. © 2023 The Authorsen_US
dc.description.sponsorshipBiruni-BAP-2021-01-13en_US
dc.description.sponsorshipFunding: This study was funded by The Scientific Research Project Council of Biruni University , Turkey, Grant/Award Number: Biruni-BAP-2021-01-13 .en_US
dc.identifier.doi10.1016/j.prosdent.2023.06.017
dc.identifier.issn0022-3913
dc.identifier.scopus2-s2.0-85165326758en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.prosdent.2023.06.017
dc.identifier.urihttps://hdl.handle.net/20.500.12713/4504
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Inc.en_US
dc.relation.ispartofJournal of Prosthetic Dentistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.titleComparison of wear and fracture resistance of additively and subtractively manufactured screw-retained, implant-supported crownsen_US
dc.typeArticleen_US

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